1. The Office shall examine whether the application complies with the requirements laid down in Article 36(1) for the accordance of a date of filing.
2. The Office shall examine whether:
(c) the requirements of Article 77(2) are satisfied;
(d) the requirements concerning the claim to priority are satisfied, if a priority is claimed.
3. The conditions for the examination as to the formal requirements for filing shall be laid down in the implementing regulation.