Photo, Grant Hanessian

Grant Hanessian

Baker & McKenzie LLP


Grant Hanessian led Baker McKenzie's International Arbitration Practice Group in North America from 2005 to 2018. He served as chair of the Firm's global International Arbitration Practice Group from 2009 to 2015, and as chair of the Litigation Department of the Firm's New York office from 2003-2012.

Mr. Hanessian is the US member of the ICC International Court of Arbitration in Paris, chairman of the Arbitration Committee of the US Council for International Business (US national committee of the ICC), and a member of the ICC’s Commission on Arbitration, and its Task Forces on Arbitration Involving States or State Entities and on Financial Institutions and International Arbitration (leader of Investment Arbitration and Banking & Finance work stream). He is vice president (for US) of the London Court of Arbitration's North American Users' Council and a member of the American Arbitration Association—International Centre for Dispute Resolution’s International Advisory Committee and its Advisory Committee on Brazil, the Singapore International Arbitration Centre's Users Council, the International Arbitration Club of New York, the Arbitration Committee of the International Institute for Conflict Prevention and Resolution, the New York City Bar Association's Committee on International Commercial Disputes and Club Español del Arbitraje, and is a founding board member of the New York International Arbitration Center.

Mr. Hanessian is editor of ICDR Awards and Commentaries, Vol I (Juris Pub., 2012) and Vol II (forthcoming Juris Pub. 2018), International Arbitration Checklists (Juris Pub., 3rd ed., 2016), Gulf War Claims Reporter (ILI/Kluwer, 1998),Baker McKenzie's International Litigation & Arbitration Newsletter, and Baker McKenzie's International Arbitration Yearbook. He has authored more than 50 articles and book chapters and spoken at conferences and universities worldwide on international dispute resolution topics.

Mr. Hanessian is annually recommended by Chambers Global and USA Guides (described as “very knowledgeable and strategic in his offering of critical advice,” an "elite lawyer" who is "very experienced, hugely knowledgeable and effective," a "powerful advocate for clients"), Legal 500 (described as “a great practitioner” with a “strong commercial profile”), PLC Which Lawyer, The International Who's Who of Arbitration (described as "very well known and well regarded" for being a "superb counsel and arbitrator") and Expert Guide to Leading Practitioners in International Arbitration (ranked among "Best of the Best" in international commercial arbitration).

Practice Focus

Mr. Hanessian has more than 30 years of experience as counsel and arbitrator in disputes concerning contract, investment treaty, energy, construction, commodities, financial services, insurance, intellectual property and other matters before virtually all of the world’s major arbitration institutions.

Representative Legal Matters

  • Representing investors and states in arbitrations concerning claims under bilateral and multilateral investment treaties.
  • Representing an international oil & gas company in contract dispute a downstream R&D partner in Asia.
  • Representing a Turkish pharmaceutical company in dispute with a minority shareholder in US operations.
  • Representing the US affiliate of a Spanish media company in dispute concerning minority shareholder buyout.
  • Representing a South American energy company in New York arbitrations concerning engineering, construction and other contractual matters.
  • Representing a US company in Panama arbitration concerning contractual disputes with South American parties.
  • Representing a US subsidiary of a French company in arbitrations and domestic court actions concerning EPC contracts for ethanol projects.
  • Representing a Taiwanese railway company in a Singapore arbitration regarding a contract to provide trains for high-speed railway in Taiwan.
  • Representing a Korean manufacturer of semiconductor equipment in New York arbitration and subsequent US bankruptcy proceedings concerning joint development and sales agreement.
  • Representing an Asian government in arbitration and domestic court actions regarding contractual disputes relating to bond offering.


  • New York~United States (1986)


  • Columbia University (LL.M.) (1985)
  • New York University (J.D.) (1980)
  • University of Pennsylvania (B.A.) (1975)


  • English
  • French
  • Spanish