1. Decisions of the Office shall state the reasons on which they are based. They shall be based only on reasons or evidence on which the parties concerned have had an opportunity to present their comments. Where oral proceedings are held before the Office, the decision may be given orally. Subsequently, the decision shall be notified in writing to the parties.
2. Any decision, communication or notice from the Office shall indicate the department or division of the Office as well as the name or the names of the official or officials responsible. They shall be signed by that official or those officials, or, instead of a signature, carry a printed or stamped seal of the Office. The Executive Director may determine that other means of identifying the department or division of the Office and the name of the official or officials responsible, or an identification other than a seal, may be used where decisions, communications or notices from the Office are transmitted by telecopier or any other technical means of communication.
3. Decisions of the Office which are open to appeal shall be accompanied by a written communication indicating that any notice of appeal is to be filed in writing at the Office within two months of the date of notification of the decision in question. The communications shall also draw the attention of the parties to the provisions laid down in Articles 66, 67 and 68. The parties may not plead any failure on the part of the Office to communicate the availability of appeal proceedings.