Cassan MacLean
- Attorneys and patent and trademark agents based in Ottawa, working in all areas of intellectual property rights, especially related to telecommunications/electronics and biotechnology.
- http://www.cassanmaclean.com

Tapas K. Pain
- Offering services for inventors, from offices in Vaughan, Ontario.
- http://www.trademarkregistration.ca/

Piasetzki & Nenniger
- An Intellectual Property law firm located in Toronto specializing in patents, trademarks, copyrights and related rights.
- http://pia-nenn.ca/

Odutola Law Chambers
- Ottawa law firm emphasizing business law, e-commerce, and intellectual property.
- http://www.odutola.com

Law Office of Philip B. Kerr
- Ottawa, Ontario firm practicing patent, trademark, copyright and computer law.
- http://www.trytel.com/~pbkerr/

Kappel Ludlow
- Patent and trademark agents located in Toronto, Ontario.
- http://www.kappelludlow.com/

Hitchman & Sprigings
- Law firm located in Toronto, Ontario, specializing in intellectual property and technology law
- http://www.hitchman.com/

Dimock Stratton LLP
- Toronto firm focusing on intellectual property law.
- http://www.dimock.com

Bereskin & Parr
- Intellectual property law specialists, with offices in Toronto.
- http://www.bereskinparr.com

Armstrong & Associates
- International intellectual property law firm based in Cambridge, Ontario, offering information, downloadable forms, and fee schedules.
- http://www.canpat.com/