Company lists · Data refreshed September 2026

Top 25 Advertising and marketing law firms based in Washington, United States

Name: Advertising and marketing 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 27, 2026 117 companies tracked

RevenueBase identified 117 advertising and marketing law firms headquartered in Washington, United States as of September 2026 and tracks 9,139 professional contacts across them, including 6,073 with verified work emails. Across the United States, New York is the largest hub for this category (395 companies); Washington has 117.

This list covers advertising and marketing 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 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 27, 2026 86% judged on-target in blind review

117Companies

9,139Contacts tracked

6,073Verified emails

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The 25 largest advertising and marketing law firms based in Washington, United States

Ranked by team size

Top 25 of 117 advertising and marketing law firms based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to advertising and marketing law firms: 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	Arnold & Porter	Indirect evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	1,001-5,000	2,333 contacts →
	Indirect evidence “Arnold & Porter combines sophisticated regulatory, litigation, and transactional capabilities to resolve clients’ most complex issues.” Source: RevenueBase Database · checked Sep 27, 2026
2	Venable LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,790 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 27, 2026
3	Crowell & Moring	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,602 contacts →
	Partial evidence “Crowell & Moring is an international law firm with operations in the United States, Europe, MENA, and Asia.” Source: RevenueBase Database · checked Sep 27, 2026
4	Finnegan, Henderson, Farabow, Garrett & Dunner, LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 27, 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 27, 2026
5	Wiley Rein LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	501-1,000	576 contacts →
	Indirect evidence “Founded in 1983, Wiley is a dominant presence in the nation’s capital.” Source: RevenueBase Database · checked Sep 27, 2026
6	Sterne, Kessler, Goldstein & FOX	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	201-500	468 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 Sep 27, 2026
7	Keller And Heckman LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	51-200	230 contacts →
	Partial evidence “Keller and Heckman, founded in 1962, has a broad practice in the areas of regulatory law, public policy, and litigation, serving both domestic and international clients.” Source: RevenueBase Database · checked Sep 27, 2026
8	Wilkinson Barker Knauer, LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	51-200	138 contacts →
	Partial evidence “With offices in Washington, DC, Denver, Colorado, and Austin, Texas, Wilkinson Barker Knauer (WBK) is the nation’s largest stand-alone communications and technology law firm.” Source: RevenueBase Database · checked Sep 27, 2026
9	Blushark Digital	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	51-200	137 contacts →
	Partial evidence “BluShark Digital LLC was founded on the principle of providing high quality online marketing solutions for companies struggling to stand out online.” Source: RevenueBase Database · checked Sep 27, 2026
10	Rothwell Figg	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	51-200	94 contacts →
	Partial 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 27, 2026
11	Bookoff Mcandrews, Pllc	Indirect evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	51-200	88 contacts →
	Indirect evidence “How are we different?” Source: RevenueBase Database · checked Sep 27, 2026
12	DOW Lohnes	Indirect evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	201-500	73 contacts →
	Indirect evidence “On January 1, 2014, Dow Lohnes merged with Cooley LLP.” Source: RevenueBase Database · checked Sep 27, 2026
13	HWG LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	51-200	70 contacts →
	Partial evidence “HWG LLP is a boutique law firm designed to offer clients access to top tier legal talent without unnecessary overhead.” Source: RevenueBase Database · checked Sep 27, 2026
14	Oppenheim Zebrak, LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 27, 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 27, 2026
15	Kelly Ip, LLP	Strong evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	11-50	34 contacts →
	Strong 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 27, 2026
16	Staas & Halsey LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	51-200	33 contacts →
	Indirect evidence “Staas & Halsey LLP has provided clients with intellectual property protection and technical expertise since 1971.” Source: RevenueBase Database · checked Sep 27, 2026
17	Duncan, Weinberg, Genzer & Pembroke, P.C. Dwgp	Indirect evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	11-50	28 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 27, 2026
18	GKG Law, P.C	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	11-50	26 contacts →
	Partial evidence “Beginning in 1955, GKG Law remains dedicated to crafting the best approach to meet our clients’ needs.” Source: RevenueBase Database · checked Sep 27, 2026
19	JAFFE	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	11-50	26 contacts →
	Partial evidence “The Jaffe name is synonymous with legal PR and marketing.” Source: RevenueBase Database · checked Sep 27, 2026
20	Jordan IP Law, LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 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 27, 2026
21	Veritas LAW	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	1-10	16 contacts →
	Partial evidence “A full-service business law firm, Veritas Law has expertise in corporate and transactional law, litigation, and licensing.” Source: RevenueBase Database · checked Sep 27, 2026
22	Stein IP LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	11-50	16 contacts →
	Partial 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 27, 2026
23	Friedlander Misler Pllc	Indirect evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	11-50	14 contacts →
	Indirect evidence “Founded in 1964, we are a Washington, D.C.” Source: RevenueBase Database · checked Sep 27, 2026
24	MEI & Mark LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	11-50	13 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 27, 2026
25	Levine, Blaszak, Block & Boothby, LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	11-50	13 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 27, 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: advertising and marketing 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 advertising and marketing law firms.
Partial evidence: Its own public description names part of advertising and marketing law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name advertising and marketing 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 117 advertising and marketing law firms based in Washington, United States

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Advertising and marketing law firms based in Washington, United States at a glance

As of Sep 27, 2026

66.5%Verified-email coverage

78.1Average contacts per company

1-10Median size (employees)

Sep 27, 2026Page data 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 for Washington, 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 advertising and marketing 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 Washington, United States whose own description of what they do matches “advertising and marketing 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 advertising and marketing 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 advertising and marketing 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 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, 6,073 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 27, 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.

Advertising and marketing law firms by metro in the United States

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 advertising and marketing 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 advertising and marketing law firms are there based in Washington, United States?

RevenueBase identified 117 advertising and marketing 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?

Arnold & Porter, headquartered in Washington, tops this list with the largest team on record.

Which city in the United States has the most advertising and marketing law firms?

New York leads the United States with 395 headquartered companies, followed by Los Angeles (201) and Chicago (190). Washington has 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 6,073 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 27, 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.