Company lists · Data refreshed September 2026

Top 25 Drug patent law firms based in the United States

Name: Drug patent 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 28, 2026 2,092 companies tracked

RevenueBase identified 2,092 drug patent law firms headquartered in the United States as of September 2026 and tracks 38,326 professional contacts across them, including 21,483 with verified work emails. New York is the largest hub.

This list covers drug patent 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 28, 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 28, 2026 86% judged on-target in blind review

2,092Companies

38,326Contacts tracked

21,483Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest drug patent law firms based in the United States

Ranked by team size

Top 25 of 2,092 drug patent law firms based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to drug 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	Cooley LLP	Indirect evidence	Palo Alto, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,341 contacts →
	Indirect evidence “Clients partner with Cooley on transformative deals, complex IP and regulatory matters, and high-stakes litigation.” Source: RevenueBase Database · checked Sep 28, 2026
2	Venable LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 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 28, 2026
3	Crowell & Moring	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 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 28, 2026
4	MINTZ	Partial evidence	Boston, MA, United StatesHQ checked Sep 28, 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 28, 2026
5	Fish & Richardson P.C	Partial evidence	Boston, MA, United StatesHQ checked Sep 28, 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 28, 2026
6	Fenwick & West	Partial evidence	Silicon Valley, CA, United StatesHQ checked Sep 28, 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 28, 2026
7	Finnegan, Henderson, Farabow, Garrett & Dunner, LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 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 28, 2026
8	Maxval Group, INC	Indirect evidence	Los Altos, CA, United StatesHQ checked Sep 28, 2026	501-1,000	754 contacts →
	Indirect 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 28, 2026
9	Knobbe Martens	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 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 28, 2026
10	Sagaciouselevate	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	501-1,000	488 contacts →
	Partial 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 28, 2026
11	Tucker Ellis LLP	Partial evidence	Cleveland, OH, United StatesHQ checked Sep 28, 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 28, 2026
12	Sterne, Kessler, Goldstein & FOX	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 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 28, 2026
13	Wolf Greenfield	Indirect evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	201-500	428 contacts →
	Indirect evidence “Wolf, Greenfield & Sacks, P.C.” Source: RevenueBase Database · checked Sep 28, 2026
14	Sandberg Phoenix	Indirect evidence	St Louis, MO, United StatesHQ checked Sep 28, 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 28, 2026
15	Merchant & Gould P.C	Strong evidence	Minneapolis, MN, United StatesHQ checked Sep 28, 2026	201-500	317 contacts →
	Strong evidence “An intellectual property law firm at the leading edge of patent, trademark and copyright law, licensing agreements, trade secret litigation, and more, expect a unique combination…” Source: RevenueBase Database · checked Sep 28, 2026
16	Banner Witcoff	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	201-500	288 contacts →
	Indirect evidence “For more than 100 years Banner Witcoff has provided sound protection and inventive intellectual property solutions for some of the world’s most innovative organizations.” Source: RevenueBase Database · checked Sep 28, 2026
17	Lathrop Gage	Indirect evidence	Kansas City, MO, United StatesHQ checked Sep 28, 2026	501-1,000	283 contacts →
	Indirect evidence “Lathrop Gage clients are the backbone of our economy.” Source: RevenueBase Database · checked Sep 28, 2026
18	Schwegman Lundberg & Woessner, P.A	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 28, 2026	201-500	275 contacts →
	Partial evidence “SLW is a boutique law firm dedicated to protecting intellectual property.” Source: RevenueBase Database · checked Sep 28, 2026
19	Harness IP	Strong evidence	Bloomfield Hills, MI, United StatesHQ checked Sep 28, 2026	201-500	266 contacts →
	Strong evidence “Harness IP’s team of patent and trademark attorneys serve clients in all areas of intellectual property law.” Source: RevenueBase Database · checked Sep 28, 2026
20	Irell & Manella LLP	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 28, 2026	201-500	258 contacts →
	Partial evidence “Irell & Manella LLP is a law firm focused on complex commercial and IP litigation.” Source: RevenueBase Database · checked Sep 28, 2026
21	Effectual Services	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 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 28, 2026
22	Cantor Colburn LLP	Partial evidence	Hartford, CT, United StatesHQ checked Sep 28, 2026	201-500	222 contacts →
	Partial evidence “Cantor Colburn LLP is one of the largest intellectual property specialty law firms in the country, providing clients worldwide with the complete range of IP legal services…” Source: RevenueBase Database · checked Sep 28, 2026
23	Marshall, Gerstein & Borun LLP	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	51-200	213 contacts →
	Partial evidence “Marshall, Gerstein & Borun LLP has one focus - intellectual property law.” Source: RevenueBase Database · checked Sep 28, 2026
24	Sughrue Mion Pllc	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	201-500	211 contacts →
	Partial evidence “From Sughrue’s inception in 1957 to the present, we have focused solely on intellectual property law.” Source: RevenueBase Database · checked Sep 28, 2026
25	Axinn, Veltrop & Harkrider LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 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 28, 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: drug 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 drug patent law firms.
Partial evidence: Its own public description names part of drug 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 drug 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 2,092 drug patent law firms based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 21,483 reachable decision-makers.

Free signup · no credit card

View the full list →

Drug patent law firms based in the United States at a glance

As of Sep 28, 2026

56.1%Verified-email coverage

18.3Average contacts per company

1-10Median size (employees)

6.2%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

1,377

11-50

537

51-200

137

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 2,092 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 drug 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 the United States whose own description of what they do matches “drug 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 drug 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 drug patent 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, 21,483 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 28, 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.

Drug patent 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 drug 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 drug patent law firms are there based in the United States?

RevenueBase identified 2,092 drug patent 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 drug patent law firms?

New York leads with 130 headquartered companies, followed by Washington (85) and Chicago (77).

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 21,483 verified decision-maker contacts tracked across these 2,092 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 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 2,092 drug patent law firms based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Drug patent law firms by geography

Browse the directory

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.