Bart Legum is a partner in the Paris office of Dentons and head of the firm’s investment treaty arbitration practice. Bart has over 30 years’ experience in litigating complex cases and has argued before numerous international arbitration tribunals, the International Court of Justice and a range of trial and appeals courts in the United States. His practice focuses on international arbitration and litigation in general, and arbitration under investment treaties in particular.

From 2000 to 2004, Bart served as chief of the NAFTA Arbitration Division in the Office of the Legal Adviser, United States Department of State. In that capacity, he acted as lead counsel for the United States government defending over US$2 billion in claims submitted to arbitration under the investment chapter of the North American Free Trade Agreement (NAFTA). The United States won every case decided under his tenure.

Bart is a past chair of the Section of International Law of the American Bar Association, an international bar organisation with over 24,000 members from over 90 countries around the world. In 2012–2013, he served as chair of the Section and chaired its Executive Committee, Council and Administration Committee.

In addition to being the editor of The Investment Treaty Arbitration Review, Bart is the editor of International Litigation Strategies and Practice (2nd ed. 2014; 1st ed. 2005), a book published by the American Bar Association. Bart publishes often on international dispute resolution topics and frequently speaks at conferences on international arbitration and litigation.