Company lists · Data refreshed September 2026

Top 23 Intellectual property law firms based in Washington, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 117 companies tracked

RevenueBase identified 117 intellectual property law firms headquartered in Washington, United States as of September 2026 and tracks 4,219 professional contacts across them, including 2,608 with verified work emails. New York is the largest hub.

This list covers intellectual property 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 4, 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.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

117Companies

4,219Contacts tracked

2,608Verified emails

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The 23 largest intellectual property law firms based in Washington, United States

Ranked by team size

Top 23 of 117 intellectual property law firms based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names intellectual property law firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Venable LLPPartial evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	1,001-5,000	1,791
	“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: company website · checked Sep 4, 2026
2	Finnegan, Henderson, Farabow, Garrett & Dunner, LLPIndirect evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	501-1,000	942
	“When your most valuable assets are ideas, innovation, and brand-you need the best.” Source: company website · checked Sep 4, 2026
3	Sterne, Kessler, Goldstein & FOXStrong evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	201-500	474
	“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 4, 2026
4	Bookoff Mcandrews, PllcIndirect evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	51-200	89
	“How are we different?” Source: company website · checked Sep 4, 2026
5	HWG LLPPartial evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	51-200	71
	“HWG LLP is a boutique law firm designed to offer clients access to top tier legal talent without unnecessary overhead.” Source: company website · checked Sep 4, 2026
6	Berliner Corcoran & Rowe LLPStrong evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	11-50	44
	“Berliner Corcoran & Rowe LLP is a boutique law firm focused on international law, export controls/sanctions/customs/OFAC/CFIUS, litigation, corporate and intellectual property law.” Source: company website · checked Sep 4, 2026
7	Oppenheim Zebrak, LLPIndirect evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	11-50	40
	“O+Z is a dynamic litigation boutique founded by attorneys with extensive experience protecting content and brands.” Source: company website · checked Sep 4, 2026
8	Kelly Ip, LLPPartial evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	11-50	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 4, 2026
9	Wenderoth, Lind & Ponack, L.L.PStrong evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	51-200	33
	“Wenderoth is an Intellectual Property firm with one primary focus - prosecution.” Source: company website · checked Sep 4, 2026
10	Staas & Halsey LLPStrong evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	51-200	32
	“Staas & Halsey LLP has provided clients with intellectual property protection and technical expertise since 1971.” Source: company website · checked Sep 4, 2026
11	Westerman Hattori Daniels & Adrian LLPStrong evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	51-200	29
	“WHDA is a full service intellectual property law firm.” Source: company website · checked Sep 4, 2026
12	Duncan, Weinberg, Genzer & Pembroke, P.C. DwgpIndirect evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	11-50	27
	“Since its founding in 1971, DWG & P, has provided a broad range of counseling, regulatory, litigation and legislative services to clients in every region of the country.” Source: company website · checked Sep 4, 2026
13	Jordan IP Law, LLCPartial evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	11-50	20
	“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 4, 2026
14	Veritas LAWPartial evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	1-10	16
	“A full-service business law firm, Veritas Law has expertise in corporate and transactional law, litigation, and licensing.” Source: company website · checked Sep 4, 2026
15	Stein IP LLCStrong evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	11-50	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 4, 2026
16	AIPIStrong evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	11-50	16
	“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: company website · checked Sep 4, 2026
17	MEI & Mark LLPPartial evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	11-50	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 4, 2026
18	Levine, Blaszak, Block & Boothby, LLPIndirect evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	11-50	13
	“Since it was founded in 1993, LB3 has been the leading firm guiding large customers through a maze of legal, technical, financial, and regulatory issues to close world-class…” Source: company website · checked Sep 4, 2026
19	Smith Baluch LLPStrong evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	1-10	12
	“We handle complex intellectual property matters for some of the world’s leading innovators.” Source: company website · checked Sep 4, 2026
20	Lutzker & Lutzker LLPIndirect evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	1-10	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 4, 2026
21	PV LAW LLPStrong evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	1-10	8
	“Intellectual Property Law Boutique” Source: company website · checked Sep 4, 2026
22	DnlzitoIndirect evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	1-10	7
	“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 4, 2026
23	Greenberg & Lieberman, LLCStrong evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	1-10	7
	“Intellectual Property Law Firm.” Source: company website · checked Sep 4, 2026

Showing 23 of 117 intellectual property law firms based in Washington, United States

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

As of Sep 4, 2026

1-10Median size (employees)

New YorkLargest hub · 276 HQs

Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 117 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 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 “intellectual property 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 intellectual property 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, 2,608 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 4, 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 firms by metro in the United States

Frequently asked

How many intellectual property law firms are there based in Washington, United States?

RevenueBase identified 117 intellectual property 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?

Venable LLP, headquartered in Washington, tops this list with the largest team on record.

Which city has the most intellectual property law firms?

New York leads with 276 headquartered companies, followed by Chicago (121) and Washington (117).

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 2,608 verified decision-maker contacts tracked across these 117 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 4, 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.