The Difficult Interface between Opposition Proceedings before the EPO and parallel national proceedings: will the new Spanish Patent Act shed some light?
One of the tricky consequences of Article 64 of the European Patent Convention (“EPC”), which establishes that the European patent is immediately enforceable after its publication, and Article 99, which provides for “post-grant” oppositions, is that quite often the combination of these two articles fuels two trains that run in parallel where the validity of…