Paul is Judge at the General Court since 19 September 2016. His areas of research and teaching are competition law, consumer protection, and European integration. He graduated in law from the Université catholique de Louvain in 1988, holds a Master of Laws from Harvard University (1989) and a Doctor of Laws (1998).
He worked as a Legal Secretary at the Court of Justice of the European Communities from 1991 to 1995, and as a researcher at the Université catholique de Louvain from 1995 to 1999. He was Professor at the University of Groningen from 1999 to 2001 then at the Université catholique de Louvain (2001-16). He is visiting Professor at a number of universities, in particular at Paris Dauphine University (2013-16). He is Chair of the Academic Society for Competition Law (2013-16), chief editor of a number of legal journals.