Languages of oral proceedings
Article 50
1. Oral proceedings shall be conducted in the language of the proceedings unless the parties agree to use a different official language of the Union. 2. The Office may communicate in oral proceedings in another official language of the Union and it may, upon request, authorise a party to do so provided that simultaneous interpretation into the language of proceedings can be made available. The costs of providing simultaneous interpretation shall be borne by the party making the request or by the Office as the case may be.