(1) A request for conversion shall be filed with the European Patent Office and shall specify the Contracting States in which application of the procedure for the grant of a national patent is desired. The request shall not be deemed to be filed until the conversion fee has been paid. The European Patent Office shall transmit the request to the central industrial property offices of the Contracting States specified therein, accompanied by a copy of the files relating to the European patent application or the European patent.
(2) However, if the applicant is notified that the European patent application has been deemed to be withdrawn pursuant to Article 77, paragraph 5, the request shall be filed with the central industrial property office with which the application has been filed. That office shall, subject to the provisions of national security, transmit the request, together with a copy of the European patent application, directly to the central industrial property offices of the Contracting States specified by the applicant in the request. The effect referred to in Article 66 shall lapse if such transmission is not made within twenty months after the date of filing or, if a priority has been claimed, after the date of priority.