Company lists · Data refreshed September 2026

Top 25 Intellectual property law companies based in Washington, United States

Name: Intellectual property law companies based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 91 companies tracked

As of September 2026, this directory lists 91 intellectual property law companies across Washington, with 2,341 contacts and 1,349 email addresses. Across the United States, New York is the largest hub for this category (172 companies); Washington follows with 91.

Intellectual property law companies advise and represent clients on patents, trademarks, copyrights, trade secrets, licensing, and related disputes. This list covers companies that provide legal services focused on protecting, managing, licensing, or enforcing intellectual property rights. Ranked by team size, largest first. Data current as of September 19, 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 19, 2026 86% judged on-target in blind review

91Companies

2,341Contacts tracked

1,349Verified emails

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The 25 largest intellectual property law companies based in Washington, United States

Ranked by team size

Top 25 of 91 intellectual property law companies based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to intellectual property law companies: 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	Finnegan, Henderson, Farabow, Garrett & Dunner, LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 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 19, 2026
2	Sterne, Kessler, Goldstein & FOX	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	201-500	468 contacts →
	Strong 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 19, 2026
3	Sughrue Mion Pllc	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	201-500	211 contacts →
	Strong evidence “From Sughrue’s inception in 1957 to the present, we have focused solely on intellectual property law.” Source: RevenueBase Database · checked Sep 19, 2026
4	Rothwell Figg	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	94 contacts →
	Strong evidence “Rothwell Figg is a forward-thinking, client-focused law firm practicing at the convergence of intellectual property, litigation, and technology.” Source: RevenueBase Database · checked Sep 19, 2026
5	Bookoff Mcandrews, Pllc	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	88 contacts →
	Indirect evidence “How are we different?” Source: RevenueBase Database · checked Sep 19, 2026
6	Oppenheim Zebrak, LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	40 contacts →
	Indirect evidence “O+Z is a dynamic litigation boutique founded by attorneys with extensive experience protecting content and brands.” Source: RevenueBase Database · checked Sep 19, 2026
7	Kelly Ip, LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	34 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 19, 2026
8	Wenderoth, Lind & Ponack, L.L.P	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	33 contacts →
	Strong evidence “Wenderoth is an Intellectual Property firm with one primary focus - prosecution.” Source: RevenueBase Database · checked Sep 19, 2026
9	Staas & Halsey LLP	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	33 contacts →
	Strong evidence “Staas & Halsey LLP has provided clients with intellectual property protection and technical expertise since 1971.” Source: RevenueBase Database · checked Sep 19, 2026
10	Westerman Hattori Daniels & Adrian LLP	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	29 contacts →
	Strong evidence “WHDA is a full service intellectual property law firm.” Source: RevenueBase Database · checked Sep 19, 2026
11	Jordan IP Law, LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	18 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 19, 2026
12	AIPI	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	16 contacts →
	Strong evidence “AIPI's comprehensive innovation management and intellectual property (IP) services equip companies with the tools they need to develop, scale, and monetize their products and…” Source: RevenueBase Database · checked Sep 19, 2026
13	Stein IP LLC	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	16 contacts →
	Strong evidence “Stein IP LLC is a full service intellectual property law firm with an emphasis on intellectual property creation and maximization.” Source: RevenueBase Database · checked Sep 19, 2026
14	Smith Baluch LLP	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	12 contacts →
	Strong evidence “We handle complex intellectual property matters for some of the world’s leading innovators.” Source: RevenueBase Database · checked Sep 19, 2026
15	Cherian Harkins Dunham LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	12 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 19, 2026
16	Lutzker & Lutzker LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	10 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 19, 2026
17	PV LAW LLP	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	8 contacts →
	Strong evidence “Intellectual Property Law Boutique” Source: RevenueBase Database · checked Sep 19, 2026
18	Markery LAW LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	7 contacts →
	Partial evidence “Markery Law is a certified Women’s Business Enterprise (WBE) through the Women’s Business Enterprise National Council (WBENC).” Source: RevenueBase Database · checked Sep 19, 2026
19	Dunlap Bennett & Ludwig Pllc	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	7 contacts →
	Strong evidence “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: RevenueBase Database · checked Sep 19, 2026
20	Greenberg & Lieberman, LLC	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	7 contacts →
	Strong evidence “Intellectual Property Law Firm.” Source: RevenueBase Database · checked Sep 19, 2026
21	Dnlzito	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	6 contacts →
	Indirect evidence “Established in 1989, in Washington DC, DNLZito has a reputation for providing quality service tailored to the specific needs of each client.” Source: RevenueBase Database · checked Sep 19, 2026
22	Global IP Counselors, LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	6 contacts →
	Indirect evidence “Global IP provides world class IP litigation in federal courts and patent and trademark prosecution.” Source: RevenueBase Database · checked Sep 19, 2026
23	Novotech Patent Firm	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	6 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 19, 2026
24	Winterfeldt IP Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	6 contacts →
	Indirect evidence “Founded by Brian Winterfeldt, Winterfeldt IP Group offers decades of experience with brand management and protection on both analog and digital platforms.” Source: RevenueBase Database · checked Sep 19, 2026
25	Shruti LAW Pllc	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	6 contacts →
	Partial evidence “Shruti Law PLLC® is a Law Firm Headquartered in Washington, DC Shruti Costales is the sole owner and founder of Shruti Law PLLC®.” Source: RevenueBase Database · checked Sep 19, 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: intellectual property law companies. 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 intellectual property law companies.
Partial evidence: Its own public description names part of intellectual property law companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name intellectual property law companies. 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 91 intellectual property law companies based in Washington, United States

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Intellectual property law companies based in Washington, United States at a glance

As of Sep 19, 2026

57.6%Verified-email coverage

25.7Average contacts per company

1-10Median size (employees)

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 91 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 intellectual property law companies, 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 Washington, United States whose own description of what they do matches “intellectual property law companies”. 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 intellectual property law companies), 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 intellectual property law companies, 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 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, 1,349 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 19, 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.

Intellectual property law companies by metro in the United States

Frequently asked

How many intellectual property law companies are in the directory?

The directory includes 91 intellectual property law companies as of September 2026.

Which city in the United States has the most intellectual property law companies?

New York leads the United States with 172 headquartered companies, followed by Washington (91) and Chicago (84).

How can I find contacts at intellectual property law companies?

The directory includes 2,341 contacts and 1,349 email addresses associated with the listed intellectual property law companies.

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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.