Born 1962; studied at Bonn, Geneva and Paris; State examination in law (1986 and 1992); Doctor of Laws (University of Bonn, 1988); International diploma in public administration (École nationale d'administration, 1990); teaching authorisation (University of Bonn, 1996); Professor of German public law and European law (1996-2003), Dean of the Faculty of Law of the Ruhr University, Bochum (2000-01); Professor of German public law and European law (University of Cologne, 2003-06); Director of the Institute of Public Law and Administrative Science (2006); Visiting professor at the Fletcher School of Law and Diplomacy (2000), François Rabelais University, Tours (2001-06), and the University of Paris I, Panthéon-Sorbonne (2005-06); Doctor honoris causa of François Rabelais University, Tours (2010); Judge at the Court of Justice since 7 October 2006.
