Skip to main content
Thomas G. Allen

Thomas G. Allen is a litigator, focusing his practice on international arbitration and cross-border disputes. He represents clients in a variety of industries with an emphasis on energy, manufacturing, construction, and aviation. Thomas has wide-ranging experience in high-value international and U.S. arbitrations. He also litigates the enforceability of arbitration clauses and arbitration awards in U.S. Courts. Thomas is a frequent lecturer on international arbitration topics and is a former adjunct professor in the international arbitration discipline. Before concentrating on international arbitration, Thomas began his career as a commercial litigator and has tried cases to verdict in both state and federal court. Thomas also counsels foreign and domestic clients on various U.S. government investigations and enforcement proceedings.



  • Defended major Japanese manufacturer and several of its U.S. subsidiaries in an ICC Arbitration involving claims in excess of $7 billion stemming from the claimed failure of certain critical components manufactured and supplied by clients to a nuclear generating station. Clients were found to be the “prevailing party,” and were awarded fees and costs in excess of $58 million.°
  • Defended against $400 million in claims of breach of contract and intellectual property infringement in an ICC arbitration seated in Zurich, Switzerland. The client, a heavy equipment designer and manufacturer, recovered in excess of $12 million in counter-claims.°
  • Represented a Japan-based aircraft component manufacturer in National Transportation Safety Board proceedings and ICC arbitration seated in Paris related to two highly publicized safety events on a newly designed long-haul aircraft fleet.°
  • Defended iconic U.S. guitar manufacturer in a high-profile Department of Justice and U.S. Fish and Wildlife Service criminal investigation alleging Lacey Act violations regarding exotic hardwood importation.°
  • Represent Japanese electric utility in ICC proceedings seated in Tokyo related to fuel supply agreements.°
  • Conducted a foreign government-commissioned study of applicable U.S. and California law related to liability and procedure for nuclear accident claims.°
  • Represented U.S. nuclear utility in multi-jurisdictional matters related to the storage and disposal of spent nuclear fuel. Representation included breach-of-contract claims as between plant owner-operators and former minority owners in ad hoc arbitration proceedings chaired by a former U.S. Attorney General and Chief Judge of the Southern District of New York.°
  • Represent solar energy developer in Japan Commercial Arbitration Association proceedings in dispute surrounding a solar power plant.°
  • Lead counsel in arbitration for breach-of-contract claims brought against U.S. based nuclear technology and consulting company.°
  • Represented aircraft manufacturer in U.S. Department of Labor whistleblower litigation under the AIR21 Act.°
  • Represented Japanese airline parts manufacturer for all U.S.-based contract and tort claims related to the alleged falsification of safety paperwork required for regulatory approval of their products.°
  • Represented airport owner and operator in dispute with the Federal Emergency Management Agency over the provision of disaster relief funds.°

°The above representations were handled by Mr. Allen prior to his joining Greenberg Traurig, LLP.

Recognition & Leadership

  • Recognized, Washington Lawyers Committee for Civil Rights and Urban Affairs, “Outstanding Achievement in the Field of EEO Litigation,” 2011
  • Adjunct Professor, American University’s Washington College of Law, International Commercial Arbitration Summer Program, 2017
  • Board Member, Washington Lawyers Committee for Civil Rights and Urban Affairs, 2017 - present
  • Fundraising Campaign Co-Chair, Legal Aid Society of Washington, D.C., 2002-2014
  • Member, International Bar Association
  • Member, Inter-Pacific Bar Association


  • J.D., magna cum laude, The Catholic University of America, Columbus School of Law, 2002
  • B.A., The Catholic University of America, 1997
  • District of Columbia
  • Virginia
Admitted in the District of Columbia and Virginia. Has not taken the Chinese national PRC judicial qualification examination. Not admitted in Japan.