Company lists · Data refreshed September 2026

Top 25 Advertising and marketing law firms based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 6,715 companies tracked

RevenueBase identified 6,715 advertising and marketing law firms headquartered in the United States as of September 2026 and tracks 144,130 professional contacts across them, including 79,194 with verified work emails. New York is the largest hub.

This list covers advertising and marketing law firms headquartered in the 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

6,715Companies

144,130Contacts tracked

79,194Verified emails

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

Ranked by team size

Top 25 of 6,715 advertising and marketing law firms based in the 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	Cooley LLP	Indirect evidence	Palo Alto, CA, United StatesHQ checked Sep 27, 2026	1,001-5,000	3,341 contacts →
	Indirect evidence “Clients partner with Cooley on transformative deals, complex IP and regulatory matters, and high-stakes litigation.” Source: RevenueBase Database · checked Sep 27, 2026
2	Lewis Brisbois	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 27, 2026	1,001-5,000	3,079 contacts →
	Partial evidence “Established in 1979, Lewis Brisbois Bisgaard & Smith LLP is a national, full-service law firm with more than 1,600 attorneys and 54 offices in 30 states and the District of…” Source: RevenueBase Database · checked Sep 27, 2026
3	Perkins Coie	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 27, 2026	1,001-5,000	2,746 contacts →
	Indirect evidence “Perkins Coie has combined with Ashurst to form Ashurst Perkins Coie.” Source: RevenueBase Database · checked Sep 27, 2026
4	Husch Blackwell	Partial evidence	20+ U.s. Offices, United StatesHQ checked Sep 27, 2026	1,001-5,000	2,539 contacts →
	Partial evidence “Husch Blackwell is a different kind of law firm–structured around our clients’ industries and built on a culture of selfless service.” Source: RevenueBase Database · checked Sep 27, 2026
5	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
6	Dechert LLP	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 27, 2026	1,001-5,000	2,041 contacts →
	Partial evidence “Dechert is the law firm that helps business leaders lead.” Source: RevenueBase Database · checked Sep 27, 2026
7	Nelson Mullins Riley & Scarborough	Partial evidence	Columbia, SC, United StatesHQ checked Sep 27, 2026	1,001-5,000	2,012 contacts →
	Partial evidence “Established in 1897, Nelson Mullins is an Am Law 100 firm of more than attorneys, policy advisors and professionals with 33 offices in 17 states and Washington, D.C.” Source: RevenueBase Database · checked Sep 27, 2026
8	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
9	Vinson & Elkins	Partial evidence	Houston, TX, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,693 contacts →
	Partial evidence “Vinson & Elkins is a law firm of global distinction, working with leading companies on wide-ranging matters in key industries across the economy.” Source: RevenueBase Database · checked Sep 27, 2026
10	Ballard Spahr LLP	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,682 contacts →
	Partial evidence “Ballard Spahr LLP, an Am Law 100 law firm with more than 750 lawyers in 19 U.S.” Source: RevenueBase Database · checked Sep 27, 2026
11	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
12	Clark Hill LAW	Indirect evidence	Detroit, MI, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,343 contacts →
	Indirect evidence “At Clark Hill, our value proposition is simple.” Source: RevenueBase Database · checked Sep 27, 2026
13	Quarles & Brady LLP	Indirect evidence	Milwaukee, WI, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,318 contacts →
	Indirect evidence “For over 125 years, Quarles & Brady LLP has provided quality legal services to a wide range of industries on a national stage.” Source: RevenueBase Database · checked Sep 27, 2026
14	Snell & Wilmer	Partial evidence	Phoenix, AZ, United StatesHQ checked Sep 27, 2026	501-1,000	1,219 contacts →
	Partial evidence “Founded in 1938, Snell & Wilmer is a full-service business law firm with more than 500 lawyers practicing in 17 locations throughout the United States and in Mexico.” Source: RevenueBase Database · checked Sep 27, 2026
15	Hinshaw & Culbertson LLP	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	501-1,000	1,188 contacts →
	Partial evidence “Hinshaw & Culbertson LLP is a U.S-based law firm with offices nationwide.” Source: RevenueBase Database · checked Sep 27, 2026
16	Spencer Fane LLP	Partial evidence	Kansas City, MO, United StatesHQ checked Sep 27, 2026	501-1,000	1,041 contacts →
	Partial evidence “Spencer Fane is a law firm where your business leaders work with our business leaders.” Source: RevenueBase Database · checked Sep 27, 2026
17	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
18	Brownstein Hyatt Farber Schreck	Partial evidence	Denver, CO, United StatesHQ checked Sep 27, 2026	501-1,000	902 contacts →
	Partial evidence “For decades, we’ve positioned ourselves at the intersection of law, business and policy to bring a multidisciplinary strategy to every issue.” Source: RevenueBase Database · checked Sep 27, 2026
19	Fredrikson & Byron, P.A	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 27, 2026	501-1,000	834 contacts →
	Partial evidence “At Fredrikson, we’ve built a reputation as the firm “where law and business meet” by bringing business acumen and entrepreneurial thinking to our work with clients, and by…” Source: RevenueBase Database · checked Sep 27, 2026
20	Vorys, Sater, Seymour And Pease LLP	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 27, 2026	501-1,000	831 contacts →
	Indirect evidence “We have been an innovative and forward-thinking firm since day one.” Source: RevenueBase Database · checked Sep 27, 2026
21	Hall Booth Smith, P.C	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 27, 2026	501-1,000	815 contacts →
	Partial evidence “Established in 1989, Hall Booth Smith, P.C.(HBS) is a full-service law firm with 33 offices across the United States.” Source: RevenueBase Database · checked Sep 27, 2026
22	Jones Walker LLP	Indirect evidence	New Orleans, LA, United StatesHQ checked Sep 27, 2026	501-1,000	799 contacts →
	Indirect evidence “Jones Walker LLP provides an extensive range of legal services to a national and international corporate client base through offices in Alabama, Arizona, Florida, Georgia…” Source: RevenueBase Database · checked Sep 27, 2026
23	Dykema	Partial evidence	National, MI, United StatesHQ checked Sep 27, 2026	501-1,000	794 contacts →
	Partial evidence “You should expect more from your law firm than only excellent legal counsel.” Source: RevenueBase Database · checked Sep 27, 2026
24	Adams & Reese	Indirect evidence	U.S., United StatesHQ checked Sep 27, 2026	501-1,000	758 contacts →
	Indirect evidence “At Adams & Reese, we take things personally.” Source: RevenueBase Database · checked Sep 27, 2026
25	Kelley Drye & Warren LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	501-1,000	690 contacts →
	Partial evidence “Kelley Drye is an AmLaw 200 law firm of more than 350 lawyers and other professionals practicing in New York, NY; Washington, D.C; Chicago, IL; Houston, TX, Los Angeles, CA; San…” 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 6,715 advertising and marketing law firms based in the United States

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

As of Sep 27, 2026

54.9%Verified-email coverage

21.5Average contacts per company

1-10Median size (employees)

5.9%Largest-city concentration · New York

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

4,274

11-50

1,787

51-200

481

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 6,715 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 the 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 United States 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, 79,194 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

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 the United States?

RevenueBase identified 6,715 advertising and marketing law firms headquartered in the 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?

Cooley LLP, headquartered in Palo Alto, tops this list with the largest team on record.

Which city has the most advertising and marketing law firms?

New York leads with 395 headquartered companies, followed by Los Angeles (201) and Chicago (190).

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 79,194 verified decision-maker contacts tracked across these 6,715 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.