Joseph Klingler

Associate - Washington, D.C.

Joe Klingler
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Contact Information

Joseph Klingler is an associate in the firm's International Litigation and Arbitration Department. He exclusively represents sovereign States and State-owned entities before the world's principal dispute resolution bodies.


  • Harvard Law School, J.D., magna cum laude, 2014
  • Loyola University, B.A., summa cum laude, 2005
  • The Fletcher School of Law and Diplomacy, MALD, 2014


German, Spanish (intermediate)

Representative Experience

State-to-State Experience

  • Application of the International Convention on the Elimination of All Forms of Racial Discrimination (Qatar v. UAE). Counsel to the State of Qatar before the International Court of Justice with respect to claims arising from breaches of the ICERD by the UAE.
  • Legal Consequences of the Separation of the Chagos Archipelago from Mauritius in 1965. Counsel to Mauritius in advisory proceedings before the International Court of Justice concerning the completion of the decolonization process. 
  • Philippines v. China. Represented the Philippines in an arbitration pursuant to Annex VII of the United Nations Convention Law of the Sea regarding maritime jurisdiction. The Tribunal rejected China’s claim to “historic rights” in the maritime areas encompassed by its so-called “nine-dashed line” as inconsistent with the U.N. Convention on the Law of the Sea, and found that China violated the Philippines' sovereign rights under the Convention.
  • Costa Rica v. Nicaragua. Conducted research on behalf of Nicaragua in a maritime boundary delimitation case against Costa Rica before the ICJ.

Investor-State Experience

  • Ritika Mehta, Vinita Agarwal, and Prenay Agarwal v. the Oriental Republic of Uruguay. UNCITRAL arbitration before the Permanent Court of Arbitration (PCA). Counsel to Uruguay in an arbitration brought under the Uruguay-UK BIT, involving a large-scale iron ore mining project, which the claimants allege to be worth $3.47 billion.
  • Niko Resources v. Bapex and Petrobangla. Represented two Bangladeshi State entities in two ICSID arbitrations concerning the causes and impacts of two gas blowouts
  • City-State v. Ukraine. Represents Ukraine in an ICSID arbitration under the Ukraine - Netherlands investment promotion and protection treaty relating to the financial sector.
  • Louis Dreyfus Armateurs SAS (France) v. The Republic of India. Represents India in an arbitration brought under the France-India bilateral investment treaty before the Permanent Court of Arbitration.
  • Merck Sharpe & Dohme (I.A.) v. The Republic of Ecuador. Helped advise the Republic of Ecuador in an UNCITRAL arbitration under the Ecuador - U.S. bilateral investment treaty.


  • Fulbright Fellow, 2006-2007 (Germany)
  • Salzburg-Cutler Fellow, 2013


  • Vice Chair, Fletcher Lawyers Network (2018-present)
  • Board Member, The Fletcher School of Law and Diplomacy DC Chapter Alumni Group (2017-present)
  • Panelist, 2013 American Society of International Law mid-year meeting and research forum.