Company lists · Data verified August 2026

Top 25 Chemical patent law firms based in the United States

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 890 companies tracked

There are 890 chemical patent law firms headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 15,833 professional contacts across them, including 8,850 with verified work emails and 8,158 with mobile numbers. Washington is the largest hub.

This list covers chemical 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. Data current as of August 28, 2026.

890Companies

15,833Contacts tracked

8,850Verified emails

8,158Mobile numbers

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

Ranked by team size

Top 25 of 890 chemical patent law firms based in the United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Fish & Richardson P.C	Austin, TX	1,001-5,000	1,534	957
2	Finnegan, Henderson, Farabow, Garrett & Dunner, LLP	Washington, DC	501-1,000	942	534
3	Maxval Group, INC	Los Altos, CA	501-1,000	757	140
4	Knobbe Martens	San Francisco, CA	501-1,000	618	370
5	Sterne, Kessler, Goldstein & FOX	Washington, DC	201-500	474	309
6	Wolf Greenfield	New York, NY	201-500	432	311
7	Merchant & Gould P.C	Los Angeles, CA	201-500	318	179
8	Banner Witcoff	Chicago, IL	201-500	286	170
9	Harness IP	Bloomfield Hills, MI	201-500	264	154
10	Kilburn & Strode	CA	201-500	248	184
11	Cantor Colburn LLP	Hartford, CT	201-500	222	145
12	Marshall, Gerstein & Borun LLP	Raleigh, NC	51-200	214	169
13	Fross Zelnick Lehrman & Zissu	New York, NY	51-200	181	103
14	Mcandrews, Held & Malloy, LTD	Chicago	51-200	166	92
15	Leydig, Voit & Mayer, LTD	Alexandria, VA	51-200	157	113
16	OBLON	Alexandria, VA	201-500	157	66
17	Workman Nydegger	Salt Lake City, UT	51-200	152	88
18	Klarquist Sparkman, LLP	Portland, OR	51-200	145	100
19	Mbhb Mcdonnell Boehnen Hulbert & Berghoff LLP	Chicago, IL	51-200	140	100
20	Seed IP LAW Group	Seattle, WA	51-200	140	82
21	The Webb LAW Firm	Pittsburgh, PA	51-200	134	83
22	Birch, Stewart, Kolasch & Birch, LLP Bskb	Vienna, VA	51-200	129	59
23	LEE & Hayes, P.C	Vienna, VA	51-200	120	79
24	Clark Elbing LLP	Boston, MA	51-200	109	71
25	Fitch, Even, Tabin & Flannery LLP	Washington, DC	51-200	106	66

Showing 25 of 890 chemical patent law firms based in the United States

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

As of Aug 28, 2026

1-10Median size (employees)

WashingtonLargest hub · 42 HQs

8,158Contacts with mobile numbers

46Emails re-verified in last 30 days

Companies by employee count

1-10

532

11-50

273

51-200

201-500

501-1,000

1,001-5,000

Chemical patent law firms by metro

Metro	Companies
Chemical patent law firms in Washington	42
Chemical patent law firms in Austin	30
Chemical patent law firms in New York	28
Chemical patent law firms in Houston	26
Chemical patent law firms in Chicago	22
Chemical patent law firms in Alexandria	19
Chemical patent law firms in Dallas	19
Chemical patent law firms in Minneapolis	17

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “chemical patent law firms”, with match quality audited by blind human judging, and headquartered in the United States.
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: Contact records re-verify on a rolling cadence; 46 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many chemical patent law firms are there based in the United States?

There are 890 chemical patent law firms headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Fish & Richardson P.C, headquartered in Austin, tops this list with the largest team on record.

Which city has the most chemical patent law firms?

Washington leads with 42 headquartered companies, followed by Austin (30) and New York (28).

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 8,850 verified decision-maker contacts tracked across these 890 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.