Born in 1937,holds a Ph.D. in Law from the University of Innsbruck (Austria). From 1958-1961, Leuprecht served as an assistant lecturer at the Faculty of Law of the University of Innsbruck while also performing work at the Bar. He then worked from 1961-1997 as an official in the Secretariat General of the Council of Europe in Strasbourg, France, where he acted as the Secretary of the Committee of Ministers from 1976-1980. Leuprecht was appointed Director of Human Rights in 1980, before his election to the post of Deputy Secretary-General in 1993, a position he would leave before the end of his term due to disagreement with the dilution of Council of Europe standards.
Leuprecht was awarded the Prix du civisme européen in 1991 and the Human Rights Award of the Lord Reading Law Society in 2001. He also served as a member of a committee of four sages which prepared a Human Rights Agenda for the European Union, and was appointed as the UN Secretary-General's Special Representative for Human Rights in Cambodia in 2000.
He is the author of numerous publications in the field of international law and human rights, and has taught at the universities of Strasbourg and Nancy (France) as well as at the European Academy of Law in Florence (Italy). From 1997-1999, he was a visiting professor at both the Faculty of Law of McGill University and the Department of Juridical Sciences of the Université du Québec à Montréal (UQAM), while acting as an advisor to the Canadian Department of Justice. Dean of the Faculty of Law of McGill University until 2003, Leuprecht is currently Director of the Montreal Institute of International Studies and Professor in the Department of Juridical Sciences at UQAM.