His practice focuses on Intellectual Property, Technology and Life Sciences. He combines his practice with a part time appointment as an Assistant Professor ('Universitair Docent') in Intellectual Property Law at Leiden Law School in The Netherlands. In Spring 2009 Alexander taught a course on European Trade Mark Law at UC Hastings College of the Law and also worked at the San Francisco and East Palo Alto office of DLA Piper. He earned his PhD on 'Bad faith trade mark applications' in December 2005 at Leiden Law School. Alexander publishes and lectures regularly on all aspects of Intellectual Property law. Alexander has also been a visiting scholar at the Max-Planck-Institute for Intellectual Property, Competition and Tax Law in Munich, Germany in 2004. A recent interview was published in Journal of Intellectual Property Law & Practice 2008, Vol. 3, no. 7, p. 483.