Company lists · Data refreshed September 2026

Top 25 International patent law firms based in Canada

Name: International patent law firms based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 129 companies tracked

RevenueBase identified 129 company matches for international patent law firms associated with Canada as of September 2026 and tracks 1,630 professional contacts across them, including 871 with verified work emails and 114 with mobile numbers. Toronto is the largest hub.

This list covers company matches for international patent law firms associated with Canada, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 4, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 4, 2026 How this list was built

129Companies

1,630Contacts tracked

871Verified emails

114Mobile numbers

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The 25 largest international patent law firms based in Canada

Ranked by team size

Top 25 of 129 company matches for international patent law firms based in Canada, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 4, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Smart & Biggar	Exact match	Ottawa, ON, CanadaHQ recorded Sep 4, 2026	501-1,000	517 contacts →
	Exact match “Smart & Biggar is widely recognized as Canada’s leading firm for intellectual property, and with over 180 lawyers, patent agents and trademark agents.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
2	ROBIC	Exact match	Montréal, QC, CanadaHQ recorded Sep 4, 2026	201-500	189 contacts →
	Exact match “Plus de 130 ans d'excellence ROBIC est un cabinet multidisciplinaire de renommée internationale regroupant des professionnels aux compétences variées incluant des avocats, des…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
3	MBM Intellectual Property LAW LLP	Exact match	Ottawa, ON, CanadaHQ recorded Sep 4, 2026	51-200	129 contacts →
	Exact match “MBM Intellectual Property Law is a dynamic and progressive law firm that practices exclusively in the area of intellectual property (IP) with offices throughout Canada.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
4	Oyen Wiggs Green & Mutala LLP	Exact match	Vancouver, BC, CanadaHQ recorded Sep 4, 2026	11-50	50 contacts →
	Exact match “Established in 1977, Oyen Wiggs is a Vancouver-based independent intellectual property boutique law firm.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
5	Gilbert's LLP	Exact match	Toronto, ON, CanadaHQ recorded Sep 4, 2026	11-50	33 contacts →
	Exact match “Gilbert's LLP is an agile, energetic law firm with an astonishing track record.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
6	Riches, Mckenzie & Herbert LLP	Exact match	Toronto, ON, CanadaHQ recorded Sep 4, 2026	11-50	26 contacts →
	Exact match “Founded in 1887 and headquartered in Toronto, Canada, the boutique law firm of Riches, McKenzie & Herbert LLP is one of Canada’s oldest firms, practising solely in the field of…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
7	Dipchand LLP	Exact match	Toronto, ON, CanadaHQ recorded Sep 4, 2026	11-50	24 contacts →
	Exact match “Dipchand LLP is a law firm of dedicated, passionate lawyers with exceptional business insight focused on intellectual property, corporate/commercial and franchise law, as well as…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
8	Aird & Mcburney LP	Exact match	Toronto, ON, CanadaHQ recorded Sep 4, 2026	11-50	20 contacts →
	Exact match “The combined intellectual property team of Aird & McBurney LP and Aird & Berlis LLP brings together patent and trademark agents and lawyers who secure Canadian and worldwide…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
9	Brion Raffoul LLP	Exact match	Ottawa, ON, CanadaHQ recorded Sep 4, 2026	11-50	17 contacts →
	Exact match “BRION RAFFOUL LLP is a premier Canadian IP boutique firm.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
10	Goudreau Gage Dubuc Maintenant NOW Lavery Avocats	Exact match	Montréal, QC, CanadaHQ recorded Sep 4, 2026	201-500	17 contacts →
	Exact match “A Home For Your Ideas ® Goudreau Gage Dubuc (GGD) is one of Canada's most reputable intellectual property firms.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
11	Cpst Intellectual Property	Exact match	Toronto, ON, CanadaHQ recorded Sep 4, 2026	11-50	16 contacts →
	Exact match “With almost 100 years of combined experience among its founders, CPST focuses on providing the highest standard of client service and advice, always informed by the business…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
12	Kirby Eades Gale Baker	Exact match	Ottawa, ON, CanadaHQ recorded Sep 4, 2026	11-50	14 contacts →
	Exact match “Founded in 1959 by Peter Kirby our firm is home to a team of highly qualified professionals who focus entirely upon intellectual property.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
13	Macrae & CO	Exact match	Ottawa, CanadaHQ recorded Sep 4, 2026	11-50	14 contacts →
	Exact match “Founded in 1934 by Alex E.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
14	Affilia Legal	Exact match	Montreal, QC, CanadaHQ recorded Sep 4, 2026	1-10	14 contacts →
	Exact match “A renowned firm specializing in business law and international trade, Affilia Legal LLP, comprehensively addresses the legal service needs of internationally oriented businesses.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
15	Aventum IP LAW LLP	Exact match	Ottawa, ON, CanadaHQ recorded Sep 4, 2026	11-50	14 contacts →
	Exact match “Aventum IP Law LLP (formerly Shapiro Cohen LLP) is an intellectual property firm located in the high-tech hub of Ottawa, Ontario.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
16	PNK Piasetzki Nenniger Kvas LLP	Exact match	Toronto, ON, CanadaHQ recorded Sep 4, 2026	11-50	13 contacts →
	Exact match “PNK Law LLP has been practicing exclusively in the area of intellectual property law for 30 years.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
17	Heer LAW	Exact match	Toronto, ON, CanadaHQ recorded Sep 4, 2026	11-50	13 contacts →
	Exact match “We help businesses reach their full potential through effective acquisition, management, use and enforcement of intellectual property rights.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
18	Nexus LAW Group LLP	Exact match	Vancouver, BC, CanadaHQ recorded Sep 4, 2026	11-50	13 contacts →
	Exact match “Nexus Law Group LLP is an intellectual property law firm located in Vancouver and Victoria, Canada.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
19	Brunet & CO	Exact match	London, ON, CanadaHQ recorded Sep 4, 2026	1-10	11 contacts →
	Exact match “Brunet & Co.(aka BrunetCo) is a Canadian intellectual property firm serving both foreign and Canadian domestic markets.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
20	Aitken Klee LLP	Exact match	Ottawa, ON, CanadaHQ recorded Sep 4, 2026	11-50	11 contacts →
	Exact match “Aitken Klee specializes in complex intellectual property litigation.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
21	Belmore Neidrauer LLP	Exact match	Toronto, ON, CanadaHQ recorded Sep 4, 2026	11-50	10 contacts →
	Exact match “Belmore Neidrauer excels in IP litigation.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
22	Oziel LAW	Exact match	Toronto, ON, CanadaHQ recorded Sep 4, 2026	11-50	10 contacts →
	Exact match “Oziel Law is an entrepreneurial law firm which provides corporate and business law, computer and technology law, intellectual property (IP) law and contract drafting legal…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
23	Ollip P.C	Exact match	Ottawa, ON, CanadaHQ recorded Sep 4, 2026	1-10	10 contacts →
	Exact match “Protecting IP Assets in Canada & Around the World If you are a brand or technology owner, you don’t have to be told about the value of protecting and enforcing your assets.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
24	Rowand LLP	Exact match	Toronto, ON, CanadaHQ recorded Sep 4, 2026	11-50	9 contacts →
	Exact match “Rowand LLP was established to provide practical and valuable intellectual property services for entrepreneurs and established companies working at the leading edge of technology.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
25	Anglehart ET AL	Exact match	Montreal, QC, CanadaHQ recorded Sep 4, 2026	1-10	9 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “international patent law firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 129 international patent law firms based in Canada

See the full list, filter by size, metro and specialty, and access 871 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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International patent law firms based in Canada at a glance

As of Sep 4, 2026

53.4%Verified-email coverage

7.0%Mobile-number coverage

12.6Average contacts per company

1-10Median size (employees)

31.8%Largest-city concentration · Toronto

Sep 4, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

00–30

5531–60

46461–90

35090–180

2180+

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Canada whose business descriptions match “international patent law firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 871 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 4, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

International patent law firms by metro

International patent law firms in Toronto41

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “international patent law firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many international patent law firms are there based in Canada?

RevenueBase identified 129 company matches for international patent law firms associated with Canada as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Smart & Biggar tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most international patent law firms?

Toronto leads with 41 company records, followed by Ottawa (18) and Montreal (15).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 871 professional contacts with verified work emails tracked across these 129 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 4, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.