Erstellung und Nutzung von Pressespiegeln
Constantin Kletzer und Martin Boba, der photograph, Die Seite des Innungsmeisters, 2009/11, 10
Patents in Europe 2008 – Austrian Chapter
Constantin Kletzer und Karina Hellbert, IAM Magazine, April 2008
PLC Cross-Border Life Sciences Handbook 2008/09
Constantin Kletzer and Karina Hellbert, Austrian Chapter, London 2008
GLG, The International Comparative Legal Guide to: Pharmaceutical Advertising 2007
Austrian Chapter, Constantin Kletzer and Karina Hellbert, London 2007
PLC Cross-Border Life Sciences Handbook 2007/08 – Austrian Chapter
Constantin Kletzer and Karina Hellbert, London 2007
Asset Deals in IP: buying what you can’t see
Constantin Kletzer, Karina Hellbert and Isabella Hödl, Aija in „IP Report of Austria“, 2006
Austria: Don’t lose your trademark
Constantin Kletzer and Alice Naumann, in IP Value 2006, London 2006
Austria: Patents 2006
in Getting the Deal through – Patents 2006, London 2006
GLG, The International Comparative Legal Guide to: Pharmaceutical Advertising 2006 – Austrian Chapter
Constantin Kletzer and Karina Hellbert, London 2006
Austria: Patents 2005
in Getting the Deal through – Patents 2005, London 2005
Austria: Patents 2004
in Getting the Deal through – Patents 2004, London 2004
Global Counsel Handbooks – Life Sciences Handbook 2004/2005 – Austrian Chapter
Constantin Kletzer, Karina Hellbert and Kornel Kossuth, London 2004
EU bietet Designern Schutz – neue Verordnung sichert Rechte von Kreativen besser
in Der Standard, 19.03.2002
The Date of Completion of the Trade Mark Registration Procedure and Proper Reasons for Non-use
Kommentar zur Entscheidung des EuGH 14.06.2007, C-246/05 (Häupl/Lidl), gemeinsam mit Margit Nemetz, Journal of Intellectual Property Law & Practice, Vol 2, No 11, November 2007, Seite 713