Opposition may only be based on one or more of the following grounds:
1° The subject matter of the patent is not patentable under the terms of Articles L. 611-10, L. 611-11 and L. 611-13 to L. 611-19;
2° The patent does not set out the invention clearly and completely enough for a person skilled in the art to be able to carry it out;
>The subject matter of the patent is not sufficiently clear and complete for a person skilled in the art to be able to carry it out.
3° The subject matter of the patent extends beyond the contents of the application as filed or, where the patent has been granted on the basis of a divisional application, the subject matter extends beyond the contents of the original application as filed.
The opposition may relate to all or part of the granted patent.