IPFrontline Staff. Making Innovation Pay // ipFrontline.com, March 11, 2006. Архивиран от оригинала на 2006-09-03. Посетен на 2007-07-27.
ipkitten.blogspot.de
Ward, Annsley Merelle. Fordham Report 2014: The European Unitary Patent and the Unified Patent Court // IPKat, April 25, 2014. Посетен на May 25, 2014. Europe also has a loser pays costs regime which is one reason why unlike in the US the troll problem is not too bad. [quoting Klaus Grabinski of the German Federal Supreme Court