Unified Patent Court
A single patent court for Member States of the European Union
The language of proceedings before any local or regional division of the Court of First Instance is an official European Union language which is the official language or one of the official languages of the state hosting the relevant division, or the official language(s) designated by the states sharing a regional division. States may designate one or more of the official languages of the European Patent Office (English, French or German) as the language of proceedings of their local or regional division. Before the central division or where the parties so agree, the language of proceedings may be the language in which the patent was granted (English, French or German).
Regarding the Court of Appeal, the language of proceedings is in general the language that was used in proceedings before the Court of First Instance of that case.