Company lists · Data refreshed September 2026
Top 25 Intellectual property litigation firms based in New York, United States
RevenueBase identified 512 intellectual property litigation firms headquartered in New York, United States as of September 2026 and tracks 9,990 professional contacts across them, including 5,183 with verified work emails. New York is the largest hub.
This list covers intellectual property litigation firms headquartered in New York, 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 20, 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 intellectual property litigation firms based in New York, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 701 contacts → | ||||
Partial evidence “Clients turn to Epstein Becker Green for strategic counsel in employment and labor law, health care and life sciences, and complex litigation.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 690 contacts → | ||||
Indirect evidence “Kelley Drye is an AmLaw 200 law firm of more than 350 lawyers and other professionals practicing in New York, NY; Washington, D.C; Chicago, IL; Houston, TX, Los Angeles, CA; San…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 537 contacts → | ||||
Indirect evidence “A firm of internationally recognized trial lawyers, crisis managers, and strategic advisors known for our creative, aggressive, and efficient pursuit of success for our clients.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 513 contacts → | ||||
Indirect evidence “Cahill Gordon & Reindel LLP was founded in 1919 and quickly built a national reputation for excellence in the financial and corporate areas.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 247 contacts → | ||||
Indirect evidence “Davis+Gilbert helped guide the development of the marketing communications ecosystem over the past century.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 242 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 196 contacts → | ||||
Indirect evidence “A firm to turn to when all seems hopeless"-Chambers USA Axinn combines the skills, experience and dedication of the world's largest firms with the focus, responsiveness…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 186 contacts → | ||||
Indirect evidence “Founded over 40 years ago as a boutique law firm servicing the entertainment and arts communities in New York City, Frankfurt Kurnit has grown to become a full-service firm…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 183 contacts → | ||||
Indirect evidence “Ellenoff Grossman & Schole LLP is a New York City-based law firm comprised of over 125 professionals, offering its clients legal services in a broad range of business related…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 182 contacts → | ||||
Indirect evidence “Fross Zelnick is consistently recognized by clients and peers as one of the top IP law firms in the world.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 181 contacts → | ||||
Partial evidence “Selendy Gay's practice is dedicated to excellence in commercial litigation, investigations, appellate advocacy, and arbitration.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 159 contacts → | ||||
Partial evidence “Gallo Vitucci Klar LLP is a full service litigation firm consisting of more than 130 attorneys and having an extensive practice dedicated to providing experienced and innovative…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 140 contacts → | ||||
Strong evidence “Desmarais LLP is a leading intellectual property litigation firm with offices in New York, San Francisco, and Washington, D.C.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 135 contacts → | ||||
Strong evidence “As an enterprise grows, its need for intellectual property (IP) protection expands.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 132 contacts → | ||||
Indirect evidence “FIRM OVERVIEW: Olshan, a law firm based in New York, represents major businesses and entrepreneurs for their most significant transactions, problems and opportunities.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 117 contacts → | ||||
Strong evidence “Kenyon & Kenyon LLP is a leading intellectual property law firm whose sophisticated and business-oriented approach helps clients succeed with their intellectual property…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 100 contacts → | ||||
Strong evidence “HG Law LLP (formerly Haley Guiliano LLP) is an international intellectual property law firm specializing in patent law from offices in London, New York and Silicon Valley.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 94 contacts → | ||||
Strong evidence “We are a boutique full-service firm recognized worldwide in the areas of intellectual property law and litigation.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 88 contacts → | ||||
Indirect evidence “Dorf Nelson & Zauderer LLP is a national law firm with offices in New York, California, and New Jersey, representing corporations, executives, boards, private equity-backed…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 87 contacts → | ||||
Partial evidence “Pomerantz LLP is one of the nation’s foremost specialists in corporate, securities, antitrust, and ERISA class action litigation.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 85 contacts → | ||||
Strong evidence “Since 1953, Amster, Rothstein & Ebenstein LLP has focused exclusively on representing clients in all facets of intellectual property law both domestically and internationally.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 81 contacts → | ||||
Indirect evidence “For over 25 years, Haug Partners has provided synthesized multidisciplinary legal services for life science and technology businesses.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 79 contacts → | ||||
Indirect evidence “Siri & Glimstad LLP has offices across the country and represents individuals and corporations in federal and state courts nationwide.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 78 contacts → | ||||
Indirect evidence “Skarzynski Marick is a business law firm with extensive experience in insurance.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 78 contacts → | ||||
Indirect evidence “WHO WE ARE Abrams Garfinkel Margolis Bergson, LLP is a full-service law firm dedicated to smart, practical and cost-effective counsel.” Source: RevenueBase Database · checked Sep 20, 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: intellectual property litigation 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 intellectual property litigation firms.
- Partial evidence
- Its own public description names part of intellectual property litigation firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name intellectual property litigation 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 512 intellectual property litigation firms based in New York, United States
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Intellectual property litigation firms based in New York, United States at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for New York, so it is reported there. Company counts and contact totals on this page are exact for New York, over 512 companies.
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 intellectual property litigation 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 New York, United States whose own description of what they do matches “intellectual property litigation 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 intellectual property litigation 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 intellectual property litigation firms, and records with no verified work email. Companies headquartered outside New York 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, 5,183 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 20, 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.
Intellectual property litigation firms by metro in the United States
- Intellectual property litigation firms in New York512
- Intellectual property litigation firms in Los Angeles278
- Intellectual property litigation firms in Chicago242
- Intellectual property litigation firms in Houston211
- Intellectual property litigation firms in Dallas165
- Intellectual property litigation firms in Washington153
- Intellectual property litigation firms in Atlanta147
- Intellectual property litigation firms in San Diego129
- Intellectual property litigation firms in San Francisco128
- Intellectual property litigation firms in Miami121
- Intellectual property litigation firms in Austin106
- Intellectual property litigation firms in Boston95
- Intellectual property litigation firms in Irvine88
- Intellectual property litigation firms in Denver75
- Intellectual property litigation firms in Seattle73
- Intellectual property litigation firms in Minneapolis64
- Intellectual property litigation firms in Portland60
- Intellectual property litigation firms in Philadelphia59
- Intellectual property litigation firms in Tampa56
- Intellectual property litigation firms in Beverly Hills51
- Intellectual property litigation firms in Fort Lauderdale51
- Intellectual property litigation firms in Phoenix49
- Intellectual property litigation firms in Nashville47
- Intellectual property litigation firms in New Orleans46
- Intellectual property litigation firms in San Jose43
- Intellectual property litigation firms in Salt Lake City42
- Intellectual property litigation firms in Coral Gables39
- Intellectual property litigation firms in Alexandria35
- Intellectual property litigation firms in Birmingham35
- Intellectual property litigation firms in Newport Beach35
- Intellectual property litigation firms in Pasadena34
- Intellectual property litigation firms in Wilmington33
- Intellectual property litigation firms in Palo Alto32
- Intellectual property litigation firms in Raleigh32
- Intellectual property litigation firms in Cleveland31
- Intellectual property litigation firms in Charlotte30
- Intellectual property litigation firms in Columbia28
- Intellectual property litigation firms in Kansas City28
- Intellectual property litigation firms in Las Vegas28
- Intellectual property litigation firms in San Antonio27
- Intellectual property litigation firms in Orlando26
- Intellectual property litigation firms in Santa Monica26
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 intellectual property litigation 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 intellectual property litigation firms are there based in New York, United States?
RevenueBase identified 512 intellectual property litigation firms headquartered in New York, 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?
Epstein Becker Green, headquartered in New York, tops this list with the largest team on record.
Which city has the most intellectual property litigation firms?
New York leads with 512 headquartered companies, followed by Los Angeles (278) and Chicago (242).
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 5,183 verified decision-maker contacts tracked across these 512 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 20, 2026.
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Intellectual property litigation firms by geography
- Intellectual property litigation firms based in Belo Horizonte, Brazil
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- Intellectual property litigation firms based in Curitiba, Brazil
- Intellectual property litigation firms based in Porto Alegre, Brazil
- Intellectual property litigation firms based in Rio De Janeiro, Brazil
- Intellectual property litigation firms based in Sao Paulo, Brazil
- Intellectual property litigation firms based in Montreal, Canada
- Intellectual property litigation firms based in Ottawa, Canada
- Intellectual property litigation firms based in Toronto, Canada
- Intellectual property litigation firms based in Vancouver, Canada
- Intellectual property litigation firms based in Berlin, Germany
- Intellectual property litigation firms based in Frankfurt Am Main, Germany
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.
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- Intellectual property litigation firms based in Belo Horizonte, Brazil
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- Intellectual property litigation firms based in Porto Alegre, Brazil
- Intellectual property litigation firms based in Rio De Janeiro, Brazil
- Intellectual property litigation firms based in Sao Paulo, Brazil