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Click here to enlarge.   Barton LEGUM IAI Member   
5 boulevard Malesherbes
75008 Paris
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Languages   English (native); French (fluent); Spanish (knowledge)
Nationality   USA
Bar Admission   New York - 1988
Georgia - 1988
Paris - 2008
Education   Université Paris II Panthéon-Assas (DEA in Public International Law - 1987); University of Georgia School of Law (JD magna cum laude - 1985); Rice University (B.A. 1982)
as Counsel  
Served as Chief, NAFTA Arbitration Division, Office of the Legal Adviser, U.S. Department of State (2000-04); numerous international arbitration proceedings under the UNCITRAL, ICSID and ICC rules, with a specialization in investment treaty arbitration; proceedings before the International Court of Justice
• ICSID Case No ARB/10/12, Standard Chartered Bank v. United Republic of Tanzania, Award, 2 Nov. 2012 (full text ITA)
Relating to  
• Editor, International Litigation Strategies and Practice (ABA Int’l Practitioner’s Deskbook Series 2005)

• "ICSID Alternatives," in International Investment Law: A Handbook , 1431 (M. Bungenberg, J. Griebel, S. Hobe, and A. Reinisch eds., Nomos, 2015) (with J.C. Honlet and A. Crevon)

• "Performance Requirements," in Building International Investment Law – The First 50 Years of ICSID 415 (M. Kinnear et al. eds., Kluwer, 2015) (with I. Petculescu)

• "Of Definitions and Disregard: An Editorial," 30(2) ICSID Rev. 261(2015)

• "A Set of Rules Dedicated to Investor–State Mediation: The IBA Investor–State Mediation Rules," 29(1) ICSID Rev. 17 (2014)

• "The Ten Commandments of Written Advocacy in International Arbitration," 29(1) Arb. Int'l 1 (2013)

• "France," in The International Arbitration Review, Vol. I, at 98 (Law Business Research, 2010) (with C. Honlet and A.S. Dufêtre)

• "Coûts et durée des procédures (étude comparée des mécanismes CIRDI et CNUDCI)," 6 Revue Droit & Affaires 52 (2008)

• "Understanding Performance Requirement Prohibitions in Investment Treaties," in Contemporary Issues in International Arbitration and Mediation: The Fordham Papers 2007, at 53 (A.W. Rovine ed., 2008)

• "Options to Establish an Appellate Mechanism for Investment Disputes," in Appeals Mechanism in International Investment Disputes 231 (K.P. Sauvant and M. Chiswick-Patterson eds., OUP, 2008)

• "The Definitions of 'Precedent' in International Arbitration," in Precedent in International Arbitration, IAI Series on International Arbitration No. 5, at 5 (Y. Banifatemi ed., Juris Publishing, 2008)

• "Are States Liable for the Conduct of their Instrumentalities? - Case Law of Tribunals Other Than ICC and ICSID," in State Entities in International Arbitration, IAI Series on International Arbitration No. 4, at 57 (E. Gaillard and J. Younan eds., Juris Publishing, 2008)

• "Defining Investment and Investor: Who is Entitled to Claim? ," 22(4) Arb. Int’l 521 (2006)

• "La réforme du CIRDI : vers une juridictionnalisation de l’arbitrage transnational ?," in Où va le droit de l’investissement ? 283 (F. Horchani ed., 2006)

• "The Difficulties of Conciliation in Investment Treaty Cases: A Comment on Professor Jack C. Coe’s 'Toward a Complementary Use of Conciliation in Investor-State Disputes—A Preliminary Sketch'," 21(4) Int'l Arb. Rep. (2006)

• "Visualizing an Appellate System," in Investment Treaty Law 121 (F. Ortino, A. Sheppard & H. Warner eds., 2006); reprinted in 2(2) Transnat'l Dispute Management 64 (Apr. 2005) (

• "Introductory Note to Methanex Corporation v. United States of America," 44 ILM 1343 (2005)

• "Investment Treaty Arbitration: An Option Not to Be Overlooked," in International Litigation Strategies and Practice 189 (ABA Int’l Practitioner’s Deskbook Series 2005)

• "The Contribution of Investment Treaty Arbitration to International Commercial Arbitration," 60 Dispute Resol. J. 70 (Aug.-Oct. 2005)

• "Investment Treaty Arbitration: The Big Bang," 99 A.S.I.L. Proc. (2005)

• "Investor-State Arbitrator Disqualified for Pre-Appointment Statements on Challenged Measures," 21(2) Arb. Int’l 241 (2005)

• "Lessons Learned from the NAFTA: The New Generation of U.S. Investment Treaty Arbitration Provisions," 19(2) ICSID Rev. 344 (2004)

• "The Introduction of an Appellate Mechanism: The U.S. Trade Act of 2002," in Annulment of ICSID Awards, IAI Series on International Arbitration No. 1, at 289 (E. Gaillard and Y. Banifatemi eds., 2004)

• "Trends and Challenges in Investor-State Arbitration," 19(2) Arb. Int’l 143 (2003)

• "The Innovation of Investor-State Arbitration under NAFTA," 43 Harv. J. Int'l L. 531 (2002), republished in 2(2) Oil-Gas-Energy Intelligence Service (OGEL) (Apr. 2004) (

• "Commentary: ICSID Proceedings in the Absence of a Bilateral Investment Treaty," 18(3) Arb. Int’l 305 (2002)

• "Federalism, NAFTA Chapter Eleven and the Jay Treaty of 1794," 95 A.S.I.L. Proc. 202 (2001), reprinted in 18 News from ICSID 11 (Spring 2001)

• "Representing States - a US Perspective," 6 Arbitration & ADR 46 (IBA Newsletter, Committee D, June 2001)

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