Mr. Treves is a Senior International Consultant in the International Arbitration group.
Previously, Mr. Treves was a Judge of the International Tribunal for the Law of the Sea from 1996 to 2011. Within the Tribunal, he was the President of the Seabed Disputes Chamber, including in the proceedings for the delivery, on 1 February 2011, of an Advisory Opinion upon the request of the Council of the International Seabed Authority. He has chaired the Tribunalís Committee of the Whole for the drafting of the Rules of the Tribunal.
Mr. Treves has acted as the Counsel of France in the Arbitration with Canada on the delimitation of maritime zones in the area of Saint-Pierre-et-Miquelon, for Finland in the Great Belt case before the International court of Justice, of Peru in the maritime dispute with Chile (pending). He is an Ad hoc Judge chosen by Panama in the Virginius case before the International Tribunal for the Law of the Sea (pending). Finally, he has experience as a Consultant to various Governments and International Organizations and as Chairman of an Arbitration tribunal of the Cairo Regional Centre for International Commercial Arbitration.
Between 1984 and 1992, Mr. Treves was a Legal Adviser to the Permanent Mission of Italy at the United Nations in New York. In this capacity he chaired various working groups of the Sixth Committee and was a member of the Italian delegation to the Security Council.
Mr. Treves is a Professor of Public and Private International Law at the Law Faculty of the State University of Milano, a position he has held since 1980.