About Sean Lyons

Sean Lyons is an associate in White & Case’s tax controversy group, based in Washington, DC. Sean’s practice focuses on representing taxpayers in proceedings before the Internal Revenue Service (IRS), at both the examination and appeals levels. He has also represented taxpayers in both deficiency litigation before the US Tax Court and refund litigation in the US District Courts. Sean also routinely advises clients on international tax matters, with an emphasis on transfer pricing and tax treaty issues, including representing clients in negotiations between the IRS and foreign tax authorities for bilateral advance pricing agreements, and regarding requests for relief from double taxation pursuant to the mutual agreement procedures of bilateral income tax treaties.