A European patent application may give rise to rights in rem, may be licensed and may be the subject of legal means of execution. Rule 20(1) and (2) apply mutatis mutandis to the registration of the grant, establishment or transfer of such rights (see XIII, 1).

A licence will be recorded in the Register of European Patents as an exclusive licence if the applicant and the licensee so require. A licence will be recorded as a sub-licence where it is granted by a licensee whose licence is recorded in the Register of European Patents.

Upon request and subject to the payment of the prescribed administrative fee, registered licences and other rights are cancelled on production of documents satisfying the EPO that the right has lapsed, or of a declaration of the proprietor of the right that he consents to the cancellation.