Company lists · Data refreshed August 2026
Top 25 Chemical patent law firms based in the United States
RevenueBase identified 890 chemical patent law firms headquartered in the United States as of August 2026 and 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. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed August 31, 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.
The 25 largest chemical patent law firms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,534 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 Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 2 | 942 contacts → | ||||
Indirect evidence “When your most valuable assets are ideas, innovation, and brand-you need the best.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 3 | 757 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 Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 4 | 618 contacts → | ||||
Indirect evidence “Knobbe Martens protects the ideas that drive innovation and propel our world forward.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 5 | 474 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 Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 6 | 432 contacts → | ||||
Indirect evidence “Wolf, Greenfield & Sacks, P.C.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 7 | 318 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 Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 8 | 286 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 Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 9 | 264 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 Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 10 | 248 contacts → | ||||
Indirect evidence “At Kilburn & Strode, we work collegiately as a firm, pooling our knowledge and experience, and collaboratively with our clients to achieve their goals.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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 Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 12 | 214 contacts → | ||||
Partial evidence “Marshall, Gerstein & Borun LLP has one focus - intellectual property law.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 13 | 181 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 Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 14 | 166 contacts → | ||||
Partial evidence “McAndrews, Held & Malloy is a premier, full-service intellectual property and technology law firm.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 15 | 157 contacts → | ||||
Partial evidence “Leydig, Voit & Mayer remains at the forefront of intellectual property law, providing advice and counsel in intellectual property litigation, licensing, and prosecution services…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 16 | 157 contacts → | ||||
Indirect evidence “Companies across the world depend on Oblon to help them establish, leverage and protect their intellectual property assets in the United States and abroad.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 17 | 152 contacts → | ||||
Partial evidence “Founded over 40 years ago, Workman Nydegger specializes in intellectual property (IP) law and complex litigation.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 18 | 145 contacts → | ||||
Indirect evidence “Klarquist is one of the oldest and largest full-service intellectual property firms in the Pacific Northwest.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 19 | 140 contacts → | ||||
Indirect evidence “At MBHB, the legal and scientific credentials of our professionals are first rate.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 20 | 140 contacts → | ||||
Partial evidence “Seed IP provides comprehensive legal assistance in all areas of intellectual property, including patents, trademarks, copyrights, trade secrets and unfair competition…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 21 | 134 contacts → | ||||
Partial evidence “The most innovative corporations in the world entrust The Webb Law Firm to safeguard their Intellectual Property.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 22 | 129 contacts → | ||||
Strong evidence “Since 1976, BSKB has been providing a full range of intellectual property law services to clients in the areas of patent prosecution, post-grant review, litigation, ITC…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 23 | 120 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 24 | 109 contacts → | ||||
Partial evidence “Clark+Elbing is a top-tier intellectual property (IP) law firm focused on protecting and promoting innovations in life science, chemistry, devices, and diagnostics.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 25 | 106 contacts → | ||||
Partial evidence “With over 160 years of experience, Fitch, Even, Tabin & Flannery LLP is Chicago’s oldest law firm in continuous practice and a national leader in the field of intellectual…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
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: chemical 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 chemical patent law firms.
- Partial evidence
- Its own public description names part of chemical 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 chemical 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 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 31, 2026Companies by employee count
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 chemical 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 “chemical 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 chemical 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 chemical 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, 8,850 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 August 31, 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.
Chemical 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 chemical 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 chemical patent law firms are there based in the United States?
RevenueBase identified 890 chemical patent law firms headquartered in the United States as of August 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?
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 refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 31, 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.
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- Chemical patent law firms based in Germany
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