Company lists · Data refreshed September 2026
Top 25 Trademark law firms based in the United States
RevenueBase identified 2,455 trademark law firms headquartered in the United States as of September 2026 and tracks 29,310 professional contacts across them, including 15,690 with verified work emails and 15,206 with mobile numbers. New York is the largest hub.
This list covers trademark law firms headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 6, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.
The 25 largest trademark law firms based in the United States
Ranked by team size| # | Company | RevenueBase Smart Search | Contacts | ||
|---|---|---|---|---|---|
| 1 | Partial evidence | 1,167 contacts → | |||
“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…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | Indirect evidence | 936 contacts → | |||
“When your most valuable assets are ideas, innovation, and brand-you need the best.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | Partial evidence | 669 contacts → | |||
“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…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | Indirect evidence | 606 contacts → | |||
“Knobbe Martens protects the ideas that drive innovation and propel our world forward.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | Partial evidence | 488 contacts → | |||
“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…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | Partial evidence | 468 contacts → | |||
“Sterne, Kessler, Goldstein & Fox is a full-service intellectual property law firm that provides innovative solutions tailored to your business and industry.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | Indirect evidence | 428 contacts → | |||
“Wolf, Greenfield & Sacks, P.C.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | Indirect evidence | 387 contacts → | |||
“Over 45 years providing superior legal services to clients of every size throughout the Midwest and across the country, Sandberg Phoenix is consistently rated as one of St.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | Strong evidence | 317 contacts → | |||
“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…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | Partial evidence | 307 contacts → | |||
“From our founding above a blacksmith shop in 1869 to the full-service law practice we’ve become in the 156 years since, we have consistently sought to earn each client’s trust by…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | Indirect evidence | 288 contacts → | |||
“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.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | Indirect evidence | 283 contacts → | |||
“Lathrop Gage clients are the backbone of our economy.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | Partial evidence | 275 contacts → | |||
“SLW is a boutique law firm dedicated to protecting intellectual property.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | Strong evidence | 266 contacts → | |||
“Harness IP’s team of patent and trademark attorneys serve clients in all areas of intellectual property law.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | Partial evidence | 258 contacts → | |||
“Irell & Manella LLP is a law firm focused on complex commercial and IP litigation.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | Indirect evidence | 242 contacts → | |||
“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.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | Partial evidence | 222 contacts → | |||
“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…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | Partial evidence | 213 contacts → | |||
“Marshall, Gerstein & Borun LLP has one focus - intellectual property law.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | Partial evidence | 211 contacts → | |||
“From Sughrue’s inception in 1957 to the present, we have focused solely on intellectual property law.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | Partial evidence | 182 contacts → | |||
“Fross Zelnick is consistently recognized by clients and peers as one of the top IP law firms in the world.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | Partial evidence | 181 contacts → | |||
“Formed in 1984, Dority & Manning is a full-service intellectual property law firm.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | Partial evidence | 180 contacts → | |||
“Munck Wilson Mandala is a technology-focused law firm with offices in Dallas, Austin, Houston, Waco, Texas; Los Angeles, California; and South Florida.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | Indirect evidence | 177 contacts → | |||
“Formidable lawyers deeply committed to anticipating the needs of our clients through innovation and superior client service.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | Partial evidence | 172 contacts → | |||
“Glaser Weil is a premier law firm headquartered in Los Angeles with outstanding experience and market-leading successes in litigation, corporate, intellectual property and real…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | Indirect evidence | 165 contacts → | |||
“The most effective IP solutions come from putting great minds together-yours and ours.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: trademark law firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names trademark law firms.
- Partial evidence
- Its own public description names part of trademark law firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name trademark law firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 2,455 trademark law firms based in the United States
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Trademark law firms based in the United States at a glance
As of Sep 6, 2026Companies by employee count
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among trademark law firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “trademark law firms”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names trademark law firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among trademark law firms, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 15,690 across the full list. 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 6, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Trademark law firms by metro
- Trademark law firms in New York189
- Trademark law firms in Chicago86
- Trademark law firms in Washington83
- Trademark law firms in Los Angeles80
- Trademark law firms in Atlanta53
- Trademark law firms in Houston52
- Trademark law firms in Dallas48
- Trademark law firms in San Diego45
- Trademark law firms in Austin43
- Trademark law firms in Miami41
- Trademark law firms in San Francisco36
- Trademark law firms in Irvine35
- Trademark law firms in Seattle33
- Trademark law firms in Minneapolis30
- Trademark law firms in Alexandria26
- Trademark law firms in Portland25
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names trademark law firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many trademark law firms are there based in the United States?
RevenueBase identified 2,455 trademark law firms headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Fish & Richardson P.C, headquartered in Boston, tops this list with the largest team on record.
Which city has the most trademark law firms?
New York leads with 189 headquartered companies, followed by Chicago (86) and Washington (83).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 15,690 verified decision-maker contacts tracked across these 2,455 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 6, 2026.
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Trademark law firms by geography
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- Trademark law firms based in the United Kingdom
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- Trademark law firms based in Spain
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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 Smart Search, 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.