Company lists · Data refreshed October 2026

Top 25 International patent law firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Oct 1, 2026 9,163 companies tracked

RevenueBase identified 9,163 company matches for international patent law firms worldwide as of October 2026 and tracks 135,804 professional contacts across them, including 51,967 with verified work emails. The United States is the largest market and Paris the largest hub.

This list covers company matches for international patent law firms 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 October 1, 2026. Country and city lists for international patent law firms 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 Oct 1, 2026 How this list was built

9,163Companies

135,804Contacts tracked

51,967Verified emails

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The 25 largest international patent law firms worldwide

Ranked by team size

Top 25 of 9,163 company matches for international patent law firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 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	Cooley LLP	Exact match	Palo Alto, CA, United StatesHQ recorded Oct 1, 2026	1,001-5,000	3,341 contacts →
	Exact match “Clients partner with Cooley on transformative deals, complex IP and regulatory matters, and high-stakes litigation.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2	Perkins Coie	Exact match	Seattle, WA, United StatesHQ recorded Oct 1, 2026	1,001-5,000	2,746 contacts →
	Exact match “Perkins Coie has combined with Ashurst to form Ashurst Perkins Coie.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3	Crowell & Moring	Exact match	Washington, DC, United StatesHQ recorded Oct 1, 2026	1,001-5,000	1,602 contacts →
	Exact match “Crowell & Moring is an international law firm with operations in the United States, Europe, MENA, and Asia.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4	Tozzinifreire Advogados	Exact match	São Paulo, BrazilHQ recorded Oct 1, 2026	1,001-5,000	1,580 contacts →
	Exact match “TozziniFreire is one of the leading legal services organizations in Latin America, operating in all areas of Business Law and with a significant track record in serving national…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5	Fish & Richardson P.C	Exact match	Boston, MA, United StatesHQ recorded Oct 1, 2026	1,001-5,000	1,167 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 · Oct 1, 2026 · View company records in RevenueBase
6	Finnegan, Henderson, Farabow, Garrett & Dunner, LLP	Exact match	Washington, DC, United StatesHQ recorded Oct 1, 2026	501-1,000	936 contacts →
	Exact match “When your most valuable assets are ideas, innovation, and brand-you need the best.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7	Adams & Adams	Exact match	Pretoria, South AfricaHQ recorded Oct 1, 2026	501-1,000	846 contacts →
	Exact match “Realise African Enterprise.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8	Dannemann Siemsen	Exact match	Rio De Janeiro, BrazilHQ recorded Oct 1, 2026	501-1,000	775 contacts →
	Exact match “Dannemann Siemsen is a Brazilian firm dedicated to Intellectual Property since 1900.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9	Maxval Group, INC	Exact match	Los Altos, CA, United StatesHQ recorded Oct 1, 2026	501-1,000	754 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 · Oct 1, 2026 · View company records in RevenueBase
10	Dennemeyer	Exact match	Howald, LuxembourgHQ recorded Oct 1, 2026	1,001-5,000	707 contacts →
	Exact match “The Dennemeyer Group offers high-quality services for the protection and management of Intellectual Property rights and is committed to being the first-choice partner for…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11	Marval O'farrell, Mairal	Exact match	Buenos Aires, ArgentinaHQ recorded Oct 1, 2026	501-1,000	688 contacts →
	Exact match “Fundada en 1923, Marval O’Farrell Mairal es la firma legal más grande de la Argentina, líder en el país y también en Latinoamérica.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12	Butler Snow LLP	Exact match	Ridgeland, MS, United StatesHQ recorded Oct 1, 2026	501-1,000	685 contacts →
	Exact match “With over 400 attorneys in offices in Albuquerque, Ambler (PA), Atlanta, Austin, Baton Rouge, Bethlehem (PA), Birmingham, Boston, Charleston, Dallas, Denver, Gulfport, Huntsville…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13	Honigman LLP	Exact match	Detroit, MI, United StatesHQ recorded Oct 1, 2026	501-1,000	669 contacts →
	Exact match “Honigman LLP is an Am Law 200 full-service, general business law firm with more than 400 attorneys counseling clients on complex issues across the country in Chicago, Michigan…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14	Knobbe Martens	Exact match	Irvine, CA, United StatesHQ recorded Oct 1, 2026	501-1,000	606 contacts →
	Exact match “Knobbe Martens protects the ideas that drive innovation and propel our world forward.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15	ROUSE	Exact match	London, United KingdomHQ recorded Oct 1, 2026	501-1,000	584 contacts →
	Exact match “Rouse was established in the UK in 1990 and is recognised as a global intellectual property (IP) leader operating as a collaborative network with more than people working out of…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16	Marks & Clerk	Exact match	London, United KingdomHQ recorded Oct 1, 2026	501-1,000	573 contacts →
	Exact match “We’re true specialists – focusing on IP and IP alone.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17	Eckert Seamans	Exact match	Pittsburgh, PA, United StatesHQ recorded Oct 1, 2026	501-1,000	570 contacts →
	Exact match “Eckert Seamans Cherin & Mellott LLC has lawyers in offices throughout the United States, including Harrisburg, Philadelphia, and Pittsburgh, Pennsylvania; Boston, Massachusetts…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18	Gorrissen Federspiel	Exact match	Copenhagen V, DenmarkHQ recorded Oct 1, 2026	501-1,000	559 contacts →
	Exact match “Gorrissen Federspiel is among the leading Danish law firms with distinguished international relations.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19	HGF Limited	Exact match	Leeds, United KingdomHQ recorded Oct 1, 2026	201-500	538 contacts →
	Exact match “HGF is one of Europe’s largest firms of Intellectual Property specialists.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20	Smart & Biggar	Exact match	Ottawa, ON, CanadaHQ recorded Oct 1, 2026	501-1,000	521 contacts →
	Exact match “Smart & Biggar is a Canadian intellectual property law firm.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21	Sagaciouselevate	Exact match	Seattle, WA, United StatesHQ recorded Oct 1, 2026	501-1,000	488 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 · Oct 1, 2026 · View company records in RevenueBase
22	Anand And Anand	Exact match	New Delhi, IndiaHQ recorded Oct 1, 2026	201-500	482 contacts →
	Exact match “Anand and Anand is a leading full-service intellectual property law firm, providing end-to-end legal solutions across all facets of intellectual property and allied practice areas.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
23	Tucker Ellis LLP	Exact match	Cleveland, OH, United StatesHQ recorded Oct 1, 2026	201-500	481 contacts →
	Exact match “Tucker Ellis LLP is a full-service law firm of more than 240 lawyers serving clients from “11 Long Hallways” nationwide: Atlanta, Chicago, Cleveland, Columbus, Los Angeles…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24	Sterne, Kessler, Goldstein & FOX	Exact match	Washington, DC, United StatesHQ recorded Oct 1, 2026	201-500	468 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 · Oct 1, 2026 · View company records in RevenueBase
25	K&s Partners	Exact match	Gurgaon, IndiaHQ recorded Oct 1, 2026	201-500	454 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 · Oct 1, 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 9,163 international patent law firms worldwide

See the full list, filter by size, metro and specialty, and access 51,967 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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International patent law firms worldwide at a glance

As of Oct 1, 2026

38.3%Verified-email coverage

14.8Average contacts per company

1-10Median size (employees)

2.0%Largest-city concentration · Paris

Oct 1, 2026Page data refreshed

Companies by employee count

1-10

5,534

11-50

2,675

51-200

676

201-500

184

501-1,000

1,001-5,000

10001+

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 international patent law firms are linked below.
What qualifies: Company records worldwide 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. 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 51,967 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 October 1, 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 location

81 lists · largest first

Every International patent law firms 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 “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 worldwide?

RevenueBase identified 9,163 company matches for international patent law firms worldwide as of October 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?

Cooley LLP tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most international patent law firms?

The United States leads with 1,889 companies, followed by India (761) and Germany (491). Every international patent law firms list by country and city is linked on this page.

Which city has the most international patent law firms?

Paris leads with 185 company records, followed by New Delhi (168) and Munich (158).

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 51,967 professional contacts with verified work emails tracked across these 9,163 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 October 1, 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.