Company lists · Data refreshed September 2026

Top 25 Software patent law firms based in New York, United States

Name: Software patent law firms based in New York, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 357 companies tracked

RevenueBase identified 357 software patent law firms headquartered in New York, United States as of September 2026 and tracks 9,446 professional contacts across them, including 5,562 with verified work emails. Across the United States, New York is the largest hub for this category.

This list covers software patent law 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

357Companies

9,446Contacts tracked

5,562Verified emails

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The 25 largest software patent law firms based in New York, United States

Ranked by team size

Top 25 of 357 software patent law 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 software patent law 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Pillsbury Winthrop Shaw Pittman LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,949 contacts →
	Partial evidence “Pillsbury is one of the world’s foremost law firms, operating at the intersection of technology innovation, capital and government.” Source: RevenueBase Database · checked Sep 14, 2026
2	Lowenstein Sandler LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	501-1,000	851 contacts →
	Partial evidence “Lowenstein Sandler LLP is a national law firm with over 400 lawyers based in New York, Palo Alto, Roseland, Salt Lake City, San Francisco, Washington, D.C, and Wilmington.” Source: RevenueBase Database · checked Sep 14, 2026
3	Kelley Drye & Warren LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	501-1,000	690 contacts →
	Partial 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 14, 2026
4	Pierson Ferdinand LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	201-500	279 contacts →
	Partial evidence “Pierson Ferdinand is a global law firm serving clients from over 25 markets.” Source: RevenueBase Database · checked Sep 14, 2026
5	Davis Gilbert LLP	Indirect evidence	New York, United StatesHQ checked Sep 14, 2026	201-500	247 contacts →
	Indirect evidence “Davis+Gilbert helped guide the development of the marketing communications ecosystem over the past century.” Source: RevenueBase Database · checked Sep 14, 2026
6	Effectual Services	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	201-500	242 contacts →
	Partial 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
7	Axinn, Veltrop & Harkrider LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	51-200	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 14, 2026
8	Frankfurt Kurnit Klein & Selz	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	51-200	186 contacts →
	Partial 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 14, 2026
9	Ellenoff Grossman & Schole LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	51-200	183 contacts →
	Partial 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 14, 2026
10	Fross Zelnick Lehrman & Zissu	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	51-200	182 contacts →
	Partial 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
11	Moses Singer	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	51-200	156 contacts →
	Indirect evidence “Moses Singer provides legal services to companies, individuals and families in the New York City area.” Source: RevenueBase Database · checked Sep 14, 2026
12	Desmarais LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	51-200	140 contacts →
	Indirect 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
13	Ladas & Parry LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	51-200	135 contacts →
	Indirect evidence “As an enterprise grows, its need for intellectual property (IP) protection expands.” Source: RevenueBase Database · checked Sep 14, 2026
14	Olshan Frome Wolosky LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	51-200	132 contacts →
	Partial 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 14, 2026
15	Kenyon & Kenyon LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	n/a	117 contacts →
	Partial 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
16	HG LAW LLP	Strong evidence	New York, NY, United StatesHQ checked Sep 14, 2026	51-200	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 14, 2026
17	Cowan, Liebowitz & Latman, P.C	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	51-200	94 contacts →
	Partial 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
18	Dorf Nelson & Zauderer LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	51-200	88 contacts →
	Partial 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 14, 2026
19	Amster Rothstein & Ebenstein LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	51-200	85 contacts →
	Partial 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
20	Haug Partners LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	51-200	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 14, 2026
21	Abrams Garfinkel Margolis Bergson, LLP Agmb	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	51-200	78 contacts →
	Partial 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 14, 2026
22	Constantine Cannon LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	51-200	74 contacts →
	Indirect evidence “No other.” Source: RevenueBase Database · checked Sep 14, 2026
23	Ballon Stoll P.C	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	11-50	70 contacts →
	Indirect evidence “Grounded in History; Poised for the Future Founded in 1931 and built upon a tradition of excellence, Ballon Stoll P.C.” Source: RevenueBase Database · checked Sep 14, 2026
24	Wilk Auslander LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 14, 2026	51-200	69 contacts →
	Partial evidence “Wilk Auslander is a full-service law firm delivering the expertise and resources of a large firm combined with the attention and access of a boutique firm.” Source: RevenueBase Database · checked Sep 14, 2026
25	Bochner Pllc	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	51-200	61 contacts →
	Indirect evidence “At Bochner, we help our clients across the globe navigate their legal, business, and regulatory challenges – from startup to exit.” Source: RevenueBase Database · checked Sep 14, 2026

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: software patent 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 software patent law firms.
Partial evidence: Its own public description names part of software patent law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name software patent 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 357 software patent law firms based in New York, United States

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Software patent law firms based in New York, United States at a glance

As of Sep 14, 2026

58.9%Verified-email coverage

26.5Average contacts per company

1-10Median size (employees)

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

243

11-50

51-200

201-500

501-1,000

1,001-5,000

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 357 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 software patent 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 New York, United States whose own description of what they do matches “software patent 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 software patent 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 software patent law 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, 5,562 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.

Software patent law firms by metro in the United States

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 software patent 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 software patent law firms are there based in New York, United States?

RevenueBase identified 357 software patent law 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?

Pillsbury Winthrop Shaw Pittman LLP, headquartered in New York, tops this list with the largest team on record.

Which city in the United States has the most software patent law firms?

New York leads the United States with 357 headquartered companies, followed by Chicago (187) and Los Angeles (176).

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 5,562 verified decision-maker contacts tracked across these 357 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.