An applicant who has not complied with the priority period instituted by Article 4 of the Paris Convention for the Protection of Industrial Property in respect of the National Institute of Industrial Property may lodge an appeal with a view to having his right restored if he proves a legitimate excuse.
The patent application, filed more than one year after the earlier application whose priority it claims, must be filed within two months of the expiry of the priority period.
The appeal must also be filed with the Director General of INPI within two months of the expiry of the priority period. However, the appeal is not admissible if it is filed after the technical preparations for publication of the patent application have been completed.