1. Notice of appeal shall be filed in writing at the Office within two months of the date of notification of the decision. The notice shall be deemed to have been filed only when the fee for appeal has been paid. It shall be filed in the language of the proceedings in which the decision subject to appeal was taken. Within four months of the date of notification of the decision, a written statement setting out the grounds of appeal shall be filed.
2. In inter partes proceedings, the defendant may, in his response, seek a decision annulling or altering the contested decision on a point not raised in the appeal. Such submissions shall cease to have effect should the appellant discontinue the proceedings.