Professor Marcelo Kohen

Member of the Board of Directors

  • Professor, Graduate Institute of International and Development Studies;
  • Titular Member, Institute of International Law, and since 2015 its Secretary General


Marcelo Kohen is Professor of International Law at the Graduate Institute of International and Development Studies in Geneva, Titular Member of the Institute of International Law and since 2015 its Secretary General He has acted as counsel and advocate for a number of States in contentious and advisory proceedings before the International Court of Justice, the International Tribunal for the Law of the Sea and arbitral tribunals in cases related to territorial and maritime disputes, shared resources and self-determination, among others. He is also arbitrator. Author of about hundred of works in the field of International Law, in French, English and Spanish. His book ‘Possession Contestée et  Souveraineté territoriale’ (Adverse Possession and Territorial Sovereignty) was awarded the Paul Guggenheim Prize 1997. He has also been Rapporteur or Co-rapporteur on matters of State Succession and State Immunity for the International Law Association, the Council of Europe and the Institute of International Law. He was one of the founders  of the Latin American Society of International Law and its Director General until 2015. He received a PhD of the University of Geneva (Graduate Institute of International Studies) and the Hague Academy Diploma of International Law. He has been visiting professor in different European Universities and guest speaker in several institutions in the Americas, Asia, Africa and Europe. 

Key works:

  • Possession contestée et souveraineté territoriale, Paris, P.U.F.,1997, 582 p., Paul Guggenheim Prize 1997.
  • State Practice Regarding State Immunities/ La pratique des Etats concernant les immunités des Etats (co-ed. with Gerhard Hafner and Susan Breau), Leiden, M. Nijhoff and Council of Europe, 2006, xxviii+1100p.
  • Secession. International Law Perspectives (ed). Cambridge, Cambridge University Press, 2006, 510p.