One of the principles inherited from Roman law is that “venire contra factum propium non valet“. In civil law countries such as Spain, this principle is normally labelled as the “doctrine that prohibits acting against one’s own acts” (prohibición de actuar contra los propios actos).  In common law countries, the principle is normally associated with…

A patent that is limited during the course of the proceedings (even after the pleadings) is held to have been so limited ab initio if the limitation is duly registered. When a European patent is granted and validated, an existing national patent loses its effect only for the invention claimed in the European patent. The…

The Court held that a selection invention is inventive if the compound of the selection offers surprisingly advantageous or improved properties over the prior art compounds. These properties should already be plausible from the patent application as filed. Further, a selection invention would be obvious to the skilled person if they would assume a neutral…

Late in 2018, Board 3.5.07 issued two decisions on appeals from Examining Division decisions, in which the length of the examination procedure was excessive.  The Board decided that such delays can amount to a substantial procedural violation, but that it is only equitable to reimburse the appeal fee if the applicant took some proactive measures…

Pemetrexed, yet again: last Wednesday the District Court of The Hague, swimming against the current and after a deep dive in the prosecution file, decided that Fresenius did not infringe Eli Lilly’s ‘pemetrexed disodium’ patent with a generic product that does not contain pemetrexed disodium, not even by equivalence. The basic facts of the widespread…