About Sean Lyons

Sean Lyons is an associate in White & Case LLP’s tax controversy group. His practice focuses on representing taxpayers in proceedings before the Internal Revenue Service (IRS) at both the examination and appeals level, as well as in deficiency litigation before the US Tax Court and in refund litigation before the US district courts. Sean also routinely advises clients on international tax matters, with an emphasis on transfer pricing and tax treaty issues. He has represented multinational groups 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.