The notifications provided for in Article L. 613-22 and in articles R. 612-3-2, R. 612-8, R. 612-9, R. 612-11, R. 612-46 to R. 612-49, R. 612-56, R. 612-73, R. 613-44 to R. 613-45, R. 613-45-3, R. 613-52 and R. 613-58 shall be made by registered letter with acknowledgement of receipt.
Registered mail may be replaced by delivery of the letter to the addressee against a receipt, on the premises of the National Institute of Industrial Property, or by a message in electronic form in accordance with the procedures laid down by decision of the Director General of the Institute to guarantee in particular the security of the dispatch.
If the address of the addressee is unknown, notification shall be made by publication of a notice in the Official Bulletin of Industrial Property.