Regulation 42:(1) An application to the Registrar under sections 26, 27, 32 or 33 of the Act to make, expunge or vary any entry in the register shall be made in writing, and shall be accompanied by a statement setting out fully the nature of the applicants interest, the facts upon which he bases his case and the relief which he seeks.(2) Where the application is made by a person who is not the registered proprietor of the trade mark in question it shall be accompanied by two copies of the application and two copies of the statement, and the Registrar shall forthwith send these copies to the registered proprietor at his trade or business address as entered in the register and, if an address for service different therefrom is entered in the register, at that address also.(3) Upon such application being made, and copy thereof sent to the registered proprietor, if necessary, the provisions of regulations 16 to 22 shall apply mutatis mutaudis to the further or remove the mark from the register merely because the registered proprietor has not filed a counter-statement. In any case of doubt any party may apply to the Registrar for directions.