Article 2

Nothing in this Agreement shall be construed as restricting the right of the States parties to this Agreement to prescribe that, in the case of a dispute relating to a European patent, the patent proprietor, at his own expense,
a) shall supply, at the request of an alleged infringer, a full translation into an official language of the State in which the alleged infringement took place,
b) shall supply, at the request of the competent court or quasi judicial authority in the course of legal proceedings, a full translation into an official language of the State concerned.