The documentary opinion shall be drawn up in accordance with the following procedure:
I.-When requested by the patent owner:
1. A draft is drawn up and notified to the patent proprietor. He shall be given a period in which to discuss its merits, if any.
2. The opinion is drawn up in the light of the draft and any observations made. It is notified to the patent proprietor.
II.-Where it is not requested by the patent proprietor:
1. The patent proprietor shall be notified of the request for an opinion without delay. He shall be given a period in which to submit observations and, where appropriate, appoint a representative meeting the conditions set out in Article R. 612-2.
2. A draft is drawn up in the light of the observations in response. This draft is notified to the patent proprietor and the applicant. They are given a period in which to discuss its merits, if any.
3. The opinion is drawn up in the light of the draft opinion and any observations made. It is notified to the patent proprietor and the applicant.
The Institute shall ensure that the principle of adversarial proceedings is respected. Any observations made by the patent proprietor or the applicant shall be notified without delay to the other.