Company lists · Data refreshed November 2026

Top 25 Antitrust litigation firms based in Canada

RevenueBase identified 40 company matches for antitrust litigation firms associated with Canada as of November 2026 and tracks 460 professional contacts across them, including 325 with verified work emails. Toronto is the largest hub.

This list covers company matches for antitrust litigation 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 November 6, 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 Nov 6, 2026 How this list was built
40Companies
460Contacts tracked
325Verified emails
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The 25 largest antitrust litigation firms based in Canada

Ranked by team size
Top 25 of 40 company matches for antitrust litigation firms based in Canada, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchToronto, ON, CanadaHQ recorded Nov 6, 202611-5071 contacts →

Exact match

“Lax O’Sullivan Lisus Gottlieb LLP is Canada’s preeminent business litigation firm.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchCalgary, AB, CanadaHQ recorded Nov 6, 202651-20055 contacts →

Exact match

“JSS Barristers acts for substantial corporate entities as well as individuals, but takes pride in its advocacy on behalf of each one of its clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchToronto, ON, CanadaHQ recorded Nov 6, 202611-5031 contacts →

Exact match

“Gilbert's LLP is an agile, energetic law firm with an astonishing track record.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchVancouver, BC, CanadaHQ recorded Nov 6, 202611-5030 contacts →

Exact match

“Class action litigation is a highly specialized and extremely diverse field of law in Canada, and Klein Lawyers is recognized as one of country’s leading class action firms.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchToronto, ON, CanadaHQ recorded Nov 6, 202611-5029 contacts →

Exact match

“AGB is a leading Toronto-based litigation boutique, trusted by clients Canada-wide and internationally with their commercial, civil, administrative, and regulatory litigation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchToronto, ON, CanadaHQ recorded Nov 6, 202611-5027 contacts →

Exact match

“Polley Faith LLP is one of Toronto's most respected litigation firms.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchToronto, ON, CanadaHQ recorded Nov 6, 202611-5021 contacts →

Exact match

“We are trial lawyers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchToronto, ON, CanadaHQ recorded Nov 6, 202611-5020 contacts →

Exact match

“Evangelista, Barristers & Solicitors is recognized as a leader in litigation, advocacy and risk management.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchToronto, ON, CanadaHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“Wright Henry provides agile, thoughtful and effective legal representation to labour-side clients in high-stakes labour and employment disputes.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchMontréal, CanadaHQ recorded Nov 6, 20261-1016 contacts →

Exact match

“TJL represents its clients with courage, integrity, creativity, tenacity and compassion.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchLangley, BC, CanadaHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“Magellan Lawyer is an innovative, client-centric and forward-thinking law corporation located in Langley B.C, serving clients in the Fraser Valley and throughout the Lower…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchToronto, ON, CanadaHQ recorded Nov 6, 20261-1012 contacts →

Exact match

“Milosevic & Associates is a boutique litigation law firm located in downtown Toronto.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchSudbury, ON, CanadaHQ recorded Nov 6, 20261-109 contacts →

Exact match

“Northern Law LLP is a law firm committed to advocating for the rights of our clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchToronto, ON, CanadaHQ recorded Nov 6, 202611-509 contacts →

Exact match

“Orr Taylor LLP is a business litigation firm that handles significant class actions and complex litigation matters.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchLondon, ON, CanadaHQ recorded Nov 6, 20261-108 contacts →

Exact match

“A team of dedicated Canadian lawyers specializing exclusively in class action litigation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchToronto, ON, CanadaHQ recorded Nov 6, 202611-507 contacts →

Exact match

“Acting for a broad range of clients, primarily on the plaintiff side, our practice focus is complex, high value class actions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchToronto, ON, CanadaHQ recorded Nov 6, 20261-106 contacts →

Exact match

“Goldbloom Ross Cunningham LLP defends people and corporations facing investigation and prosecution of all kinds.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchOttawa, ON, CanadaHQ recorded Nov 6, 20261-105 contacts →

Exact match

“A.P.Strom and Associates specializes in organizing litigation by serving as litigation solicitors for businesses and individuals.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchToronto, ON, CanadaHQ recorded Nov 6, 20261-104 contacts →

Exact match

“KND Complex Litigation is a boutique Toronto law firm dedicated to protecting the interests of investors and consumers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchMontreal, QC, CanadaHQ recorded Nov 6, 20261-104 contacts →

Exact match

“TRANSPARENT, TRUSTWORTHY, TENACIOUS - that's just the tip of the iceberg.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchSaint John, NB, CanadaHQ recorded Nov 6, 20261-104 contacts →

Exact match

“We Create a Personalized Experience to Confront Our Clients’ Challenges as if They Were Our Own.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchOttawa, ON, CanadaHQ recorded Nov 6, 20261-104 contacts →

Exact match

“At Sevigny Dupuis, we recognize that workplace disputes come in all shapes and sizes and that effective legal representation requires an approach that is specifically tailored to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchToronto, ON, CanadaHQ recorded Nov 6, 20261-103 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchToronto, ON, CanadaHQ recorded Nov 6, 20261-103 contacts →

Exact match

“Rosemount Law specializes in shareholder disputes, contract litigation and cross-border litigation, offering expert legal services for complex legal challenges in these areas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchToronto, ON, CanadaHQ recorded Nov 6, 20261-103 contacts →

Exact match

“Toronto-based commercial and regulatory litigation”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 40 antitrust litigation firms based in Canada

See the full list, filter by size, metro and specialty, and access 325 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Antitrust litigation firms based in Canada at a glance

As of Nov 6, 2026
70.7%Verified-email coverage
11.5Average contacts per company
1-10Median size (employees)
57.5%Largest-city concentration · Toronto
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
25
11-50
13
51-200
1

Email recency for this list is measured worldwide rather than for Canada, so it is reported there. Company counts and contact totals on this page are exact for Canada, over 40 companies.

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 “antitrust litigation 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 325 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 November 6, 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.

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 “antitrust litigation firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many antitrust litigation firms are there based in Canada?

RevenueBase identified 40 company matches for antitrust litigation firms associated with Canada as of November 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?

LAX O'sullivan Lisus Gottlieb LLP tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most antitrust litigation firms?

Toronto leads with 23 company records, followed by Montreal (3) and Ottawa (2).

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 325 professional contacts with verified work emails tracked across these 40 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 November 6, 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.