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Grant Hanessian has more than 25 years of experience as counsel and arbitrator in disputes concerning contract, investment treaty, energy, construction, commodities, financial services, insurance, intellectual property and other matters.

Mr. Hanessian serves as co-chair of the Firm’s International Arbitration Group. He chaired the Litigation Department of the Firm’s New York office from 2003 to 2012. Mr. Hanessian is vice chairman of the Arbitration Committee of the US Council for International Business (USCIB), the US national committee of the International Chamber of Commerce (ICC), and a member of the ICC’s Commission on Arbitration and its Task Force on Arbitration Involving States or State Entities, the American Arbitration Association-International Centre for Dispute Resolution’s International Advisory Committee and Advisory Committee on Brazil, the New York State Bar Association Task Force on International Arbitration, 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 International Law Committee 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 (Juris Pub. 2012) and co-editor of Comparison of International Arbitration Rules (American Bar Association Section of International Law, forthcoming 2013), International Arbitration Checklists (Juris Pub., 2nd ed., 2008), Gulf War Claims Reporter (ILI/Kluwer, 1998) and Baker & McKenzie's International Litigation & Arbitration Newsletter. Mr. Hanessian is recommended by Chambers Global and USA (described as "very experienced, hugely knowledgeable and effective" and "well respected and focused"), PLC Which lawyer?, Legal 500, The International Who’s Who of Commercial Arbitration and Expert Guide to Leading Practitioners in International Arbitration.