Where the Office has made an entry in the Register or taken a decision which contains an obvious procedural error attributable to the Office, it shall ensure that the entry is cancelled or the decision is revoked. Where there is only one party to the proceedings and the entry or the act affects its rights, cancellation or revocation shall be determined even if the error was not evident to the party.

Cancellation or revocation as referred to in paragraph 1 shall be determined, ex officio or at the request of one of the parties to the proceedings, by the department which made the entry or took the decision. Cancellation or revocation shall be determined within six months from the date on which the entry was made in the Register or the decision was taken, after consultation with the parties to the proceedings and any proprietor of rights to the Community trade mark in question that are entered in the Register.

The Commission shall be empowered to adopt delegated acts in accordance with Article 163a specifying the procedure for the revocation of a decision or for the cancellation of an entry in the Register.