Patrick W. Pearsall is the chair of the firm's Public International Law Practice. He is recommended in the Legal 500 and in 2019 is ranked as the second "Most Highly Regarded" arbitration practitioner in the Americas out of several hundred listed in the peer and client reviewed Who’s Who Legal: Arbitration, where he is recognized as "an incredible advocate," "whose razor-sharp mind is unmatched" and who is a "leader in public international law and investment treaty arbitration." He has extensive experience representing parties in complex commercial arbitration and investment disputes. Mr. Pearsall served in the U.S. State Department from 2009-2017 and was the Chief of Investment Arbitration from 2015 onward. He has arbitrated claims involving billions of dollars on behalf of the United States, other sovereign states, and private investors in both commercial arbitration and investment arbitration. He is a trusted adviser to governments and private entities and is regularly called upon to provide strategic counsel before a dispute arises. In addition to his representations, he has advised on the revision of the International Court of Arbitration’s (ICC) rules and led the negotiations of several bilateral and multilateral treaties. Most recently, he advised on the negotiation of the investment provisions in the Trans-Pacific Partnership (TPP), the Transatlantic Trade & Investment Partnership, and the U.S.-China Bilateral Investment Treaty.
Mr. Pearsall has received several awards and has worked for the ICC and for the Hon. Sonia Sotomayor on the United States Court of Appeals. He is an adjunct professor at Georgetown University Law Center where he teaches courses on international courts and tribunals and investment arbitration. Prior to this appointment, he has taught at Columbia Law School, Harvard Law School and Yale Law School. Mr. Pearsall regularly publishes and speaks widely on commercial and investment arbitration.
Currently, Mr. Pearsall is an appointed member of the Hong Kong International Arbitration Centre’s List of Arbitrators.