Company lists · Data refreshed September 2026

Top 25 Intellectual property consulting firms based in New York, United States

RevenueBase identified 179 intellectual property consulting firms headquartered in New York, United States as of September 2026 and tracks 2,682 professional contacts across them, including 895 with verified work emails. Across the United States, New York is the largest hub for this category.

This list covers intellectual property consulting 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 14, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 14, 2026 86% judged on-target in blind review
179Companies
2,682Contacts tracked
895Verified emails
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The 25 largest intellectual property consulting firms based in New York, United States

Ranked by team size
Top 25 of 179 intellectual property consulting firms based in New York, United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to intellectual property consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceNew York, NY, United StatesHQ checked Sep 14, 2026201-500423 contacts →

Partial evidence

“Keystone is an innovative strategy, economics, and technology consulting firm delivering transformative ideas and novel solutions to global brands and law firms on leading-edge…”

Source: RevenueBase Database · checked Sep 14, 2026
2Indirect evidenceNew York, NY, United StatesHQ checked Sep 14, 2026201-500242 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 14, 2026
3Indirect evidenceNew York, NY, United StatesHQ checked Sep 14, 202651-200182 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 14, 2026
4Strong evidenceNew York, NY, United StatesHQ checked Sep 14, 202651-200140 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 14, 2026
5Strong evidenceNew York, NY, United StatesHQ checked Sep 14, 202651-200135 contacts →

Strong evidence

“As an enterprise grows, its need for intellectual property (IP) protection expands.”

Source: RevenueBase Database · checked Sep 14, 2026
6Strong evidenceNew York, NY, United StatesHQ checked Sep 14, 2026n/a117 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 14, 2026
7Strong evidenceNew York, NY, United StatesHQ checked Sep 14, 202651-200100 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 14, 2026
8Strong evidenceNew York, NY, United StatesHQ checked Sep 14, 202651-20094 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 14, 2026
9Indirect evidenceNew York, NY, United StatesHQ checked Sep 14, 202651-20090 contacts →

Indirect evidence

“For IP Leaders by IP Professionals: Decades of experience in serving Fortune 500 Corporations & Leading Law Firms.”

Source: RevenueBase Database · checked Sep 14, 2026
10Strong evidenceNew York, NY, United StatesHQ checked Sep 14, 202651-20085 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 14, 2026
11Indirect evidenceNew York, NY, United StatesHQ checked Sep 14, 2026n/a64 contacts →

Indirect evidence

“A trusted partner in IP Value Capture + Creation.”

Source: RevenueBase Database · checked Sep 14, 2026
12Indirect evidenceNew York, NY, United StatesHQ checked Sep 14, 202611-5051 contacts →

Indirect evidence

“At the heart of our business is a commitment to helping brands thrive, grow, and achieve their full potential.”

Source: RevenueBase Database · checked Sep 14, 2026
13Indirect evidenceNew York, United StatesHQ checked Sep 14, 202611-5047 contacts →

Indirect evidence

“Copperpod IP provides technical analysis services for patent litigation and licensing.”

Source: RevenueBase Database · checked Sep 14, 2026
14Indirect evidenceNew York, NY, United StatesHQ checked Sep 14, 202611-5034 contacts →

Indirect evidence

“Jayaram advises individuals and companies around the world, supporting cutting-edge creators, innovators, and change-makers.”

Source: RevenueBase Database · checked Sep 14, 2026
15Indirect evidenceNew York, NY, United StatesHQ checked Sep 14, 202611-5034 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 14, 2026
16Strong evidenceNew York, NY, United StatesHQ checked Sep 14, 202611-5028 contacts →

Strong evidence

“Lucas & Mercanti is an intellectual property law firm.”

Source: RevenueBase Database · checked Sep 14, 2026
17Strong evidenceNew York, NY, United StatesHQ checked Sep 14, 202611-5027 contacts →

Strong evidence

“Backed by more than 25 years of experience, Klaris is a boutique media, entertainment, technology, and intellectual property law firm that guides its clients through a changing IP…”

Source: RevenueBase Database · checked Sep 14, 2026
18Strong evidenceNew York, NY, United StatesHQ checked Sep 14, 202651-20026 contacts →

Strong evidence

“Ostrolenk Faber is a premier intellectual property boutique law firm.”

Source: RevenueBase Database · checked Sep 14, 2026
19Strong evidenceNew York, NY, United StatesHQ checked Sep 14, 202611-5023 contacts →

Strong evidence

“Epstein Drangel LLP is a leading intellectual property law firm.”

Source: RevenueBase Database · checked Sep 14, 2026
20Strong evidenceNew York, NY, United StatesHQ checked Sep 14, 202611-5022 contacts →

Strong evidence

“GS2Law is a boutique law firm focused on intellectual property, dispute resolution and commercial transactional matters.”

Source: RevenueBase Database · checked Sep 14, 2026
21Indirect evidenceNew York, NY, United StatesHQ checked Sep 14, 20261-1021 contacts →

Indirect evidence

“Gemini’s life sciences lawyers are among the most experienced and successful at helping manufacturers of biopharma products navigate IP barriers to access the U.S.”

Source: RevenueBase Database · checked Sep 14, 2026
22Indirect evidenceNew York, NY, United StatesHQ checked Sep 14, 202611-5021 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 14, 2026
23Indirect evidenceNew York, NY, United StatesHQ checked Sep 14, 202611-5018 contacts →

Indirect evidence

“DOAR, Inc and WIT Legal, LLC have joined forces by bringing together leading litigation strategy consultants and the most qualified testifying experts under one roof.”

Source: RevenueBase Database · checked Sep 14, 2026
24Indirect evidenceNew York, NY, United StatesHQ checked Sep 14, 202611-5017 contacts →

Indirect evidence

“Large publicly traded companies and cutting-edge startups trust Gish PLLC to handle their most intricate IP matters.”

Source: RevenueBase Database · checked Sep 14, 2026
25Indirect evidenceNew York, NY, United StatesHQ checked Sep 14, 202611-5016 contacts →

Indirect evidence

“Patrick Doerr is a modern law firm built on creativity, collaboration and trust.”

Source: RevenueBase Database · checked Sep 14, 2026

Showing 25 of 179 intellectual property consulting firms based in New York, United States

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Intellectual property consulting firms based in New York, United States at a glance

As of Sep 14, 2026
33.4%Verified-email coverage
15.0Average contacts per company
1-10Median size (employees)
Sep 14, 2026Page data refreshed

Companies by employee count

1-10
124
11-50
39
51-200
13
201-500
2
501-1,000
1

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 179 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 consulting 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 consulting 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 consulting 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 consulting 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, 895 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 14, 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.

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 consulting 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 consulting firms are there based in New York, United States?

RevenueBase identified 179 intellectual property consulting 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?

Keystone, headquartered in New York, tops this list with the largest team on record.

Which city in the United States has the most intellectual property consulting firms?

New York leads the United States with 179 headquartered companies, followed by Washington (94) and Chicago (82).

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 895 verified decision-maker contacts tracked across these 179 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 14, 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 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.