Required opposition form

(1) When a person who opposes an application for the registration of a mark wishes to exercise his right under section 16 of the Act to oppose the application, he may so inform the Registrar by submitting a notice of opposition in Form No. 6, together with the prescribed fee. (2) If one of the reasons for the opponent’s objection to the registration of the mark is that it resembles a mark already on the register, the number and registration date of that mark must be specified in the notice of opposition.