The Fentanyl Decision – Lessons to be learned for Claim Construction and Novelty
By final judgment of November 18, 2010 (Xa ZR 149/07, published in Mitt. 2011, 66 (in German only)), the German Federal Court of Justice (FCJ) decided on two interesting issues in nullity appeal proceedings regarding the German patent DE 101 41 650 pertaining to a patch containing the opioid fentanyl, a strong analgesic drug. Firstly,…