(1) In the case of Article 17, paragraph 3(a), of the Cooperation Treaty, an additional fee equal to the amount of the search fee shall be payable for each further invention for which an international search is to be carried out.
(2) In the case of Article 34, paragraph 3(a), of the Cooperation Treaty, an additional fee equal to the amount of the preliminary examination fee shall be payable for each further invention for which the international preliminary examination is to be carried out.
(3) Without prejudice to Rules 40.2(e) and 68.3(e) of the Regulations under the Cooperation Treaty, where an additional fee has been paid under protest, the European Patent Office shall review whether the invitation to pay the additional fee was justified and, if it does not so find, shall refund the additional fee. If the European Patent Office after such a review considers the invitation to be justified, it shall inform the applicant accordingly and shall invite him to pay a fee for the examination of the protest ("protest fee"). If the protest fee is paid in due time, the protest shall be referred to the Board of Appeal for a decision.
