I.-During the opposition proceedings, the proprietor of the contested patent may amend the claims of that patent provided that:
1° the amendments made meet one of the grounds for opposition mentioned in Article L. 613-23-1 raised by the opponent;
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2° The amendments made do not extend the subject-matter of the patent beyond the contents of the application as filed or, where the patent has been granted on the basis of a divisional application, do not extend its subject-matter beyond the contents of the initial application as filed;
The amendments made do not extend the subject-matter of the patent beyond the contents of the initial application as filed.
3° The amendments made do not extend the protection conferred by the patent;
4° The amended claims comply with the provisions of Articles L. 611-10, L. 611-11, L. 611-13 to L. 611-19, L. 612-5 and L. 612-6 and their wording complies with the conditions of form defined by decree in the Council of State.
II.
II – During the opposition procedure, the owner of the contested patent may also amend the description and, where applicable, the drawings, provided that:
1° the amendments are made in response to the ground for opposition referred to in 2° of Article L. 613-23-1 raised by the opponent;
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2° The amendments made do not extend the subject matter of the patent beyond the contents of the application as filed or, where the patent has been granted on the basis of a divisional application, do not extend its subject matter beyond the contents of the original application as filed.