Article 105a¹¹⁵
Request for limitation or revocation

(1) At the request of the proprietor, the European patent may be revoked or be limited by an amendment of the claims. The request shall be filed with the European Patent Office in accordance with the Implementing Regulations. It shall not be deemed to have been filed until the limitation or revocation fee has been paid. 

(2) The request may not be filed while opposition proceedings in respect of the European patent are pending.