Litigation 2026

Last Updated December 02, 2025

Norway

Law and Practice

Authors



Advokatfirmaet Simonsen Vogt Wiig is one of the largest law firms in Norway, with offices in the major cities in Norway and in Singapore. The firm’s 180 lawyers represent clients within all industries and sectors, across all legal functions and areas of expertise. Simonsen Vogt Wiig has a standalone litigation and arbitration team of lawyers, separate from the firm’s advisory departments, handling complex matters before the Norwegian and European courts, arbitration tribunals and a variety of boards, councils and committees. Its litigators dedicate 100% of their time to contentious matters, representing clients across all industry sectors. The firm has one of the largest disputes teams in Norway, which includes 11 lawyers who are admitted to the Supreme Court. In addition, the firm has 33 partners and 16 other qualified lawyers who regularly handle disputes before the courts.

Civil litigation in Norway is governed by the Dispute Act of 2005. The Norwegian legal system is based on a civil law tradition where the main sources of law are statutes and the official preparatory works to statutes. However, case law from the Norwegian Supreme Court is also an important source of law.

In general, civil proceedings are based on an adversarial model, although with some inquisitorial elements depending on the nature of the case.

The legal process is conducted through a combination of written submissions and oral arguments. During the preparation of the case, the parties submit one or several written pleadings to the court. The case is normally decided after a hearing where all the evidence is presented, both documentary evidence and witnesses. Civil cases may also be decided based on a combination of written submissions and oral arguments, or solely on written submissions, but this is less common.

Court Bodies

The Norwegian court system consists of the ordinary courts as well as some special courts and court-like bodies. The ordinary courts of Norway are of general jurisdiction and consist of three levels:

  • the district courts;
  • the courts of appeal; and
  • the Supreme Court.

Norway does not have its own administrative courts. Those affected by an administrative decision can bring the decision before the ordinary courts for a review of the decision’s validity. There are also no small claims courts in Norway. Cases regarding small claims are heard by the ordinary courts, but the procedure is slightly different, with the aim of reducing legal costs.

Some civil matters are reserved for special courts, including certain cases regarding property rights, which are heard by the land consolidation courts. Decisions from these courts can be appealed to the ordinary courts of appeal. Cases regarding collective labour agreements are heard by the Labour Court. With a few exceptions, these decisions cannot be appealed.

Court-like bodies include:

  • the National Insurance Court, which considers disputes over social security and pension; and
  • the Finnmark Land Tribunal, which considers disputes regarding the rights to land and water in the Finnmark Region of Norway.

Duration From Start of Proceedings to Trial

For cases before the district courts, the main hearing shall, as a rule, be scheduled within six months from the submission of the writ of summons. Extensions are permitted only under special circumstances. This guideline is similarly applied to the courts of appeal. Timeliness is a critical aspect of the Norwegian legal process, aimed at ensuring that decisions are both of high quality and delivered within a reasonable timeframe. At the Supreme Court level, the average duration from the filing of a civil case to the appeal hearing is approximately six to seven months. However, this can vary significantly based on the complexity and specific demands of the case.

As a main rule, civil court proceedings in Norway are open to the public. Cases under the Children’s Act and the Marriage Act and cases between spouses, cohabitants and divorced persons regarding the distribution of property are not open to the public, unless the court decides they should be, for special reasons. The same applies to matters concerning the review of coercive decisions in the health and social care sector. In addition to these exceptions, the court may decide that a hearing shall not be open to the public if this is required for the sake of privacy or proper case information, for example.

Court decisions in civil cases are available to the public. With a few exceptions, this is also true for final written submissions (the parties’ summary of the arguments), court hearing records, court mediation protocols and cost reports. Writs of summons, notices of defence and other written pleadings are not available to the public, but the parties may give access to the documents.

Only lawyers or authorised assistant lawyers may appear as legal representatives in Norwegian courts. A master’s degree in law is required in order to obtain a lawyer’s licence in Norway, in addition to having passed a mandatory course and having at least two years of relevant work experience involving civil court proceedings.

A foreign lawyer may act as counsel if the court finds no objections to this in view of the nature of the case and other circumstances.

Only lawyers who are entitled to appear before the Supreme Court can be engaged as counsel in cases that involve an oral hearing before the Supreme Court.

Litigation funding by a third party is not regulated by the Norwegian Dispute Act or other civil acts. It is permitted insofar as it does not violate any civil procedural provisions or principles. Third-party litigation funding is still in its infancy in Norway, but in recent years the concept has started moving towards becoming a more established dispute resolution tool.

In June 2023, the Norwegian Supreme Court issued a ruling that implies a limitation on third-party litigation funding (HR-2023-1034-A). The question was whether the provisions of the Dispute Act allow for third-party litigation funding in an opt-out class action lawsuit when the third party would have its costs and return covered through a reduction of the compensation awarded to the group members, if any. The Supreme Court concluded that the provisions of the Dispute Act do not allow for this and stated that it is a task for the legislature to assess whether changes should be made to the Dispute Act’s rules on class action lawsuits. The lawsuit was thus rejected.

In principle, all types of lawsuits are available for third-party funding. However, as described in 2.1 Third-Party Litigation Funding, the Norwegian Supreme Court’s decision in June 2023 (HR-2023-1034-A) implies a limitation on third-party funding in opt-out class action lawsuits.

Third-party funding is available for both the plaintiff and the defendant.

There is no maximum or minimum amount for third-party funding.

A third-party funder will normally fund the legal costs of the funded party (fees for counsel, costs of experts, court fees, etc). The agreement can also stipulate that the third party covers the legal costs incurred by the other party if the funded party is ordered to pay these.

The use of contingency fees is not regulated by the Dispute Act. However, the Norwegian Bar Association’s code of conduct states that a lawyer must not enter into an agreement with clients or others that he/she shall receive a fee on a percentage or share basis in relation to the result or object of the case, whether this concerns an amount of money or another form of remuneration. The provision does not prohibit “no cure no pay” agreements; it is only violated when a “no cure no pay” agreement is combined with a share-based fee.

There are no time limits by when a party to litigation should obtain third-party funding.

Before bringing an action, a party shall give notice in writing to the party against whom the action may be brought. The notice shall contain information about the claim and the grounds for the claim and shall invite the opposing party to respond to the claim and the grounds for the claim.

The party who receives notice of a claim shall respond to the claim and the grounds for the claim within a reasonable time. If the claim is contested in whole or in part, the party shall specify the grounds upon which it is contested. If the party is of the opinion that they have a claim against the party who has given notice of claim, they shall, at the same time, give notice of the claim and the grounds for it, and invite the opposing party to respond.

A person who gives notice of claim or who contests a notified claim is also obliged to provide information about important documents or other evidence of which they are aware and of which they cannot expect the opposite party to be aware. This applies irrespective of whether such evidence supports the party’s position or the position of the opposing party.

The parties shall investigate whether it is possible to reach an amicable settlement of the dispute before action is brought, and shall make a strong attempt at settlement, if necessary, through conciliation before a conciliation board, through non-judicial mediation or by bringing the dispute before a non-judicial dispute resolution board.

The steps described above are not procedural requirements, so the non-fulfilment of these obligations is not an obstacle to legal proceedings, although it may have an impact on the liability for legal costs.

Claims for money and other performances are subject to limitation periods in accordance with the provisions of the Act relating to the limitation period for claims.

The general limitation period is three years, but certain types of claims are subject to a shorter or longer limitation period: for instance, there is a longer limitation period for claims based on money loans. Special rules also apply to claims for damages that do not arise from a contract.

Generally, the limitation period runs from the date on which the creditor first has the right to demand performance. If the creditor has not asserted the claim because they lacked the necessary knowledge of the claim or the debtor, the period of limitation expires at the earliest one year after the date on which the creditor obtained or should have obtained such knowledge.

There are several ways in which the limitation period can be interrupted, such as when the debtor expressly, in word or deed, has acknowledged their debt to the creditor. Furthermore, and important practically, the limitation period is interrupted when the creditor submits a writ of summons.

Jurisdictional requirements are regulated by the Dispute Act and the Lugano Convention.

The Dispute Act states that the ordinary venue of natural persons is the place of their habitual residence. Undertakings have their ordinary venue at the place where the head office of the undertaking is located, according to registration. Foreign business undertakings that have a branch, agency or similar place of business in Norway have an ordinary venue at this place of business if the action relates to activities at that location.

The Dispute Act states that disputes in international matters may only be brought before the Norwegian courts if the facts of the case have a sufficiently strong connection to Norway. For instance, if a person or legal entity is not domiciled in Norway, a Norwegian court may still seize jurisdiction if the dispute concerns real property located in Norway. If the dispute falls within the scope of the Lugano Convention, the question of jurisdiction and legal venue is determined by the convention’s provisions as lex specialis.

Norwegian courts will also accept jurisdiction of a case if the jurisdiction of the Norwegian court has been agreed by the parties. An agreement that broadens or limits the international jurisdiction of the Norwegian courts must be in writing. Any agreements on venues that fall within the scope of the Lugano Convention must be assessed according to Article 23 thereof.

A lawsuit is initiated by a writ of summons. This can be submitted both in writing and orally, although the latter is uncommon.

The writ of summons shall state:

  • the name of the court;
  • the names and addresses of the parties, their party representatives and their counsel;
  • the claim that is being asserted and a prayer for relief, which states the outcome the claimant is requesting by way of judgment;
  • the factual and legal grounds upon which the claim is based;
  • the evidence that will be presented;
  • the basis upon which the court has jurisdiction to hear the case if this may be doubtful; and
  • the claimant’s view on the further proceedings of the case, including any agreements that may be of relevance to the proceedings.

The writ of summons shall provide a basis for the parties and the court to hear the case in a sound manner. Claims, prayers for relief and the factual and legal grounds shall be stated in such a manner as to enable the defendant to consider the claims and prepare the case. The claimant’s argumentation shall not go further than necessary to satisfy these requirements. Furthermore, the writ of summons shall give the court a basis for assessing its jurisdiction and shall provide the necessary information to enable the writ of summons to be served and to contact the parties.

Some cases must be heard by a conciliation board before being brought to the ordinary courts. The requirements for an initial complaint to a conciliation board are almost identical to those described above. However, it is not uncommon for the complaint to be somewhat simpler and shorter than a writ of summons.

It is the responsibility of the court to serve the defendant with the writ of summons. This can be carried out in several ways. If the defendant is represented by a lawyer, the documents are usually served by means of electronic communication. The lawyer who receives the service must confirm receipt on behalf of their client as soon as possible, and at the latest within the deadline specified in the transmission. Service can also be done by ordinary post, either by regular letter with acknowledgement of receipt or by registered letter. Furthermore, if service as described above is not successful, the court may seek to serve the defendant through other means, such as a process server.

If the respondent is domiciled outside Norway, the manner of service will be governed by applicable international treaties. The most important convention is the Convention of 15 November 1965 on the Service Abroad of Judicial and Extrajudicial Documents in Civil or Commercial Matters (the Hague Convention 1965). Within the Nordic region, the agreement of 26 April 1974 between Norway, Denmark, Finland, Iceland and Sweden applies. The agreement simplifies the procedure for sending letters of requests and contains rules on which languages can be used.

When a defendant is served the writ of summons, they are also ordered to submit their answer or statement of defence within a certain deadline.

A party shall be deemed to be unlawfully absent if they do not submit a response to the lawsuit within the deadline. The defendant may, by way of reinstatement, be permitted by the court to take the necessary procedural action and continue the action in the same position as before the omission.

The court shall reject the case if the claimant is unlawfully absent because they have not responded to the lawsuit, and the court does not grant reinstatement. It is a prerequisite for rejection that the defendant has been informed of the consequences.

The Norwegian legal system allows for class actions, both opt-in and opt-out.

A class action can only be brought if:

  • several legal persons have claims or obligations for which the factual or legal basis is identical or substantially similar;
  • the claims can be heard by a court with the same composition and principally in accordance with the same procedural rules;
  • class procedure is the most appropriate method of hearing the claims; and
  • it is possible to nominate a class representative.

Only persons who could have brought or joined an ordinary action before the Norwegian courts may be class members.

A class action may be brought by any person who fulfils the conditions for class membership if approval to bring the action is granted. Furthermore, a class action may be brought by organisations and associations, and by public bodies charged with promoting a specific interest, provided that the action falls within its purpose and normal scope.

The court shall decide whether to approve or reject the class action, as soon as possible. If the class action is approved, various practical and financial conditions must be described in the court’s decision. Furthermore, the court shall ensure that the class action is made known to those who may join it.

Normally, the class action only includes those who are registered as class members. Persons who have claims that fall within the scope of the class action can register as class members (opt-in).

However, the Dispute Act also allows for class actions that do not require the registration of class members (opt-out). This is only possible if the claims:

  • individually involve amounts or interests that are so small that it must be assumed that a considerable majority of them would not be brought as individual actions; and
  • are not deemed to raise issues that need to be heard individually.

Persons who do not wish to participate in the class action may withdraw.

There is no general obligation to provide clients with a cost estimate of the potential litigation at the outset. However, according to the Norwegian Bar Association’s code of conduct, the client is entitled to be informed of how the lawyer has calculated their fee, and the fee must be in reasonable proportion to the assignment and the work carried out by the lawyer.

Furthermore, if the lawyer assumes that the costs will be disproportionately high in relation to the client’s financial position or the interests to which the case relates, the lawyer must make the client aware of this in time.

In practice, of course, fee estimates and budgets are common.        

As legal proceedings take time, there is a risk that the defendant, in the meantime, will dispose of the subject matter of the case, and thus make it impossible or substantially more difficult to enforce the claim. There may also be a need to obtain a temporary arrangement between the parties during the dispute. To accommodate the claimant’s need to ensure future enforcement or a temporary arrangement, the Norwegian legislation gives access to strike preliminary decisions before trial.

Pecuniary claims can be secured by a garnishee order/an arrest, while other claims may be secured by temporary precautionary measures. Upon a garnishee order, the debtor loses the right to dispose of the arrested assets to the disadvantage of the claimant. With a temporary injunction, the defendant shall usually omit, undertake or tolerate an act.

Before trial, a party can apply for early judgment for proven claims if there are grounds for provisional security, and if the damage or inconvenience caused to the defendant is not clearly disproportionate to the interest the plaintiff has in an injunction being decided.

When a district court has to decide on an application for provisional security, an oral hearing is normally held.

At the same time as the court tries the application for provisional security, it can also hear the main claim if one of the parties demands it. A party can involve the main/primary claim for simultaneous adjudication if it is justifiable without further case preparation and will not delay the decision on the claim sought to be secured through a preliminary decision. This can happen without mediation by a conciliation board and will thus result in a quick court procedure. However, the court is quite free to refuse such simultaneous adjudication.

The procedural legislation sets out several conditions for the courts to be able to take a case into substantive discussion. These conditions are usually called procedural requirements/dispositive motions. If a procedural requirement is missing, the case must be dismissed.

The procedural requirements can be divided into general and special procedural conditions. “General” procedural requirements apply to all lawsuits that are not specifically excepted, while “special” procedural requirements only apply in specified case types or only between certain parties.

The general procedural requirements are as follows:

  • Both parties must have capacity to sue and be sued, and have procedural capacity.
  • The case must fall under Norwegian judicial competence and be brought before a court that has substantive, territorial and functional competence.
  • Unless otherwise provided by statute, the subject of the lawsuit must be a legal claim, and the parties’ connection to this and the relationship between the parties must be such that the plaintiff has a genuine need to obtain a judgment against the defendant (“legal interest”).
  • The legal claim that constitutes the subject matter in dispute cannot already be settled by a final and enforceable judgment, nor can another case about the same legal claim be pending before the courts (litis pendens).
  • Anyone who has filed a lawsuit or declared a legal remedy must attend the court hearings specified; the case shall be rejected if the complainant fails to attend and there are no grounds to believe that they are lawfully absent.
  • There are also requirements regarding the content and form of complaints to the conciliation board, the writ of summons and legal remedy declarations.

Examples of special procedural requirements include time limits for lawsuits and foreign plaintiffs’ duty to provide security for liability for legal costs.

Interested parties may join a lawsuit through the rules of third-party intervention, in a support action for a party in the case. The third party cannot put forward any independent claim but can provide evidence and argue in favour of the party they support.

Third-party intervention shall be permitted by a person who, by virtue of their own legal status, has a real interest in one of the parties succeeding with its actions, and by associations, foundations and public bodies charged with promoting specific interests in cases that fall within the purpose and normal scope of such organisations.

Furthermore, third-party intervention shall be declared in pleadings or at a court hearing before the case as such is ruled on. The declaration shall state the grounds for the intervention and shall be notified to the parties together with a time limit for contesting the intervention. If the intervention is contested, the issue of the right to intervene shall be determined by interlocutory order.

Interested parties that are not a plaintiff or defendant, or that can join the lawsuit through third-party intervention, can give written submissions.

The defendant may demand that a claimant who is not habitually resident in Norway provide security for their potential liability for costs that may incur during the proceedings before the current court. There are several exceptions to this rule.

If security is ordered by the court but not provided within the prescribed time limit set by the court, the case shall be rejected.

For cases of provisional security, the legal cost rules set out in Chapter 20 of the Dispute Act apply as a starting point for liability for legal costs (Section 32-2 of the Dispute Act, first sentence). However, there are some peculiarities for two more special situations. In Section 32-10 of the Dispute Act, first sentence, it is specified that the court can also impose liability for legal costs in cases that are decided without an oral hearing. Furthermore, if costs are imposed on the defendant in a case concerning arrest, such costs shall be included in the amount in respect of which arrest is taken. In both cases, it is a prerequisite that legal costs have been claimed.

The timeframe for a court to deal with an application varies depending on the judicial authority and the form of procedure the case will follow.

For proceedings before a conciliation board, the conciliation board will serve the complaint to the defendant if it proceeds with the case, together with an order to file a reply within a time limit, which shall normally be fixed at two weeks. After the reply is submitted, the preparation of the case is finished, and the conciliation board shall summon the parties to a meeting to hear the case. The meeting should take place within three months after the complaint is submitted.

For proceedings in the court of first instance, the court will set a time limit for the defendant to submit the reply to the writ of summons (both after the general procedure and after the small claim procedure), which is normally three weeks (Section 9-3 of the Dispute Act, first paragraph, second sentence), unless the court decides that the reply shall be submitted at a court hearing during the preparatory stage (Section 9-5 of the Dispute Act). Immediately after the reply has been submitted, the court continues the preparation of the case.

Discovery in the traditional Anglo-American sense is not available in civil cases in Norway.

The general rule is that the parties are obliged to produce the evidence requested, provided that the demand is sufficiently specified. There are several exceptions to this rule, and there is also a general requirement of proportionality between the evidence requested and the importance of the dispute. The right to demand evidence is consequently somewhat different and more limited than “discovery” in the traditional sense.

Regarding witnesses, the general rule is that anyone who has something to explain of importance to the case is obliged to give a witness testimony, provided it is likely that the person has something relevant to explain. If this requirement is met, the person can be ordered to give a witness testimony. There are exceptions to this rule.

Claims for access to evidence are normally submitted in a pleading. The opposing party will then produce the evidence if they agree that the claim is in accordance with the rules. If the parties disagree on whether there is an obligation to present evidence, the court must decide.

As discovery in the traditional Anglo-American sense is not available in civil cases, it is also not possible to obtain discovery from a third party that is not named as claimant or defendant. However, a third party has a similar obligation as the parties to produce evidence that may constitute evidence in the case.

The obligation for third parties is normally enforceable for the party that has demanded the evidence to be produced.

The general approach to discovery in Norway is that there should be a broad right to require the opposing party to produce evidence that could be of importance to the case. However, there is also a general view that this must be proportional and balanced against other considerations. This is a part of the rationale for why traditional “discovery” is not permitted under Norwegian law.

The rules are generally not very detailed. For example, there are no rules requiring the parties to disclose specific documents. In principle, all requests to produce evidence shall be complied with, unless the demand is covered by exceptions.

The legal system in Norway does not provide for discovery in the traditional Anglo-American sense, but does provide for other discovery mechanisms. These mechanisms (described in more detail elsewhere in this chapter) are sufficient to obtain evidence that is of importance to the case.

Norwegian law recognises the concept of legal privilege. This is one of the exceptions to the general obligation to provide evidence that is relevant to the case. The courts are not allowed to receive evidence from lawyers regarding anything entrusted to them in their position as counsel. An exception to the general rule is made if the person entitled to confidentiality consents to the sharing of evidence covered by attorney-client privilege.

The ban applies to both in-house and external lawyers. The decisive factor for the scope of the provision is whether the lawyer performs work for a client or for a company in which they are employed, and the employment is of such a nature that it must be regarded as legal practice.

In addition to the rule that evidence covered by attorney-client privilege does not need to be shared, there are also other rules that allow a party to not disclose a document. The rules apply to the following evidence/information:

  • information of importance to the security of the kingdom or relations with foreign states;
  • discussions in government conferences;
  • information that is subject to statutory confidentiality;
  • information that is subject to a statutory duty of confidentiality for guardians;
  • court proceedings and court decisions;
  • evidence related to trust in special professionals;
  • evidence about reputation and credibility;
  • evidence obtained improperly;
  • exemptions for close relatives for information provided by the party;
  • incriminating personal data;
  • evidence concerning trade secrets; and
  • mass media (source protection).

In addition to this, the rule on proportionality between the significance of the dispute and the evidence can also allow a party to not disclose evidence.

Temporary injunctive relief may be awarded when a decision is urgent. There must be circumstances which indicate that there is a need for a temporary decision before the trial can be held, typically because something may occur in the meantime that cannot be reversed later. The injunctions available can:

  • require the defendant to refrain from an act;
  • require the defendant to perform or tolerate an act; or
  • require an asset to be removed from the defendant’s possession and taken into custody.

Injunctive relief can be obtained quickly if the circumstances are urgent; how long it takes depends on the urgency of the need for the injunction.

Normally, if the respondent is to be notified and given the opportunity to be present, it will take a couple of weeks from the time the application for an injunction is delivered to the court. In any case, it is a clear prerequisite that the decision must be made quickly.

Injunctive relief can be obtained without notice to the respondent and without the respondent being present. The main rule is nevertheless the opposite: the parties should be given the opportunity to present their opinion on the matter before the court makes a decision on whether to award injunctive relief.

There is only access to obtain the injunctive relief without notice to the respondent and without the respondent present where there is “danger” in waiting. If this criterion is met, the court can award injunctive relief ex parte. In general, this condition will be met where there is a risk that the main claim otherwise cannot be secured.

The applicant can be held liable for damages suffered by the respondent if the respondent later successfully discharges the injunction. There is a fairly strict objective liability for damages in cases where the injunction is revoked or lapses, and it turns out that the plaintiff’s claim (the main claim) did not exist when the injunction was decided.

The applicant can be required to provide security for potential damages. The court decides whether the applicant is required to provide security. In situations where the injunction is obtained on an ex parte basis, this will be relevant to include in the assessment of whether security should be required. If it has been decided that security must be provided, the injunction does not come into force before the security has been set.

Injunctive relief cannot be granted against worldwide assets of the respondent.

Injunctive relief can be obtained against third parties in the sense that third parties may be affected by the injunction. In such cases, the third party has the right to intervene in the case.

The consequence of a respondent failing to comply with the terms of an injunction is that the injunction can be enforced in accordance with the Enforcement Act. This may involve the implementation of measures to ensure that the respondent complies with the injunction.

In Norway, civil trials are primarily, and as a main rule, conducted through oral proceedings.

As a general rule for regular proceedings, the court rules on the subject matter of the action following oral proceedings at a main hearing. Oral hearing is also the main rule for the small claim procedure and in the case of appeals.

The procedure involves oral arguments and can also involve witness/expert examination at hearings.

However, the Disputes Act also provides for written proceedings for certain matters (such as rulings on procedural issues, including whether the case shall be rejected or dismissed, appeals against interlocutory orders and decisions), and when written treatment is viewed to be most effective when combined with active case management. The Dispute Act also provides for the use of written material in oral negotiations, such as written statements from parties and witnesses.

Arrest

If the claimant is ordered to provide security, the arrest shall be executed as soon as the court receives notification that security has been provided. Execution includes deciding which asset shall be arrested if this has not already been decided, establishing legal protection for the arrest and notifying the parties of the result of the execution. The court may, in whole or in part, assign execution of the arrest to the enforcement officer in any judicial district. If the court assigns the enforcement officer the task of deciding which asset shall be arrested, it can decide which asset the enforcement officer should preferably seek.

Interim Measure

The execution of an interim measure shall only take place if (and then as soon as) the claimant requests it.

Small Claim Procedure

In relation to the small claim procedure, the hearing is conducted orally and can be held in the form of a distance meeting. The hearing shall not exceed one day, unless there are particularly strong reasons that warrant a longer hearing.

Case Management Hearings Before More Complex Trials

For regular proceedings, the courts prepare a plan for the proceedings, setting time limits and making necessary decisions, including whether the proceedings in the case should be split.

Jury trials are not available in civil cases in Norway.

The following categories of evidence are explicitly mentioned in the Dispute Act:

  • party statements (Chapter 23);
  • witness testimony (Chapter 24);
  • expert evidence (Chapter 25); and
  • real evidence (Chapter 26).

Most evidence can be placed in one of these categories. However, this enumeration of evidence in the Dispute Act is not exhaustive.

There are certain circumstances in which evidence is prohibited. In other cases, the person who is asked to give an explanation or provide evidence may refuse or be exempted from doing so. After a concrete assessment, evidence can also be withheld for other reasons. This applies, among other things, if the evidence is irrelevant, was acquired illegally, or is offered too late.       

Expert testimony is permitted at trial. The parties can introduce expert testimony, and the court itself can seek expert testimony.

Court hearings are normally open to the public. Exceptions from the main rule apply, inter alia, when consideration of the state’s relation to a foreign power requires it, for proceedings before a conciliation board, in cases concerning a duty of confidentiality and in cases concerning administrative decisions on coercive measures in the health and social services.

The judge has a duty to manage the case and the hearing. How detailed the control should be is up to the court. As the practical conditions for the execution of the main hearing will often be established in advance and discussed with the parties, it will normally be sufficient for the judge to ensure that the plan has been followed and otherwise clarify that everything is in place for a concentrated hearing.

The court shall ensure that the main hearing proceeds in a focused and proper manner without unnecessary delays. Proceedings on issues that are irrelevant to the case shall be denied, as will unnecessary repetition and unnecessarily broad proceedings.

For regular proceedings, the main rule is that the judge, after the main hearing, closes the case for judgment. The ruling shall be pronounced within four weeks after the main hearing or appeal hearing has been concluded. If the case is heard by a single judge, the time limit is two weeks. If the case is so demanding that it is not possible to meet this time limit, the ruling may be pronounced later. The ruling shall state the reason for any delay in pronouncement.

In cases that are tried after the small claims procedure and heard orally, judgment shall be rendered at the end of the court hearing if the judge finds reason to do so. Otherwise, judgment shall be rendered within one week after the parties have been informed that the case is closed for judgment.

The general timeframes for proceedings from commencement of claim through to trial vary depending on the legal institution and procedural form.

For proceedings before a conciliation board, the meeting to hear the case should take place within three months after the complaint is submitted.

For regular proceedings in the first instance, the main hearing shall be scheduled no more than six months after the date of submission of the writ of summons, unless special circumstances dictate otherwise. The same applies to appeals. Oral appeal hearings before a court of appeal and the Supreme Court must normally take place within six months after the appeal has been submitted to the court.

According to the Dispute Act, the case shall normally be concluded by judgment within seven months after the submission of the writ of summons.

For cases tried under the rules for small claims procedures, the timeframe for the hearing will normally be half a day and the case shall normally be concluded by judgment within three months after the writ of summons was submitted.

As a main rule, court approval is not required to settle a lawsuit in Norwegian civil cases, as most cases can be settled through an out-of-court settlement. However, the parties may conclude the settlement as an in-court settlement if they agree on this. The settlement will then be signed by the members of the court and entered in the court register, but the court will not carry out comprehensive control over the content of the settlement.

The parties’ right of disposition is limited in certain cases, including matters of personal status and legal capacity, matters regarding the legal status of children and administrative decisions on coercive measures. If such a case is brought before the court, the court has an independent responsibility for the outcome of the case, so a settlement between the parties must be approved by the court. Furthermore, certain cases cannot be settled under any circumstances if they are brought before the court, including child welfare cases.

Civil cases can be settled through an out-of-court settlement or through an in-court settlement. If the settlement is made out of court, it will remain confidential if the parties agree to a confidentiality undertaking. If the parties choose an in-court settlement, the settlement is entered in the court register. Thus, as a main rule, the settlement is public.

An in-court settlement can be enforced if the other party does not fulfil its obligations within the deadline, in the same way as a judgment. On the other hand, an out-of-court settlement is regarded as an ordinary agreement between the parties and is thus not enforceable without further procedural steps.

In-court settlements may be declared invalid or amended by judgment pursuant to the rules for the invalidity and amendment of contracts.

An out-of-court settlement agreement is binding on the parties in the same way as any other agreement. Whether or not an out-of-court settlement agreement can be set aside is a contractual issue and is not subject to procedural rules.

A court decision can be declaratory (for example, “A is the owner of X”) or executory (for example, “A must pay Y to B”). Executory judgments can be for specific performance, damages or injunctions. One of the most common forms of award to a successful litigant is monetary damages. A successful litigant will normally also be entitled to compensation for their costs incurred in relation to the trial.

Other remedies include temporary injunctive relief/interim measures.

Damages are awarded on a compensatory basis – ie, only damages actually suffered are eligible for compensation, apart from some exceptions related to personal injury. Punitive damages in the traditional Anglo-American sense are not awarded under Norwegian law. The court can reduce the liability if it considers it to be unreasonably burdensome for the liable party.

Interest can be claimed under the Default Interest Act from the date payment was due, or within 30 days after the creditor has sent a claim for payment if no due date was agreed. The default interest rate is set biannually to a fixed percentage annual interest rate. Default interest cannot be claimed if the delay is caused by circumstances on the part of the creditor.

Enforcement can be initiated by filing a request for enforcement with the Norwegian enforcement authorities. The most common form of enforcement is the collection of monetary claims. For claims that are secured by a lien, collection normally takes place through forced sale. For monetary claims that are not secured by a lien, the creditor must request a distraint procedure for the distraint of an asset belonging to the debtor. The lien obtained through this procedure then provides a basis for a forced sale. Other mechanisms for enforcement include attachment of earnings and bankruptcy proceedings.

The enforcement of claims other than monetary claims can take place through the direct exercise of power by the enforcement authorities. The enforcement authorities can also impose a current fine until the defendant fulfils their obligation.

The enforcement of foreign judgments in Norway is primarily governed by two legislative provisions: the Enforcement Act and the Dispute Act.

Under these laws, foreign judgments do not have automatic legal effect in Norway and cannot be enforced until they have been declared enforceable. The enforcement of foreign judgments in Norway requires legal authority either by statute or by treaty. The specifics are provided under Section 19-16 of the Dispute Act for legal effect and under Section 4-1 (2) (f) of the Enforcement Act for enforceability.

For judgments from a country within the European Economic Area (EEA) or European Union (EU), the Lugano Convention 2007 is applicable. Norway is a party to this convention, which authorises the recognition and enforcement of judgments made by a court in a Lugano country. The convention mandates that judgments rendered by courts in a convention country should be recognised without any special procedure (Article 33 (1)). A judgment that is enforceable in a convention state should also be enforced in another convention state when it has been declared enforceable in that state upon request from a party with a legal interest (Article 38).

There are a number of exceptions and grounds on which a foreign decision may not be recognised or enforced, such as:

  • public policy reasons;
  • if the decision was given in default of appearance; or
  • if the decision is incompatible with a judgment given in a dispute between the same parties in Norway.

In Norway, there are mainly three instances for court proceedings:

  • the first instance, consisting of the district courts;
  • the second instance, consisting of six courts of appeal; and
  • the Supreme Court.

Decisions handed down by district courts can be appealed to one of the six courts of appeal. Decisions from the courts of appeal can be appealed to the Supreme Court. In exceptional cases, an appeal of a decision from a district court can be made directly to the Supreme Court.

The court to which the case is appealed decides whether the appeal should be granted. Appeals to the Supreme Court are determined by the Appeals Committee of the Supreme Court.

The main rule is that any decision can be appealed to a court of appeal by the parties. A decision can be appealed on the basis of errors in the assessment of the facts, the application of the law or the procedure on which the decision is based.

An appeal to a court of appeal can be denied if the court of appeal finds that there is a clear preponderance of probability that the appeal will not succeed (Section 29-13 of the Dispute Act).

Appeals to the Supreme Court can only be granted if the appeal concerns issues that are of significance beyond the scope of the case at hand or if it is important for other reasons that the case is decided by the Supreme Court.

Appeals can be submitted through a notice of appeal to the court that handed down the decision being appealed. The main rule is that notices of appeal must be in writing. The appeal must normally be submitted within one month after the parties are served the original decision.

The appellant court can allow appeals of an entire decision, or only parts of it. The main rule is that the appellant court in a civil case can review and reconsider all aspects of the case that the appeal concerns. The appeal can normally only concern claims that have been decided on in the lower court. If new claims are linked to the claims already decided on and can be processed under substantially the same procedural rules, exceptions can be made, inter alia, if the new claims cannot be tried in a separate case, if the change of claims is related to circumstances that occurred or became known so late that the claim could not have been brought into the case earlier or if the other party does not object to the inclusion of the claims. For appeals to the Supreme Court, new claims can only be included if special reasons justify such inclusion.

The court cannot impose any conditions on granting an appeal.

The appeal is dismissed if it fails. If the appeal concerns procedure and succeeds in this respect, the appealed decision shall be set aside, and a court of appeal may decide that the further hearing of the case after the appealed ruling is set aside shall take place before a different court.

If the appeal concerns the content of the decision and succeeds, the appellant court shall make a new decision on the merits of the case, if it has sufficient grounds for doing so. Appealed decisions that are set aside are usually referred to the lower court that made the decision for rehearing.

The parties are responsible for paying their own expenses in relation to the court case, including attorney’s fees, unless otherwise agreed or specified by law. Court fees are normally borne by the party who has requested/initiated the court case – ie, the plaintiff. The winning party in a court case is entitled to full compensation for their legal costs from the losing party. The Dispute Act also allows for the full or partial award of legal costs to a party who has prevailed on material points of the case without winning the case in its entirety.

A party can recover all costs that were necessary, considering the significance of the case. A court of appeal can review decisions on the award of costs made by lower courts, both through an appeal of the case as such and by appeal specifically over the decision on costs.

When awarding costs, the courts mainly assess whether and to what extent a party has won the case. The courts can also partially or in full exempt a party from liability for the other party’s legal costs based on a fairness assessment, considering, inter alia, whether there was good reason to have the case tried, whether the winning party can be blamed for bringing the case to trial and/or whether the balance of power between the parties warrants an exemption.

An award of costs usually falls due two weeks from the service of the judgment. If a party fails to reimburse the other party within that time, default interest can be awarded, which is set biannually to a fixed percentage annual interest rate.

The majority of civil disputes in Norway are settled through alternative dispute resolution, and dispute legislation has increased the focus on alternatives to traditional court proceedings. The most common method for resolving a dispute out of court is through a settlement between the parties.

The Dispute Act establishes an obligation for the parties to try to resolve the dispute amicably before filing a lawsuit, and court mediation is a standard mechanism at all district courts and courts of appeal. The prevailing party in a court case is normally entitled to full compensation of their costs. However, if the prevailing party has previously rejected a reasonable settlement offer from the other party, this can form the basis for exempting the losing party from liability for the prevailing party’s costs.

ADR offered through the judicial system is well organised. There are also several well-organised private organisations that offer ADR, such as mediation and arbitration, including the Bar Association, the Oslo Chamber of Commerce and the Nordic Offshore and Maritime Arbitration Association.

Arbitration that takes place in Norway is governed by the Arbitration Act, which is based on the UNCITRAL Model Law on International Commercial Arbitration. The enforcement of arbitral awards is regulated in the Arbitration Act and the Enforcement Act.

Disputes in legal matters over which the parties do not have an unrestricted right of disposition cannot be determined by arbitration. The point of departure for assessing whether a claim is subject to unrestricted disposal by the parties is whether the parties can enter into an agreement regarding the claim outside of court proceedings. Divorce is an example of a legal matter over which the parties have restricted disposal – the parties cannot agree extrajudicially to be divorced, which must be determined by a court. Consequently, divorce cannot be referred to and decided through arbitration.

Furthermore, an arbitration agreement will not be binding on a consumer if it was entered into before the dispute arose.

Arbitral awards are binding on the parties and can only be set aside under exceptional circumstances. An arbitral award can be set aside if:

  • the dispute is not capable of settlement by arbitration under Norwegian law;
  • the award is contrary to public policy (ordre public);
  • one of the parties to the arbitration agreement lacked legal capacity;
  • the arbitration agreement is invalid under the law to which the parties have agreed to subject it;
  • the party bringing the action to set aside was not given proper notice of the appointment of an arbitrator or of the arbitral proceedings, or was not given an opportunity to present their views on the case;
  • the award falls outside the jurisdiction of the arbitral tribunal;
  • the composition of the arbitral tribunal was incorrect; or
  • the arbitral procedure was contrary to law or the agreement of the parties, and it is likely that this has had an impact on the decision.

An arbitral award can be enforced in Norway, irrespective of the country in which it was made. The enforcement process can be initiated by submitting a request for enforcement to the Norwegian enforcement authorities. Recognition and enforcement of an award is dependent on a party providing the original award or a certified copy thereof. If the award is not made in Norwegian, Swedish, Danish or English, the party must also provide a certified translation thereof. Documentation may be required to show the existence of an agreement or other basis for arbitration.

As far as is known, there are no proposals for dispute resolution reform.

The largest areas of commercial disputes are generally construction law, property law, compensation and insurance law, and monetary claims.

Recently, there has been a noticeable increase in commercial disputes reaching the Supreme Court, compared to previous years. In 2023, the majority of civil cases that were granted leave to appeal concerned issues related to compensation, construction law, and real estate. There is also a consistent number of cases involving administrative law and civil procedure.

New legislation in key legal areas often triggers a temporary spike in the number of cases referred to the courts, which typically subsides after a period of adjustment.

In key sectors such as shipping, oil and gas, fisheries, aquaculture, industry, land-based power, and finance, the Supreme Court has very few or no cases. A main explanation for this is believed to be competition from arbitration.

Advokatfirmaet Simonsen Vogt Wiig

Filipstad brygge 1
P. O. Box 2043 Vika
N-0125 Oslo
Norway

+47 21 95 55 00

post.oslo@svw.no www.svw.no
Author Business Card

Trends and Developments


Authors



Advokatfirmaet Simonsen Vogt Wiig is one of the largest law firms in Norway, with offices in the major cities in Norway and in Singapore. The firm’s 180 lawyers represent clients within all industries and sectors, across all legal functions and areas of expertise. Simonsen Vogt Wiig has a standalone litigation and arbitration team of lawyers, separate from the firm’s advisory departments, handling complex matters before the Norwegian and European courts, arbitration tribunals and a variety of boards, councils and committees. Its litigators dedicate 100% of their time to contentious matters, representing clients across all industry sectors. The firm has one of the largest disputes teams in Norway, which includes 11 lawyers who are admitted to the Supreme Court. In addition, the firm has 33 partners and 16 other qualified lawyers who regularly handle disputes before the courts.

Introduction

The aim of this article is to introduce the reader to some significant legal trends and recent developments within dispute resolution and litigation in Norway.

Commercial Litigation

Court-ordered revisions of commercial contracts – a  new era of disclosure and loyalty?

Introduction

As in most jurisdictions, Norwegian law starts from the premise that agreements are binding.

The Norwegian Agreement Act includes a narrow exception from this principle in Section 36, which allows courts to set aside or amend agreements it would be unreasonable to invoke.

The general notion has for some time been that Section 36 of the Agreement Act has very limited application in the context of commercial contracts, as predictability is a particularly important consideration in business relations.

This view was, however, recently nuanced by the Supreme Court in a decision published as HR-2025-251-A Red Rock, where the Court unanimously concluded that a debt reduction agreement following a share purchase transaction had to be set aside as unreasonable.

Facts and issues

The case involved six founders of a marine technology company. In 2017, the parties agreed that two of the founders (the Buyers) would purchase the shares of the other four (the Sellers) for about NOK41 million, to facilitate a future sale of the company.

The Sellers agreed to lend the Buyers the purchase price, with repayment due in full in December 2021. The purchase price was based on a company valuation of NOK90 million.

In the spring of 2021, the Sellers agreed to reduce the purchase price of their shares by 70% to about NOK12.2 million.

The Buyers had led the Sellers to believe that the company value had fallen and that the reduction was necessary to secure a NOK50 million investment from a third-party investor and avoid bankruptcy.

However, the Buyers failed to inform the Sellers that the third-party investor had valued the company at NOK175 million. The Sellers therefore claimed that the debt reduction agreement was unreasonable and should be set aside under Section 36 of the Agreement Act.

Takeaways of general interest from the Court’s decision

As noted above, the Court found the debt reduction agreement unreasonable and made several important observations on how the revision rule in Section 36 of the Agreement Act should be applied to commercial contracts. Key takeaways include:

  • The high threshold for revising commercial contracts primarily applies in instances where the alleged unreasonableness is based on subsequently changed circumstances. If the revision claim rests on the other party’s failure to disclose information that is material to the agreement, the threshold may be lower.
  • In debt reduction negotiations, a debtor generally owes creditors a broad duty of disclosure. A close relationship between the parties also implies a heightened duty of loyalty, including an obligation to share relevant information.
  • The threshold for revising commercial contracts depends on both the parties’ level of professionality and their relative bargaining power. The fact that one of the parties, by virtue of its position, resources or expertise, was better placed to shape the terms to its own advantage may indicate that the contract is unreasonable and subject to revision.

The Court’s assessment of the case at hand

The Supreme Court held that the Buyers owed strict duties of loyalty and disclosure, given that they were (i) debtors negotiating a reduction of their indebtedness, (ii) former co-founders and business associates of the Sellers, and (iii) had undertaken to advance the interests of all founders.

Furthermore, the Supreme Court emphasised that the Sellers were not professional investors, whereas the Buyers were assisted by financial and legal advisers in the negotiations. The Sellers also had limited insight into the Buyers’ negotiations with the third-party investor. This created a striking imbalance between the parties in their ability to influence the terms of the debt reduction agreement.

Consequently, the Supreme Court concluded that invoking the debt reduction agreement would be unreasonable, and it set the agreement aside in full. The Sellers were therefore entitled to payment of the full purchase price of NOK41 million under the 2017 share purchase agreement.

The Impact of Red Rock

The Supreme Court’s judgment in Red Rock has already given rise to multiple claims by commercial parties seeking to set aside allegedly unreasonable obligations. Some have succeeded, particularly where the counterparty failed to disclose material information or breached duties of loyalty and disclosure.

As a result, Norwegian contract law may be moving towards higher standards of loyalty and disclosure for commercial parties.

National limitations on access to evidence containing trade secrets – compatible with EEA law and the fundamental right to a fair trial?

Introduction

Disclosure is important not only for commercial parties seeking to safeguard their contracts against court-ordered revision; it is also fundamental to the dispute resolution process itself and a prerequisite for a fair and sound adjudication of legal disputes.

Accordingly, under Section 21-4 of the Dispute Act, the default rule in Norwegian law is that the parties must give each other access to evidence. Section 22-10 provides an exception – particularly relevant to commercial parties – permitting a party to refuse disclosure if doing so would reveal trade secrets. Nevertheless, the court may order disclosure of the evidence if it considers this necessary.

In a decision dated 26 June 2025, published as HR-2025-1218-A and arising from a dispute between two companies over an alleged non-compete obligation, the Supreme Court was asked to clarify the interplay between Section 22 10 of the Dispute Act, on the one hand, and EEA law and the right to a fair trial under Article 6 of the European Convention on Human Rights (ECHR), on the other.

The issues

More specifically, the Supreme Court had to address two issues:

  • First, whether EEA law requires national courts to obtain and review evidence that may contain trade secrets, in order to assess whether it should be adduced in the proceedings.
  • Second, if Norwegian courts, due to EEA law and the right to a fair trial under the ECHR, are required to order the disclosure of evidence containing trade secrets unless confidentiality is strictly necessary.

Before deciding the case, the Supreme Court asked the EFTA Court for an advisory opinion on the EEA law questions.

Does EEA law require national courts to obtain and review contested evidence that may contain trade secrets?

As to the first issue, the Supreme Court noted that Section 26 7 of the Dispute Act authorises courts – but does not oblige them – to obtain evidence before ruling on its production.

The Court saw no basis in EEA law for a different interpretation. It emphasised that the EFTA Court, in its advisory opinion, stated that EEA law merely requires that national courts have discretion to obtain the evidence in question where necessary to make a sound assessment of whether to order disclosure.

Consequently, the decision reaffirms that courts may refuse a party’s application for disclosure on the ground that the evidence contains trade secrets, without first obtaining and reviewing the material in question.

May Norwegian courts only deny access to evidence containing trade secrets when strictly necessary?

As to the second question, the Supreme Court pointed out that, under Section 22 10 of the Dispute Act, the default position is that a party may refuse to disclose evidence if doing so would reveal trade secrets. It emphasised that any court order granting access to such evidence must be necessary, well justified, and based on a balanced assessment weighing the interest in maintaining confidentiality against the need to clarify the case.

Next, the Supreme Court considered whether EEA law and Article 6 of the ECHR nonetheless require Norwegian courts to order disclosure of evidence containing trade secrets, unless confidentiality is strictly necessary. The Supreme Court answered the question in the negative.

Having considered the advisory opinion of the EFTA Court and several decisions from the European Court of Human Rights, the Supreme Court concluded that EEA law and the ECHR merely require that national courts are given the opportunity to strike a balanced weighing of the interest in elucidating the case on the one hand, and the need for confidentiality on the other. However, limitations on the right of access to evidence must not in any case conflict with the very essence of a fair trial, the Court noted.

The Supreme Court clarified that, within these general boundaries, states are free to shape their own rules on access to evidence. Section 22-10, the Court held, falls well within those limits. Accordingly, the decision implies that the Norwegian legislature enjoys a wide margin of appreciation in developing such rules.

Arbitrator impartiality: lawyers as arbitrators

Introduction

Arbitration is becoming an increasingly attractive alternative to ordinary court proceedings in Norway. As arbitration is used more widely, there is a corresponding need to clarify the rules that govern the arbitral procedure.

On 19 May 2025, the Supreme Court handed down decision HR-2025-921-A, providing new guidance on arbitrator impartiality.

Background and issues

A lawyer had been appointed as an arbitrator in a shareholder dispute. The question before the Supreme Court was whether the lawyer should have been disqualified from serving due to a lack of impartiality, as the prevailing party was a client of the law firm of which the lawyer was a partner.

Takeaways of general interest from the Court’s decision

The Court ultimately answered the question in the negative and made several important remarks on the interpretation of the Norwegian rules on arbitrator impartiality set out in Section 14 of the Arbitration Act. Some key takeaways include:

  • The impartiality requirement for arbitrators is largely aligned with that applicable to judges in the ordinary courts. Still, there may be differences, for example due to the distinctive features of the arbitral process.
  • International sources, such as the IBA Guidelines on Conflicts of Interest in International Arbitration, may be relevant when interpreting and applying the impartiality requirement in Section 14 of the Arbitration Act. This is especially the case when lawyers act as arbitrators.
  • Whether a lawyer should be disqualified from acting as an arbitrator due to a client relationship with a party must be decided by an overall assessment, taking into account the nature, scope, and duration of the client relationship. The assessment should also consider the lawyer’s personal involvement in the matter, their role in the firm, and the size of the firm.
  • As a starting point, a lawyer is disqualified from serving as an arbitrator where the lawyer’s firm has a significant ongoing matter for a party during the arbitration. This applies even if the work is handled by other lawyers in the firm. However, an overall assessment as described above may lead to a different conclusion.

Furthermore, the Supreme Court addressed the arbitrator’s duty of disclosure, set out in Section 14 of the Arbitration Act, and its impact on the impartiality assessment. The Court noted that:

  • Arbitrators have a broad duty of disclosure: they must inform the parties, normally in writing, of any circumstances that may give rise to doubts about their impartiality.
  • To fulfil this duty, the arbitrators themselves must ensure that the parties are informed. It is not sufficient for the information to reach the parties from other sources.
  • If the arbitrator has been appointed by the parties, the information must be sent to them directly. If the arbitrator has been appointed by the district court, it is sufficient to provide the information to the court. 
  • A failure by the arbitrator to comply with the duty of disclosure may indicate that the arbitrator does not meet the requirement of impartiality, in borderline cases.

The Court’s assessment of the case at hand

In this case, the Supreme Court found that the lawyer had failed to fulfil the duty of disclosure, as he informed neither the parties nor the appointing district court of his firm’s client relation with one of the parties.

The Supreme Court nevertheless considered the lawyer an impartial arbitrator. In particular, the Court emphasised the sporadic and limited nature of the client relationship, the lawyer’s lack of involvement in the matter and the considerable size of the firm he was affiliated with.

Recent Clarifications on Provisional Security

Interim measures in environmental disputes

Introduction

Climate change and global warming have long been widely discussed topics, mainly in political arenas. Over the past years, we have seen a development internationally which suggests that these concepts are no longer merely a matter of politics, but also of law. 

This notion recently got a stronger foundation, with the European Court of Human Rights in Strasbourg and the International Court of Justice in The Hague both ruling that states are obliged under international law to protect their citizens and the environment from man-made climate change.   

Similarly, there have been important legal developments on climate matters in Norway. In a recent decision of 11 April 2025, published as HR-2025-677-A, the Supreme Court was asked to clarify the courts’ authority to grant interim measures in instances where the claim is based on the argument that rules ensuring environmental considerations have been violated.

Background and issues

The case arose from a lawsuit brought by two environmental organisations against the Norwegian state. The organisations claimed that the authorities’ decision to approve a plan for the development and operation of three oil fields in the North Sea was invalid because the state had failed to assess the climate impacts of burning oil and gas from the fields. They also sought an interim measure to halt operations at the oil fields pending final judgment in the case.

The case reached the Court of Appeal, which rejected the plaintiffs’ application for an interim measure, holding that it was beyond the courts’ authority to grant such an order.

The question for the Supreme Court was whether the Court of Appeal had correctly interpreted the rules on interim measures in the climate-change context. As of 1 October 2025, the Court of Appeal is yet to decide the main issue of the case – ie, the validity of the authorities’ decision to approve the development plans for the oil fields.

Courts are authorised to order interim measures in environmental disputes

The Supreme Court made several remarks on the interpretation of the rules on interim measures, both in general and in the context of environmental disputes. Key points include:

  • Sections 34 1 and 34 2 of the Dispute Act authorise courts to grant interim measures where this is necessary and proportionate, and the claim is proven.
  • It is generally accepted that, where these conditions are met, courts may also safeguard public-law interests by granting interim measures in support of claims to invalidate decisions of public authorities. The same applies where the invalidation claim rests on alleged breaches of provisions designed to protect the environment.
  • Democracy considerations do not preclude courts from ordering interim measures in cases that raise climate or petroleum issues, as the Court of Appeal had assumed.

In other words, the Supreme Court held that the courts are authorised to grant interim measures in climate lawsuits, provided the conditions in Sections 34-1 and 34-2 of the Dispute Act are met. The Court of Appeal had therefore interpreted the Act incorrectly.

The Courts’ obligation to grant interim measures in environmental cases

Although the Supreme Court held that courts are, in principle, authorised to grant interim measures in environmental disputes where the conditions in the Dispute Act are met, it nevertheless emphasised that, as a general rule, the provision does not oblige courts to grant such relief.

However, the Court clarified that this does not apply if the claim in question is based on a breach of environmental impact assessment requirements based on EEA law. In such cases, courts have a duty to grant interim measures to ensure the effectiveness of EEA law, the Supreme Court held.

The decision suggests that Norwegian courts not only have jurisdiction to grant interim relief in cases alleging breaches of environmental protection rules, but may be obliged to do so where those rules are derived from EEA law.

Use of arrest to secure prospective legal costs

Introduction

That was not the Supreme Court’s only guidance on interim security over the past year. In HR 2025 495 U, a compensation dispute following the sale of a company, the Court considered whether a court may order the arrest (ie, conservatory attachment/freezing) of a defendant’s assets to secure a prospective costs award pending final judgment.

Background and issue

Under Section 20 2 of the Dispute Act, the successful party is ordinarily entitled to full recovery of its legal costs. However, the court may relieve the opposing party of liability where compelling grounds make that reasonable. The issue was whether the arrest provisions in Sections 32 1 and 33 3 authorise the court to order an arrest (conservatory attachment) to secure a prospective costs award.

The Court’s assessment and conclusion

As a preliminary point, the Supreme Court noted that, under Sections 32 1 and 33 3 of the Dispute Act, an arrest may be ordered only where the applicant establishes, on the balance of probabilities, that it has a monetary claim against the respondent.

Hence, to obtain arrest of the defendant’s assets as security for a prospective award of legal costs, the plaintiff must prove both that it has a monetary claim and that it ultimately will be entitled to full recovery of its costs, the Court observed.

Regarding the costs element, the Court noted that Section 20 2 of the Dispute Act allows courts to relieve a defendant from liability for legal costs where compelling grounds make this reasonable. Because that discretion is exercised only once the case has been decided, there is ordinarily no adequate basis at the arrest stage to conclude, on the balance of probabilities, that the plaintiff will be entitled to full recovery of costs.

Hence, the Court held that, prior to a judgment or order awarding costs, it is not possible to prove, on the balance of probabilities, an entitlement to recover legal costs. Accordingly, the Supreme Court concluded that such claims cannot be secured by arrest under Sections 32 1 and 33 3 of the Dispute Act.

One of the three judges dissented, concluding that courts must, in principle, be authorised to order arrest to secure a prospective award of legal costs.

Litigation and AI

Introduction

AI is here to stay in Norwegian litigation. It offers significant opportunities to streamline time-consuming tasks such as fact gathering, document review, and drafting pleadings. However, when it comes to legal research, AI’s limitations have become increasingly apparent.

Growing awareness of AI hallucinations in legal research

In recent years, there have been several reports of lawyers, and even judges, citing fictitious legal sources hallucinated by AI, particularly in the United States. More recently, a similar incident found its way to the Norwegian litigation community.

In April 2025, the Supreme Court received a submission that included non-existent statutory provisions and preparatory works hallucinated by AI. In response, the Court updated its litigation guide for lawyers, which now includes a new section on the use of AI tools in proceedings before the Supreme Court. The new Section provides that, inter alia, lawyers:

  • owe the same professional duties when using AI tools as they do otherwise;
  • are personally responsible for all information included in their submissions, including legal content; and
  • should use AI tools only in areas where they are sufficiently competent to verify that any AI-generated legal content is authentic and accurate.

On 5 September 2025, the Norwegian Bar Association also issued new guidelines on the use of AI. The guidelines emphasise that using AI in legal practice requires high standards of professional responsibility, quality assurance, information security, and regulatory compliance.  Further, the guidelines state that the responsible use of AI requires law firms to:

  • have clear policies and procedures for the use of AI;
  • ensure that employees receive necessary training and understand the risks associated with AI use;
  • conduct thorough assessments when procuring and deploying AI tools;
  • continuously monitor, evaluate, and improve their use of AI; and
  • ensure appropriate disclosure to clients, where relevant.

AI developers’ limited access to Norwegian legal sources

In Norway, the issue of AI hallucinations in legal research must be considered alongside another problem, namely AI developers’ limited access to Norwegian legal sources.

In Norway, legal sources are predominantly available via Lovdata, Norway’s primary legal database. With respect to AI, Lovdata’s terms of use prohibit using content from the database to train or develop AI models.

Consequently, AI developers have limited opportunities to train their models to identify, interpret, and accurately apply Norwegian legal sources. This may increase the risk of hallucinations and prevent AI tools from reaching their full potential in Norwegian litigation.

Advokatfirmaet Simonsen Vogt Wiig

Filipstad brygge 1
P. O. Box 2043 Vika
N-0125 Oslo
Norway

+47 21 95 55 00

post.oslo@svw.no www.svw.no
Author Business Card

Law and Practice

Authors



Advokatfirmaet Simonsen Vogt Wiig is one of the largest law firms in Norway, with offices in the major cities in Norway and in Singapore. The firm’s 180 lawyers represent clients within all industries and sectors, across all legal functions and areas of expertise. Simonsen Vogt Wiig has a standalone litigation and arbitration team of lawyers, separate from the firm’s advisory departments, handling complex matters before the Norwegian and European courts, arbitration tribunals and a variety of boards, councils and committees. Its litigators dedicate 100% of their time to contentious matters, representing clients across all industry sectors. The firm has one of the largest disputes teams in Norway, which includes 11 lawyers who are admitted to the Supreme Court. In addition, the firm has 33 partners and 16 other qualified lawyers who regularly handle disputes before the courts.

Trends and Developments

Authors



Advokatfirmaet Simonsen Vogt Wiig is one of the largest law firms in Norway, with offices in the major cities in Norway and in Singapore. The firm’s 180 lawyers represent clients within all industries and sectors, across all legal functions and areas of expertise. Simonsen Vogt Wiig has a standalone litigation and arbitration team of lawyers, separate from the firm’s advisory departments, handling complex matters before the Norwegian and European courts, arbitration tribunals and a variety of boards, councils and committees. Its litigators dedicate 100% of their time to contentious matters, representing clients across all industry sectors. The firm has one of the largest disputes teams in Norway, which includes 11 lawyers who are admitted to the Supreme Court. In addition, the firm has 33 partners and 16 other qualified lawyers who regularly handle disputes before the courts.

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