Prof. Dr. Helen Keller, LL.M., studied law at the University of Zurich and obtained her doctorate in 1993. This was followed by an LL.M. at the Collège d’Europe in Bruges, Belgium, a 1995 research fellowship at the European Law Research Center at Harvard Law School, Cambridge, Massachusetts, and a further research fellowship at the European University Institute in Florence in 1996. In 2002, Prof. Keller completed her habilitation at the Faculty of Law of the University of Zurich. From 2002 to 2004, she held the position of professor (ordinaria) for constitutional law at the University of Lucerne, Switzerland. She then accepted a position at the University of Zurich, where she taught constitutional, European and international law until 2011. From 2008 to 2011 she was a member of the United Nations Human Rights Committee. The Parliamentary Assembly of the Council of Europe elected Prof. Keller as a judge at the European Court of Human Rights in 2011.