General provisions on service
Article 64
1. In proceedings before the Office, any service of documents to be made by the Office on a party to proceedings shall take the form of the original document, of an uncertified copy thereof or a computer print-out. Documents emanating from other parties to proceedings may be served in the form of uncertified copies. 2. If a procedural representative has been appointed by one or more parties to proceedings, service shall be made on him in accordance with the provisions of paragraph 1. 3. Service shall be made: (a) by post in accordance with Article 65; (b) by delivery by hand in accordance with Article 66; (c) by public notice in accordance with Article 67; or (d) by electronic means or any other technical means in accordance with the second subparagraph. The President of the Office shall determine the details concerning service by electronic means. 4. Documents or copies thereof containing actions for which service is provided for in Article 79 of the basic Regulation shall be served by registered letter with advice of delivery served by postal means; it can also be served by electronic means to be determined by the President of the Office.