Does Riches, McKenzie & Herbert only work with companies, or can an individual inventor hire the firm too?

Both. The firm's clients include individual inventors and entrepreneurs alongside universities, research institutes, and businesses ranging from small companies to Fortune 100 corporations.

Can the firm register a Canadian trademark for a business based outside Canada?

Yes. The firm acts as a Canadian trademark agent for foreign clients and their attorneys, and it also draws on a network of foreign associates to pursue trademark protection for Canadian clients abroad.

What happens if a registered trademark in Canada isn't used?

The firm's trademark page notes that a Canadian registration can become vulnerable to a non-use cancellation proceeding starting three years after registration. This is general information, not legal advice.

Does Riches, McKenzie & Herbert handle patent disputes, or only patent applications?

Both. Beyond preparing and prosecuting patent applications with the Canadian Intellectual Property Office, the firm's litigation practice pursues enforcement through negotiation, cease and desist letters, and court proceedings, and its lawyers appear before the Federal Court of Canada and the provincial courts.

Where is the office and can it be reached by transit?

The office is on the 18th floor of 2 Bloor Street East in Toronto, in a tower connected to the Bloor-Yonge subway station.

Riches, McKenzie & Herbert LLP | LawOnline Directory

About Riches, McKenzie & Herbert LLP

Riches, McKenzie & Herbert LLP is a Toronto firm that practises exclusively in intellectual property law. It was founded in 1887 by patent attorney Charles H. Riches, making it one of the earliest law firms in the Dominion of Canada and one of the country's oldest firms still practising solely in IP. Its lawyers and trademark agents handle patents, trademarks, copyright, industrial designs, IP litigation, and IP licensing agreements. Several of them pair an engineering or science degree, in fields such as mechanical and chemical engineering, biochemistry, computer technology, and geology, with a law degree, so they can work directly with inventors on the technical substance of a patent application rather than relying only on outside experts.

The firm's clients range from individual inventors and entrepreneurs to universities, research institutes, small and mid-sized businesses, Fortune 100 companies, and other law firms that refer Canadian IP work to it. Its lawyers appear before the Federal Court of Canada and the provincial courts, as well as administrative tribunals, and the firm works with a network of foreign associates to pursue patent and trademark protection in the United States, Europe, and Asia on behalf of Canadian clients. Riches, McKenzie & Herbert's office is on the 18th floor of 2 Bloor Street East in downtown Toronto.

Practice areas

Intellectual Property

Good to know

Wheelchair accessible A calendar with a checkmark beside a clock

By appointment

Lawyers 12

Certified Specialists

A designation granted by the Law Society of Ontario, not a self-declared area of focus.

Dale E. SchlosserIntellectual Property Law (Patent, Trademark & Copyright), Law Society of Ontario

This firm’s lawyers at a glance

Called to the bar: 1990–2025 · median 14 years in practice 11 of 12 lawyers
Law schools: University of Ottawa (2), Osgoode Hall Law School, Osgoode Law School, Queen's University, Shanghai University of Finance and Economics, University of British Columbia and 4 more 11 of 12 lawyers

Who handles what

Intellectual Property
Dale E. Schlosser, Elizabeth Hugh Talluri, Gary M. Travis, Jeffrey Pervanas, Julianna Felendzer, Kevin Andrew Voth, Marta Tandori Cheng, Michael Adams, Michael Yun, Ryan Sampson, Thomas McConnell, Zoe Huang

The neighbourhood

The firm's office sits inside 2 Bloor Street East, a 35 storey tower built in the early 1970s under the name Hudson's Bay Centre before it was renamed. The tower is connected to Bloor-Yonge subway station, which the TTC describes as the busiest station on its system and the transfer point between its two main subway lines, so clients coming from almost anywhere in the city can reach the office without driving downtown. Yonge and Bloor is one of Toronto's principal commercial crossroads, and it puts a firm built around patent drafting and trademark work in the same district as many of the businesses, universities, and research institutes it represents.

Frequently asked questions

Does Riches, McKenzie & Herbert only work with companies, or can an individual inventor hire the firm too?: Both. The firm's clients include individual inventors and entrepreneurs alongside universities, research institutes, and businesses ranging from small companies to Fortune 100 corporations.
Can the firm register a Canadian trademark for a business based outside Canada?: Yes. The firm acts as a Canadian trademark agent for foreign clients and their attorneys, and it also draws on a network of foreign associates to pursue trademark protection for Canadian clients abroad.
What happens if a registered trademark in Canada isn't used?: The firm's trademark page notes that a Canadian registration can become vulnerable to a non-use cancellation proceeding starting three years after registration. This is general information, not legal advice.
Does Riches, McKenzie & Herbert handle patent disputes, or only patent applications?: Both. Beyond preparing and prosecuting patent applications with the Canadian Intellectual Property Office, the firm's litigation practice pursues enforcement through negotiation, cease and desist letters, and court proceedings, and its lawyers appear before the Federal Court of Canada and the provincial courts.
How long has the firm been practising intellectual property law?: Riches, McKenzie & Herbert was founded in 1887 by patent attorney Charles H. Riches, one of the earliest law firms in the Dominion of Canada, and it's one of Canada's oldest firms still practising solely in intellectual property law.
Where is the office and can it be reached by transit?: The office is on the 18th floor of 2 Bloor Street East in Toronto, in a tower connected to the Bloor-Yonge subway station.

Where to find them

2 Bloor Street East, Suite 1800, Toronto, Canada M4W 3J5 · 416-961-5000

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Listing compiled from the firm’s public website in August 2026. Verify licence status in the Law Society of Ontario directory ↗