Georgios Petrochilos KC

As counsel, he has acted in over 100 cases. These span a broad spectrum: inter-State cases in the International Court of Justice (three cases), the WTO, and various UN and ad hoc tribunals; some 30 investment-treaty cases, including before ICSID tribunals and annulment Committees; and commercial disputes under the major arbitration Rules (ICC, LCIA, SCC, SIAC, UNCITRAL/PCA). His work has notably concerned matters in the energy sector (in particular, long-term gas supply contracts), shareholder disputes, banking and finance, defence, infrastructure projects, mining, and technology disputes. He also regularly appears in the English courts. His clients include States, state-owned companies, international organizations including the United Nations, and major corporates, including in Greece.

As arbitrator, he has served in some 50 cases, again spanning a variety of economic sectors, as well as select sports-related cases. Investment-treaty cases: he chaired in Güris v Syria and Okuashvili v Georgia, was a tribunal member in Nurol v Libya and Ersoy v Azerbaijan, and sole (emergency) arbitrator in GPF v Poland and Evrobalt v Moldova. He has also served as sole arbitrator or tribunal member in various disputes involving international organizations, under the auspices of the Permanent Court of Arbitration and the SCC. He was recently designated by the Government of the Hellenic Republic to serve on the Panel of Arbitrators maintained by ICSID.

Scholarly work includes a standing course on investment protection under international law at the University of Geneva (shared with Dr Pattochi); serving as the rapporteur leading the International Law Association project on the reasoning by arbitral tribunals (Resolution No 6/2022 and underlying reports); and serving on the International Bar Association taskforce for the revision of the Guidelines on Party Representation in International Arbitration (in progress). He has also lectured at the Universities of Bern, Fribourg, Paris 1 – Panthéon-Sorbonne, and Sciences Po, as well as the World Economic Forum.

Legislative work includes serving as the delegate of Greece in the revision of the United Nations (UNCITRAL) Arbitration Rules (2006-2010) and a member of the committee which prepared Law 5016/2023 on international arbitration.

Publications since 1995 include two monographs (Procedural Law in International Arbitration (2004) and UNCITRAL Arbitration (with Professor Paulsson, 2018; second edition in preparation)); two books as general editor (Arbitration in Greece (with Professor Calavros, forthcoming 2026) and Social License and Dispute Resolution in the Extractive Industries (with Kent et al, 2021)); a number of chapter-length contributions in collective works (including “ICSID Convention” and “ICSID Arbitration Rules,” in the Kluwer Concise Commentary on International Arbitration); and numerous papers in peer-reviewed periodicals such as the ICLQ, ICSID Review, and Cahiers de l’Arbitrage. These deal with a broad range of topics in international law, international arbitration and procedure, and energy law. Finally, Georgios is a frequent conference panel-leader or speaker, including at the 2026 biennial ICCA Congress (panel leader on “Reviving Efficiency in Arbitration”).