Opposition Proceedings – Table of contents - Canadian Intellectual Property Office

This information is to be considered solely as a guide and should not be quoted as or considered to be a legal authority. Users of this information must also consult the Trademarks Act, the Trademarks Regulations and in decisions of the courts interpreting them. In the event of any discrepancy between the legislation and the information contained herein, the legislation will apply.

An opposition is a proceeding before the Registrar of Trademarks (the Registrar) whereby somebody (the opponent) objects to the registration of a trademark in Canada.

A successful opposition prevents a trademark application from issuing to registration. It does not prevent an applicant from using its mark in Canada; only the courts can prohibit a party from using a mark. Read more.

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