Pieter S. de Ganon

Pieter S. de Ganon

Senior Associate

Pieter de Ganon specializes in international dispute resolution. He has acted as counsel in commercial and investment arbitrations conducted under AAA-ICDR, ICC, ICSID, JAMS, JCAA, SCC, and UNCITRAL rules. He has represented clients in arbitration-related litigation, including applications for interim measures, jurisdictional challenges, and enforcement proceedings. And he has tried technology and IP disputes in arbitration, litigation, and international trade proceedings related to agrotechnology, biopharmaceuticals, cleantech, semiconductor design/fabrication, and software.

Prior to joining Arnold & Porter, Mr. de Ganon practiced in Silicon Valley and Tokyo, where he primarily represented technology clients in complex, high-stakes litigation and arbitration. While resident in Tokyo, Mr. de Ganon taught law at Hitotsubashi University’s Graduate School of International Corporate Strategy. He speaks and reads Japanese fluently.

Mr. de Ganon maintains an active public interest practice. For his civil rights and immigration work, he has received the MLK Award for Civil Rights Advocacy by the Lawyers’ Committee for Civil Rights of the San Francisco Bay Area, the American Heritage Award by the American Immigration Council, the Courageous Luminaries Award by the National Immigration Law Center, the Wiley W. Manuel Award, and a California State Senate commendation.

Mr. de Ganon graduated from New York University School of Law, where he edited the Law Review. He also holds an LLM (with distinction) from the School of International Arbitration, Queen Mary University of London. He clerked for the Honorable Leonard B. Sand, US District Court for the Southern District of New York, and the Honorable John T. Noonan, Jr., US Court of Appeals for the Ninth Circuit.


  • LLM, Queen Mary University of London
  • JD, New York University School of Law
  • PhD, Princeton University
  • BA, Columbia University
  • California
  • New York
  • US Court of Appeals for the Ninth Circuit
  • US District Court, District of Delaware
  • US District Court, Northern District of California
  • US District Court, District of Arizona
  • US District Court, Southern District of New York, The Honorable Leonard B. Sand
  • US Court of Appeals for the Ninth Circuit, The Honorable John T. Noonan, Jr.

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