Rule 52

(1) Decisions of the Office shall be in writing and shall state the reasons on which they are based. Where oral proceedings are held before the Office, the decision may be given orally. Subsequently, the decision in writing shall be notified to the parties.

(2) Decisions of the Office which are open to appeal shall be accompanied by a written communication indicating that notice of appeal must be filed in writing at the Office within two months of the date of notification of the decision from which appeal is to be made. The communications shall also draw the attention of the parties to the provisions laid down in Articles 57, 58 and 59 of the Regulation. The parties may not plead any failure to communicate the availability proceedings.