Company lists · Data refreshed September 2026
Top 25 Patent law firms based in Washington, United States
RevenueBase identified 82 patent law firms headquartered in Washington, United States as of September 2026 and tracks 2,221 professional contacts across them, including 1,317 with verified work emails. New York is the largest hub.
This list covers patent law firms headquartered in Washington, 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 patent law firms based in Washington, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 936 | ||||
“When your most valuable assets are ideas, innovation, and brand-you need the best.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 468 | ||||
“Sterne, Kessler, Goldstein & Fox is a full-service intellectual property law firm that provides innovative solutions tailored to your business and industry.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | Sughrue Mion PllcPartial evidence | 211 | |||
“From Sughrue’s inception in 1957 to the present, we have focused solely on intellectual property law.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 94 | ||||
“Rothwell Figg is a forward-thinking, client-focused law firm practicing at the convergence of intellectual property, litigation, and technology.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 88 | ||||
“How are we different?” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 34 | ||||
“Kelly IP is a leading IP law boutique focusing on litigation and counseling in trademark, unfair competition, false advertising, right-of-publicity, copyright, design protection…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | Wenderoth, Lind & Ponack, L.L.PIndirect evidence | 33 | |||
“Wenderoth is an Intellectual Property firm with one primary focus - prosecution.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 33 | ||||
“Staas & Halsey LLP has provided clients with intellectual property protection and technical expertise since 1971.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | Westerman Hattori Daniels & Adrian LLPPartial evidence | 29 | |||
“WHDA is a full service intellectual property law firm.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 18 | ||||
“At Jordan IP Law, LLC, we help to extend the growth of your business by providing large firm patent experience with unprecedented personal attention at a value that meets your…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 16 | ||||
“Stein IP LLC is a full service intellectual property law firm with an emphasis on intellectual property creation and maximization.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 13 | ||||
“Founded in February 2009, Mei & Mark LLP is a minority-owned law firm based in Washington, DC, and has been recognized as one of the Go-To Law Firms at the Top 500 Companies by…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | Smith Baluch LLPIndirect evidence | 12 | |||
“We handle complex intellectual property matters for some of the world’s leading innovators.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 12 | ||||
“Cherian Harkins Dunham LLP blends the knowledge and depth of a big law firm with the trial experience of a litigation boutique, and a history of success in high stakes cases.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 10 | ||||
“In 1998 Arnold Lutzker and Susan Lutzker founded Lutzker & Lutzker LLP with the vision of a small, dynamic practice that would specialize in digital age legal issues affecting the…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | PV LAW LLPPartial evidence | 8 | |||
“Intellectual Property Law Boutique” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 7 | ||||
“We are an intellectual property firm in Washington DC handling in the US and throughout the world the filing, maintaining and protecting patent, trademarks and copyrights.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 7 | ||||
“Intellectual Property Law Firm.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 6 | ||||
“Established in 1989, in Washington DC, DNLZito has a reputation for providing quality service tailored to the specific needs of each client.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 6 | ||||
“Global IP provides world class IP litigation in federal courts and patent and trademark prosecution.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | Novotech Patent FirmStrong evidence | 6 | |||
“NovoTech Patent Firm is a leading patent law firm with a team of seasoned patent attorneys who are dedicated to providing our clients with the highest level of legal…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | Winterfeldt IP GroupIndirect evidence | 6 | |||
“Founded by Brian Winterfeldt, Winterfeldt IP Group offers decades of experience with brand management and protection on both analog and digital platforms.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | Shruti LAW PllcPartial evidence | 6 | |||
“Shruti Law PLLC® is a Law Firm Headquartered in Washington, DC Shruti Costales is the sole owner and founder of Shruti Law PLLC®.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | Laurence & Phillips IP LAWPartial evidence | 5 | |||
“Laurence & Phillips IP Law is a U.S.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | Strain PllcIndirect evidence | 4 | |||
“Strain PLLC is a boutique Washington, D.C.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 82 patent law firms based in Washington, United States
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Patent law firms based in Washington, United States at a glance
As of Sep 5, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 82 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 patent law firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Washington, United States whose own description of what they do matches “patent law firms”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among patent law firms, and records with no verified work email. Companies headquartered outside Washington 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 an evidence 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, 1,317 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 5, 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.
Patent law firms by metro in the United States
- Patent law firms in New York114
- Patent law firms in Washington82
- Patent law firms in Chicago72
- Patent law firms in Los Angeles55
- Patent law firms in Houston52
- Patent law firms in Dallas50
- Patent law firms in Atlanta45
- Patent law firms in Austin43
- Patent law firms in San Diego38
- Patent law firms in San Francisco35
- Patent law firms in Irvine32
- Patent law firms in Seattle30
- Patent law firms in Alexandria29
- Patent law firms in Minneapolis29
- Patent law firms in Boston27
- Patent law firms in Miami26
Frequently asked
How many patent law firms are there based in Washington, United States?
RevenueBase identified 82 patent law firms headquartered in Washington, 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?
Finnegan, Henderson, Farabow, Garrett & Dunner, LLP, headquartered in Washington, tops this list with the largest team on record.
Which city has the most patent law firms?
New York leads with 114 headquartered companies, followed by Washington (82) and Chicago (72).
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 1,317 verified decision-maker contacts tracked across these 82 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 5, 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 SmartSearch, 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.