Who is entitled to request limitation or revocation of a European patent?
Under Article 105a(1) EPC 2000, a European patent may be revoked or limited by an amendment of the claims at the request of the proprietor. Since the European patent after grant becomes a bundle of national patents, which can have different proprietors, each of these (national) patentees is entitled to request limitation or revocation. Since proprietorship is a condition of entitlement to make such a request, Rule 92(2)(a) provides that the request must contain an indication of the contracting states for which the requester is the proprietor of the patent. Proprietorship can be proven by, in particular, an extract from the relevant national patent register, or by other appropriate means. Top of page 12. What aspects have to be considered in limitation or revocation proceedings where the requester is the proprietor of the patent only for some of the contracting states in which the European patent is valid? Rule 92(2)(c) EPC 2000 requires that the requester provide the names and addresse
