The Registrar shall without delay send to all the parties to whom the decision of the Director General of the National Institute of Industrial Property has been notified, by simple letter, a copy of the notice of appeal with an indication of the obligation to constitute a lawyer.
If the letter of notification is returned to the registry or if the defendant has not constituted a lawyer within a period of one month from the date on which the letter of notification was sent, the registrar shall notify the appellant’s lawyer so that he may proceed by way of service of the notice of appeal.
On pain of the notice of appeal lapsing ex officio, service must be effected within one month of the notification sent by the registry; however, if in the meantime the defendant has constituted a lawyer before service of the notice of appeal, service shall be effected by service on his lawyer.
On pain of nullity, the writ of service shall indicate to the defendant that, if he fails to constitute a lawyer within a period of fifteen days from such service, he is liable to have a judgment given against him solely on the basis of the information provided by his opponent and that, if he fails to conclude within the period referred to in article R. 411-30, he is liable to have his pleadings declared inadmissible of his own motion.