The notifications and communications to the owner of the patent or patent application provided for by the provisions of articles R. 613-10 to R. 613-42 shall be validly made at the address indicated in the patent application or at the last address that the owner of the patent has notified to the administration, or at that of his representative having his domicile, registered office or place of business in a Member State of the European Community or in a State party to the Agreement on the European Economic Area. The representative appointed by the applicant for the patent at the time of filing the application shall be deemed to be such a representative, unless the appointment of another representative has been notified to the administration.
All notifications and communications addressed to the owner of the patent or patent application, to his successors in title or to applicants for or beneficiaries of ex officio licences pursuant to the provisions laid down in Articles R. 613-10 to R. 613-42 must be made by registered letter with acknowledgement of receipt.