Philip J.Devenish


London + 44.20.7039.5531

Philip Devenish provides counsel and strategic advice in international disputes. Over the past decade, he and his colleagues have won billions of dollars in awards and settlements for clients in their most sensitive and complex matters. Who's Who Legal and Global Arbitration Review (GAR) call him "an outstanding lawyer" and "a true rising star."

Philip has represented corporations, ultra-high-net-worth individuals (UHNWIs), and foreign governments in some of the largest and most significant international cases in recent years, as ranked by The American Lawyer and GAR. Before joining Jones Day, he served on the trial team that secured a $1.3 billion victory for JSC Oschadbank in an arbitration against Russia, marking the first occasion that Russia had been held internationally liable for seizing assets in Crimea.

Philip is ranked among the world's leading practitioners in global disputes, as judged by his peers, corporate counsel, and market sources. In 2020 the International Financial Law Review rated him as one of the most promising "rising stars" in the United Kingdom across all fields of practice. The Legal 500 UK and other directories report that he is "widely praised by peers and clients"; "amongst the world's highest ranked arbitration lawyers"; "extremely sharp"; "extremely diligent"; "polished and confident"; "an excellent communicator"; "a very strong project manager"; "capable, efficient and very intelligent"; with "outstanding technical ability and reliability" and "strategic input that is always spot on."


  • PTTGC acquires allnex from AdventJones Day is advising PTT Global Chemical Public Company Limited in the €4 billion acquisition of allnex Holding GmbH from Advent International.
  • Clients seek advice in connection with criminal investigation and potential criminal and civil claims relating to alleged fraud of over US$1 billionJones Day is advising clients in connection with a criminal investigation and potential criminal and civil claims relating to an alleged fraud of over US$1 billion.
  • Saudi businessman brings investment arbitration proceedings against Middle Eastern stateJones Day represents a Saudi Arabian businessman in investment arbitration proceedings against a Middle Eastern state.
  • Windoor arbitrates ICSID claim against KazakhstanJones Day is representing Estonian construction company AS Windoor in ICSID arbitration proceedings against the Republic of Kazakhstan.
  • U.S. healthcare company arbitrates ICC claim against Middle Eastern hospital proprietorJones Day is representing a Pittsburgh-based international healthcare management and consulting company in an ICC commercial arbitration against an owner of medical centers and clinics in the Middle East.
  • Canadian mining company initiates UNCITRAL arbitration against KazakhstanJones Day represents a Canadian mining company in an UNCITRAL arbitration against the Republic of Kazakhstan.
  • Additional Publications

    • 2021
      "Enforcement of investment treaty awards against assets of states, state entities and state-owned companies", in Enforcement of Investment Treaty Arbitration Awards (2nd edn., Globe Law and Business, 2021)