If there is more than one applicant (see IX, 1.3), each applicant or his representative must sign the request for grant and, where applicable, the appointment of the common representative. This also applies if one of the applicants is considered the common representative pursuant to Rule 100(1), first sentence. However, the common representative may sign the designation of inventor and all documents filed after the filing of the application pursuant to Rule 36(3). Authorisations on behalf of more than one applicant must be signed by all applicants.