1. An applicant for a patent who wishes to avail himself of the priority of an earlier filing shall be required to file a declaration of priority and to prove the existence of the earlier application under the conditions and within the time limits laid down by regulation.
2. Multiple priorities may be claimed for a patent application, even if they originate in different States. Where appropriate, multiple priorities may be claimed for the same claim. If multiple priorities are claimed, the time limits which have the priority date as their starting point shall be calculated from the earliest priority date.
3. Where one or more priorities are claimed for the patent application, the right of priority shall cover only those elements of the application whose priority is claimed.
4. If certain elements of the invention for which priority is claimed do not appear among the claims formulated in the earlier application, it shall be sufficient, in order that priority may be granted, that the whole of the documents of the earlier application disclose the said elements in a precise manner.
5. For the purposes of the effect of the right of priority, the priority date shall be deemed to be the date of filing of the patent application for the application of the second and third paragraphs of Article L. 611-11.