1 2 Software Patents in Europe, Chairman's Opening Remarks, Speaker: Paul Hartnack, Comptroller General, The Patent Office, Last updated 6 December 2000 (Archive.org). ↑ http://www.wto.org/english/docs_e/legal_e/27-trips.pdf TRIPS Agreement ↑ http://legal.un.org/ilc/texts/instruments/english/conventions/1_2_1986.pdf Vienna Convention on the Law of Treaties ↑ John Moetteli, The Patentability of Software in the U.S. and Europe, presented at St. Gallen, Switzerland, 28 October 2005, p.3 (pdf), retrieved on 3 July 2006 ↑ Rocard, Michel, COD/2002/0047 EP: tabled legislative report, 1st reading, Amendment 19 Article 8, letter (c a) (new) (ca) any difficulties that have arisen with the relationship between protection by means of patents on computer-implemented inventions and the protection of computer programs by means of copyright law, as laid down in Directive 91/250/EEC.