Company lists · Data verified August 2026

Top 25 Advertising law firms based in Washington, United States

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 91 companies tracked

There are 91 advertising law firms headquartered in Washington, United States (RevenueBase, August 2026). RevenueBase tracks 5,218 professional contacts across them, including 3,125 with verified work emails and 2,911 with mobile numbers. New York is the largest hub.

This list covers advertising 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. Data current as of August 28, 2026.

91Companies

5,218Contacts tracked

3,125Verified emails

2,911Mobile numbers

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

Ranked by team size

Top 25 of 91 advertising law firms based in Washington, United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Venable LLP	Washington, DC	1,001-5,000	1,791	1,184
2	Finnegan, Henderson, Farabow, Garrett & Dunner, LLP	Washington, DC	501-1,000	942	534
3	Adams & Reese	Washington, DC	501-1,000	766	356
4	Wiley Rein LLP	Washington, DC	501-1,000	576	395
5	Halloran Sage	Washington, DC	51-200	111	77
6	Fitch, Even, Tabin & Flannery LLP	Washington, DC	51-200	106	66
7	Bookoff Mcandrews, Pllc	Washington, DC	51-200	89	76
8	Haug Partners LLP	Washington, DC	51-200	81	50
9	DOW Lohnes	Washington, DC	201-500	73	6
10	HWG LLP	Washington, DC	51-200	71	52
11	Grunfeld, Desiderio, Lebowitz, Silverman & Klestadt LLP	Washington, DC	51-200	54	47
12	Oppenheim Zebrak, LLP	Washington, DC	11-50	40	25
13	Kelly Ip, LLP	Washington, DC	11-50	34	31
14	Staas & Halsey LLP	Washington, DC	51-200	32	15
15	Duncan, Weinberg, Genzer & Pembroke, P.C. Dwgp	Washington, DC	11-50	27	3
16	Infolawgroup LLP	Washington, DC	11-50	26	19
17	GKG Law, P.C	Washington, DC	11-50	26	16
18	Jordan IP Law, LLC	Washington, DC	11-50	20	17
19	Shinder Cantor Lerner LLP	Washington, DC	11-50	20	15
20	Veritas LAW	Washington, DC	1-10	16	7
21	Stein IP LLC	Washington, DC	11-50	16	6
22	MEI & Mark LLP	Washington, DC	11-50	13	10
23	Telecommunications LAW Professionals Pllc	Washington, DC	1-10	13	10
24	Levine, Blaszak, Block & Boothby, LLP	Washington, DC	11-50	13	9
25	Rozier Hardt Mcdonough Pllc	Washington, DC	1-10	13	9

Showing 25 of 91 advertising law firms based in Washington, United States

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

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 183 HQs

2,911Contacts with mobile numbers

16Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Advertising law firms by metro in the United States

Metro	Companies
Advertising law firms in New York	183
Advertising law firms in Washington	91
Advertising law firms in Los Angeles	80
Advertising law firms in Chicago	77
Advertising law firms in Houston	66
Advertising law firms in Dallas	50
Advertising law firms in Atlanta	43
Advertising law firms in San Francisco	38

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “advertising law firms”, with match quality audited by blind human judging, and headquartered in Washington, United States.
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: Contact records re-verify on a rolling cadence; 16 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

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

There are 91 advertising law firms headquartered in Washington, United States as of August 2026 (RevenueBase).

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 advertising law firms?

New York leads with 183 headquartered companies, followed by Washington (91) and Los Angeles (80).

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 3,125 verified decision-maker contacts tracked across these 91 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.