 From June 1996 until the end of 2011 Hoeren was a Judge at the Court of Appeals in Düsseldorf (IP Law senate).Hoeren is one of the legal advisors of the European Commission (DG XIII) at the “Legal Advisory Board on Information Technology”.Furthermore, he serves as legal counsel to the DENIC and is a board member of the Research Center for Information Law of the University of St. Gallen (Switzerland).