The Unified Patent Court Agreement was signed by 25 EU Member States on 19 February 2013. The following 16 states have ratified the UPC Agreement up to now (status updated 26 April 2018):
The UPC agreement now only requires ratification by the Germany, to enable the Unified Patent Court to open for business. Germany is making progress towards ratification.
Although there are still delays, we still strongly recommend that owners of European patents do not delay decisions about which of their European patents to “opt out” from the jurisdiction of the UPC and which should fall within the jurisdiction of this new court. It may be possible to register “opt outs” as soon as 2018. For advice on this issue, you can contact the patent attorneys at AA Thornton.