Company lists · Data refreshed September 2026
Top 19 Intellectual property outsourcing firms based in New York, United States
RevenueBase identified 114 intellectual property outsourcing firms headquartered in New York, United States as of September 2026 and tracks 2,276 professional contacts across them, including 989 with verified work emails. New York is the largest hub.
This list covers intellectual property outsourcing 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 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.
The 19 largest intellectual property outsourcing firms based in New York, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 181 | ||||
“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 4, 2026Thanks. The Data Team will review it. | |||||
| 2 | 140 | ||||
“Legal Outsourcing 2.0, as the name suggests, is the next generation of Legal Process Outsourcing.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 3 | 135 | ||||
“As an enterprise grows, its need for intellectual property (IP) protection expands.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 4 | Kenyon & Kenyon LLPStrong evidence | 117 | |||
“Kenyon & Kenyon LLP is a leading intellectual property law firm whose sophisticated and business-oriented approach helps clients succeed with their intellectual property…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 5 | 94 | ||||
“We are a boutique full-service firm recognized worldwide in the areas of intellectual property law and litigation.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 6 | 85 | ||||
“Since 1953, Amster, Rothstein & Ebenstein LLP has focused exclusively on representing clients in all facets of intellectual property law both domestically and internationally.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 7 | 58 | ||||
“A trusted partner in IP Value Capture + Creation.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 8 | 34 | ||||
“Jayaram advises individuals and companies around the world, supporting cutting-edge creators, innovators, and change-makers.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 9 | 34 | ||||
Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 10 | Lexitas Legal Talent SolutionsPartial evidence | 31 | |||
“Lexitas provides legal staffing, document review and commercial contracts outsourcing services.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 11 | Lucas & Mercanti LLPStrong evidence | 28 | |||
“Lucas & Mercanti is an intellectual property law firm.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 12 | 25 | ||||
“Ostrolenk Faber is a premier intellectual property boutique law firm.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 13 | 23 | ||||
“Epstein Drangel LLP is a leading intellectual property law firm.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 14 | 23 | ||||
“GS2Law is a boutique law firm focused on intellectual property, dispute resolution and commercial transactional matters.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 15 | 17 | ||||
“Large publicly traded companies and cutting-edge startups trust Gish PLLC to handle their most intricate IP matters.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 16 | 13 | ||||
“Handal & Morofsky, LLC is a boutique law firm focusing on intellectual property and internet law.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 17 | FAY Kaplun & Marcin, LLPStrong evidence | 12 | |||
“Fay Kaplun & Marcin, LLP specializes in Intellectual Property (IP) Law, assisting clients with identifying, analyzing and protecting IP, including patents, trademarks, copyrights…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 18 | Lombard Geliebter & CohenStrong evidence | 9 | |||
“LGC is a New York City-based boutique law firm specializing in intellectual property litigation, prosecution, and related business and technology matters.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 19 | Powley & Gibson, P.CStrong evidence | 8 | |||
“Our firm advises and counsels clients on a wide range of intellectual property issues in various industries, including pharmaceutical, retail, food services, publishing, apparel…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
Showing 19 of 114 intellectual property outsourcing firms based in New York, United States
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Intellectual property outsourcing firms based in New York, United States at a glance
As of Sep 4, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for New York, over 114 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 outsourcing firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 outsourcing firms”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among intellectual property outsourcing 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 an evidence 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, 989 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 4, 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 outsourcing firms by metro in the United States
- Intellectual property outsourcing firms in New York114
- Intellectual property outsourcing firms in Washington77
- Intellectual property outsourcing firms in Chicago64
- Intellectual property outsourcing firms in Dallas43
- Intellectual property outsourcing firms in Houston41
- Intellectual property outsourcing firms in Austin40
- Intellectual property outsourcing firms in San Francisco39
- Intellectual property outsourcing firms in Atlanta33
- Intellectual property outsourcing firms in Los Angeles33
- Intellectual property outsourcing firms in San Diego33
- Intellectual property outsourcing firms in Alexandria29
- Intellectual property outsourcing firms in Boston27
- Intellectual property outsourcing firms in Seattle26
- Intellectual property outsourcing firms in Irvine25
- Intellectual property outsourcing firms in Minneapolis25
Frequently asked
How many intellectual property outsourcing firms are there based in New York, United States?
RevenueBase identified 114 intellectual property outsourcing 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?
Fross Zelnick Lehrman & Zissu, headquartered in New York, tops this list with the largest team on record.
Which city has the most intellectual property outsourcing firms?
New York leads with 114 headquartered companies, followed by Washington (77) and Chicago (64).
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 989 verified decision-maker contacts tracked across these 114 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 4, 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.
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