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Jonathan Gimblett joined the firm in 2004 following a successful career in the British Diplomatic Service. His practice combines international and antitrust law, drawing on his experience of 15 years in government. Mr. Gimblett’s international practice focuses principally on investor-state arbitration and public international law disputes, on which he advises both states and corporate clients. He also represents clients in U.S. federal court litigation relating to international law issues, including the application of the Foreign Sovereign Immunity Act (“FSIA”). His antitrust practice embraces litigation, counseling of corporate clients, and regulatory matters.

  • Representing claimants in Renta 4 et al. v. The Russian Federation (arbitration under the Rules of the Arbitration Institute of the Stockholm Chamber of Commerce) and Metal-Tech Ltd. v. Republic of Uzbekistan (ICSID).
  • Advising clients on public international law and investment issues related to the Russia-Ukraine conflict.
  • Advising and representing states and corporate clients on disputes under the UN Convention on the Law of the Sea, including in relation to the South China Sea and the Black Sea.
  • Representing a sovereign state before a U.S. Court of Appeals in a case raising issues under the FSIA and doctrine of forum non conveniens.
  • Defending a major technology company facing monopolization and tying claims in U.S. district court litigation.
  • Representing a major international bank in multidistrict class action litigation involving antitrust, market manipulation and other claims.
  • Representing a pharmaceutical company client in a Federal Trade Commission investigation and subsequent class action antitrust litigation relating to the settlement of patent infringement litigation under the Hatch-Waxman Act.

Previous Experience

  • Member of H.M. Diplomatic Service (1988-2002).
  • Private Secretary to two successive Ministers of State in the Foreign and Commonwealth Office, London (1996-1998).
  • Head of Section in the Foreign and Commonwealth Office responsible for policy on EU trade relations with third countries (1993-1995), European security architecture (1995-1996) and relations with the countries of former Yugoslavia (1998).
  • Representing UK interests as an accredited diplomat in Washington DC (First Secretary, 1999-2002), Tirana (Charge d’Affaires, 1993) and Paris (Second Secretary, OECD, 1989-1992)
  • Washington DC Super Lawyers, Antitrust Litigation "Rising Star" (2014)
  • Legal 500 US, Litigation - International Trade and Mergers, Acquisitions & Buyouts - Antitrust (2013)