Trademarks Opposition Board

The Trademarks Opposition Board is comprised of a Chair, Members of the Board and Hearing officers who render quasi-judicial decisions in Opposition and Section 45 proceedings. Read more

Opposition

See all information about Opposition

Section 45

See all information about Section 45

Upcoming Hearings

Upcoming Hearings

E-Services

Database Search

Decisions

Trademarks Opposition Board final decisions

Notices

See TMOB notices

Need assistance?

Obtain professional assistance from a Trademarks Agent in your region.

Contact Us

For general enquiries, call our Client Service Centre at 1-866-997-1936 (toll-free) or 819-934-0544 (international).

Important: When writing to TMOB, you must indicate:

  • Attention: Oppositions or
  • Attention: Section 45

Facsimile: 819-953-CIPO (2476)

Mail:

Trademarks Opposition Board
Canadian Intellectual Property Office
Industry Canada
Place du Portage, Phase 1
50 Victoria Street
Gatineau, QC K1A 0C9