As the readers will know, the complex architecture of the European patent system allows third parties to challenge the validity of a patent by filing an opposition before the European Patent Office (“EPO”), by filing a revocation action before national Courts, or by using both routes. In some cases, this has given rise to the…

To stay, or not to stay, that is the question. But not in the recent Danisco v. Novozymes case before the District Court of The Hague. On the face of the Court’s decision of 22 June 2011, the question whether to stay the national proceedings pending the outcome of opposition proceedings at the EPO on…

During EPO opposition proceedings, patentees have historically been able to avoid discussing clarity by combining granted claims rather than using the description as basis for amendments. The landmark cases T 227/88 and especially T 367/96 have been relied on to support this position. However, some technical boards of appeal are now starting to engage in…

The decision of the Board of Appeal of the European Patent Office which revokes a European patent due to lack of inventive step, is a supra-national legal instrument which can be the object of a complaint to the German Constitutional Court. Such complaints are only admissible if the protection of fundamental rights is no longer…

The Court held that in order to decide that a patented invention is novel, it is not sufficient that the wording in the patent description is different from the wording in the prior art. The technical subject-matter of the prior art must be different. Moreover, it had to be assessed whether publicly accessible information could…

Questions submitted to the Enlarged Board. During opposition the Proprietor announced that it wanted a correction of the decision to grant from the examining division. The opposition division decided to stay proceedings and the Opponent appealed the decision to stay. The Board submitted questions to the Enlarged Board, asking (1) whether a request for correction…

A 1 July 2009 decision of the Tribunal de Grande Instance of Paris illustrates how the French courts proceed when they are seised of a nullity claim of the French designation of a European patent against which opposition may be filed or opposition proceedings are pending.