Company lists · Data refreshed September 2026

Top 25 Patent infringement lawyers worldwide

RevenueBase identified 2,674 company matches for patent infringement lawyers worldwide as of September 2026 and tracks 38,184 professional contacts across them, including 17,228 with verified work emails. The United States is the largest market and New York the largest hub.

This list covers company matches for patent infringement lawyers worldwide, 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 20, 2026. Country and city lists for patent infringement lawyers follow the table.

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 20, 2026 How this list was built
2,674Companies
38,184Contacts tracked
17,228Verified emails
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The 25 largest patent infringement lawyers worldwide

Ranked by team size
Top 25 of 2,674 company matches for patent infringement lawyers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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 matchBoston, MA, United StatesHQ recorded Sep 20, 20261,001-5,0001,167 contacts →

Exact match

“As the leading intellectual property law firm, we help innovators change the world through our unmatched litigation, prosecution, and post-grant experience across venues and…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchWashington, DC, United StatesHQ recorded Sep 20, 2026501-1,000936 contacts →

Exact match

“When your most valuable assets are ideas, innovation, and brand-you need the best.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchLos Altos, CA, United StatesHQ recorded Sep 20, 2026501-1,000754 contacts →

Exact match

“Since 2004, MaxVal has helped the world's most innovative organizations capitalize on their intellectual property by being different from the legacy IP solution providers.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchIrvine, CA, United StatesHQ recorded Sep 20, 2026501-1,000606 contacts →

Exact match

“Knobbe Martens protects the ideas that drive innovation and propel our world forward.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 20, 2026501-1,000573 contacts →

Exact match

“We’re true specialists – focusing on IP and IP alone.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchOttawa, ON, CanadaHQ recorded Sep 20, 2026501-1,000521 contacts →

Exact match

“Smart & Biggar is a Canadian intellectual property law firm.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchSeattle, WA, United StatesHQ recorded Sep 20, 2026501-1,000488 contacts →

Exact match

“Sagacious IP is the World’s LARGEST IP research firm that reliably supports the worldwide IP community including Large Corporations, Small & Mid-size Corporations, IP law firms…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchWashington, DC, United StatesHQ recorded Sep 20, 2026201-500468 contacts →

Exact match

“Sterne, Kessler, Goldstein & Fox is a full-service intellectual property law firm that provides innovative solutions tailored to your business and industry.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchGurugram, IndiaHQ recorded Sep 20, 2026201-500454 contacts →

Exact match

“K&S Partners is a leading intellectual property law firm in India, offering a full range of IP management services to clients worldwide, including Fortune 500 companies.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchBoston, MA, United StatesHQ recorded Sep 20, 2026201-500428 contacts →

Exact match

“Wolf, Greenfield & Sacks, P.C.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchMinneapolis, MN, United StatesHQ recorded Sep 20, 2026201-500317 contacts →

Exact match

“An intellectual property law firm at the leading edge of patent, trademark and copyright law, licensing agreements, trade secret litigation, and more, expect a unique combination…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchChicago, IL, United StatesHQ recorded Sep 20, 2026201-500288 contacts →

Exact match

“For more than 100 years Banner Witcoff has provided sound protection and inventive intellectual property solutions for some of the world’s most innovative organizations.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchBloomfield Hills, MI, United StatesHQ recorded Sep 20, 2026201-500266 contacts →

Exact match

“Harness IP’s team of patent and trademark attorneys serve clients in all areas of intellectual property law.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchLos Angeles, CA, United StatesHQ recorded Sep 20, 2026201-500258 contacts →

Exact match

“Irell & Manella LLP is a law firm focused on complex commercial and IP litigation.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchNew York, NY, United StatesHQ recorded Sep 20, 2026201-500242 contacts →

Exact match

“Effectual Services is a well established and fast growing patent and legal support services company having experience and expertise in providing patent and legal services.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchMunich, GermanyHQ recorded Sep 20, 2026201-500241 contacts →

Exact match

“HOFFMANN EITLE is one of the largest intellectual property law firms in Europe.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchNew Delhi, IndiaHQ recorded Sep 20, 2026201-500227 contacts →

Exact match

“S.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 20, 2026201-500223 contacts →

Exact match

“EIP is a leading intellectual property law firm, trusted by businesses worldwide to turn innovation into competitive advantage.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchHartford, CT, United StatesHQ recorded Sep 20, 2026201-500222 contacts →

Exact match

“Cantor Colburn LLP is one of the largest intellectual property specialty law firms in the country, providing clients worldwide with the complete range of IP legal services…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Sep 20, 2026201-500220 contacts →

Exact match

“J A Kemp is a firm packed with patent and trade mark attorneys at the top of their game, renowned for their technical excellence, human engagement and trusted advice.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchChicago, IL, United StatesHQ recorded Sep 20, 202651-200213 contacts →

Exact match

“Marshall, Gerstein & Borun LLP has one focus - intellectual property law.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchWashington, DC, United StatesHQ recorded Sep 20, 2026201-500211 contacts →

Exact match

“From Sughrue’s inception in 1957 to the present, we have focused solely on intellectual property law.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchNoida, IndiaHQ recorded Sep 20, 2026201-500205 contacts →

Exact match

“Welcome to Ennoble IP An award-winning techno legal KPO and Intellectual Property (IP) platform that allows innovators, researchers, investors, entrepreneurs, and academia to…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchKarachi, PakistanHQ recorded Sep 20, 202651-200201 contacts →

Exact match

“Ali & Associates is a leading Pakistani law firm with offices at Karachi, Lahore, Islamabad, and a correspondence office in Washington DC.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchBeijing, United StatesHQ recorded Sep 20, 2026201-500199 contacts →

Exact match

“Founded in 1957, we are the oldest and one of the largest full-service intellectual property law firms in China.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 2,674 patent infringement lawyers worldwide

See the full list, filter by size, metro and specialty, and access 17,228 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Patent infringement lawyers worldwide at a glance

As of Sep 20, 2026
45.1%Verified-email coverage
14.3Average contacts per company
1-10Median size (employees)
2.3%Largest-city concentration · New York
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
1,512
11-50
836
51-200
241
201-500
58
501-1,000
17
1,001-5,000
3
10001+
1

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for patent infringement lawyers are linked below.
What qualifies
Company records worldwide whose business descriptions match “patent infringement lawyers” 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. 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 17,228 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 20, 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.

Patent infringement lawyers by location

17 lists · largest first

Every Patent infringement lawyers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “patent infringement lawyers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many patent infringement lawyers are there worldwide?

RevenueBase identified 2,674 company matches for patent infringement lawyers worldwide 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?

Fish & Richardson P.C tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most patent infringement lawyers?

The United States leads with 1,241 companies, followed by Germany (221) and India (162). Every patent infringement lawyers list by country and city is linked on this page.

Which city has the most patent infringement lawyers?

New York leads with 62 company records, followed by Washington (54) and Chicago (49).

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 17,228 professional contacts with verified work emails tracked across these 2,674 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 20, 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.