Company lists · Data refreshed September 2026

Top 25 Ip law firms based in the United States

Name: Ip law firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 3,361 companies tracked

RevenueBase identified 3,361 ip law firms headquartered in the United States as of September 2026 and tracks 65,006 professional contacts across them, including 37,271 with verified work emails. New York is the largest hub.

This list covers ip 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 21, 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 21, 2026 86% judged on-target in blind review

3,361Companies

65,006Contacts tracked

37,271Verified emails

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The 25 largest ip law firms based in the United States

Ranked by team size

Top 25 of 3,361 ip law firms based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to ip 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	Cooley LLP	Partial evidence	Palo Alto, CA, United StatesHQ checked Sep 21, 2026	1,001-5,000	3,341 contacts →
	Partial evidence “Clients partner with Cooley on transformative deals, complex IP and regulatory matters, and high-stakes litigation.” Source: RevenueBase Database · checked Sep 21, 2026
2	Foley & Lardner LLP	Indirect evidence	Milwaukee, WI, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,884 contacts →
	Indirect evidence “Foley & Lardner LLP stands at the nexus of the Energy & Infrastructure, Health Care & Life Sciences, Innovative Technology, and Manufacturing Sectors.” Source: RevenueBase Database · checked Sep 21, 2026
3	Perkins Coie	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,746 contacts →
	Indirect evidence “Perkins Coie has combined with Ashurst to form Ashurst Perkins Coie.” Source: RevenueBase Database · checked Sep 21, 2026
4	Venable LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,790 contacts →
	Partial evidence “Committed to Your Success – As a law firm of more than 900 professionals, Venable delivers legal services globally in every area of regulatory compliance, government affairs…” Source: RevenueBase Database · checked Sep 21, 2026
5	Crowell & Moring	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,602 contacts →
	Partial evidence “Crowell & Moring is an international law firm with operations in the United States, Europe, MENA, and Asia.” Source: RevenueBase Database · checked Sep 21, 2026
6	Kilpatrick Townsend & Stockton LLP	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,558 contacts →
	Indirect evidence “Kilpatrick is trusted counsel to the world’s most innovative companies.” Source: RevenueBase Database · checked Sep 21, 2026
7	MINTZ	Partial evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,326 contacts →
	Partial evidence “Mintz is a full-service law firm serving clients in the life sciences, energy, private equity, and technology industries.” Source: RevenueBase Database · checked Sep 21, 2026
8	Fish & Richardson P.C	Partial evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,167 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 21, 2026
9	Fenwick & West	Partial evidence	Silicon Valley, CA, United StatesHQ checked Sep 21, 2026	501-1,000	1,126 contacts →
	Partial evidence “Fenwick is a leading law firm, purpose-built to guide visionary tech and life sciences companies and their investors through every stage of growth, from startups securing their…” Source: RevenueBase Database · checked Sep 21, 2026
10	Finnegan, Henderson, Farabow, Garrett & Dunner, LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	501-1,000	936 contacts →
	Indirect evidence “When your most valuable assets are ideas, innovation, and brand-you need the best.” Source: RevenueBase Database · checked Sep 21, 2026
11	Maxval Group, INC	Partial evidence	Los Altos, CA, United StatesHQ checked Sep 21, 2026	501-1,000	754 contacts →
	Partial evidence “Since 2004, MaxVal has helped the world's most innovative organizations capitalize on their intellectual property by being different from the legacy IP solution providers.” Source: RevenueBase Database · checked Sep 21, 2026
12	Butler Snow LLP	Indirect evidence	Ridgeland, MS, United StatesHQ checked Sep 21, 2026	501-1,000	685 contacts →
	Indirect evidence “With over 400 attorneys in offices in Albuquerque, Ambler (PA), Atlanta, Austin, Baton Rouge, Bethlehem (PA), Birmingham, Boston, Charleston, Dallas, Denver, Gulfport, Huntsville…” Source: RevenueBase Database · checked Sep 21, 2026
13	Fennemore	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 21, 2026	501-1,000	674 contacts →
	Indirect evidence “Since 1885, Fennemore has provided legal counsel to help clients thrive in a complex, evolving business and legal landscape.” Source: RevenueBase Database · checked Sep 21, 2026
14	Honigman LLP	Partial evidence	Detroit, MI, United StatesHQ checked Sep 21, 2026	501-1,000	669 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 21, 2026
15	Knobbe Martens	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	501-1,000	606 contacts →
	Indirect evidence “Knobbe Martens protects the ideas that drive innovation and propel our world forward.” Source: RevenueBase Database · checked Sep 21, 2026
16	Eckert Seamans	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 21, 2026	501-1,000	570 contacts →
	Indirect evidence “Eckert Seamans Cherin & Mellott LLC has lawyers in offices throughout the United States, including Harrisburg, Philadelphia, and Pittsburgh, Pennsylvania; Boston, Massachusetts…” Source: RevenueBase Database · checked Sep 21, 2026
17	Sagaciouselevate	Strong evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	501-1,000	488 contacts →
	Strong evidence “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: RevenueBase Database · checked Sep 21, 2026
18	Tucker Ellis LLP	Partial evidence	Cleveland, OH, United StatesHQ checked Sep 21, 2026	201-500	481 contacts →
	Partial evidence “Tucker Ellis LLP is a full-service law firm of more than 240 lawyers serving clients from “11 Long Hallways” nationwide: Atlanta, Chicago, Cleveland, Columbus, Los Angeles…” Source: RevenueBase Database · checked Sep 21, 2026
19	Sterne, Kessler, Goldstein & FOX	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	201-500	468 contacts →
	Partial evidence “Sterne, Kessler, Goldstein & Fox is a full-service intellectual property law firm that provides innovative solutions tailored to your business and industry.” Source: RevenueBase Database · checked Sep 21, 2026
20	Wolf Greenfield	Indirect evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	201-500	428 contacts →
	Indirect evidence “Wolf, Greenfield & Sacks, P.C.” Source: RevenueBase Database · checked Sep 21, 2026
21	Phillips Lytle LLP	Partial evidence	Buffalo, NY, United StatesHQ checked Sep 21, 2026	201-500	399 contacts →
	Partial evidence “We are a preeminent law firm that provides the highest level of client service.” Source: RevenueBase Database · checked Sep 21, 2026
22	Sandberg Phoenix	Indirect evidence	St Louis, MO, United StatesHQ checked Sep 21, 2026	201-500	387 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 21, 2026
23	Wiggin And Dana LLP	Partial evidence	New Haven, CT, United StatesHQ checked Sep 21, 2026	201-500	366 contacts →
	Partial evidence “Wiggin and Dana is a full-service law firm of highly talented, creative and experienced lawyers dedicated to exceeding our clients’ expectations every day.” Source: RevenueBase Database · checked Sep 21, 2026
24	Kirton Mcconkie	Partial evidence	Salt Lake City, UT, United StatesHQ checked Sep 21, 2026	201-500	359 contacts →
	Partial evidence “Kirton McConkie is Utah’s premier full-service law firm with five locations and more than 200 award-winning attorneys who successfully represent clients in intellectual property…” Source: RevenueBase Database · checked Sep 21, 2026
25	Sullivan & Worcester LLP	Partial evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	201-500	359 contacts →
	Partial evidence “As an international law firm with innovation in our DNA, we attract clients that are visionaries, trailblazers and game changers.” Source: RevenueBase Database · checked Sep 21, 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: ip 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 ip law firms.
Partial evidence: Its own public description names part of ip law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name ip 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 3,361 ip law firms based in the United States

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Ip law firms based in the United States at a glance

As of Sep 21, 2026

57.3%Verified-email coverage

19.3Average contacts per company

1-10Median size (employees)

7.7%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

2,329

11-50

749

51-200

203

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 3,361 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 ip 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 “ip 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 ip 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 ip 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, 37,271 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 21, 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.

Ip law firms by metro

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 ip 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 ip law firms are there based in the United States?

RevenueBase identified 3,361 ip 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?

Cooley LLP, headquartered in Palo Alto, tops this list with the largest team on record.

Which city has the most ip law firms?

New York leads with 259 headquartered companies, followed by Chicago (121) and Washington (121).

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 37,271 verified decision-maker contacts tracked across these 3,361 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 21, 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.