(1) At the request of the proprietor of a patent, the patent may be revoked or may be limited with retroactive effect by amending the patent claims.
(2) The request must be filed in writing and reasoned.
(3) The Patent Division takes a decision on the request. Section 44 (1) and sections 45 to 48 apply accordingly. If the patent is revoked, this is published in the Patent Gazette. If the patent is limited, the specification of the patent is to be adapted in respect of the limitation in the decision to grant the request; the amendment to the specification of the patent is to be published.