Company lists · Data refreshed September 2026

Top 25 Ad law firms worldwide

Name: Ad law firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 31,861 companies tracked

RevenueBase identified 31,861 company matches for ad law firms worldwide as of September 2026 and tracks 410,214 professional contacts across them, including 160,324 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for ad law firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 21, 2026. Country and city lists for ad law firms follow the table.

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 RevenueBase SmartSearch · Exact Recorded Sep 21, 2026 How this list was built

31,861Companies

410,214Contacts tracked

160,324Verified emails

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The 25 largest ad law firms worldwide

Ranked by team size

Top 25 of 31,861 company matches for ad law firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Skadden, Arps, Slate, Meagher & Flom LLP And Affiliates	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	1,001-5,000	4,540 contacts →
	Exact match “Skadden, Arps, Slate, Meagher & Flom LLP and Affiliates delivers the highest quality advice and novel solutions to legal challenges, enabling clients to achieve their business…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	Cooley LLP	Exact match	Palo Alto, CA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	3,341 contacts →
	Exact match “Clients partner with Cooley on transformative deals, complex IP and regulatory matters, and high-stakes litigation.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	Gordon Rees Scully Mansukhani, LLP	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	2,846 contacts →
	Exact match “As the only full-service law firm with offices and attorneys in all 50 states, Gordon Rees Scully Mansukhani delivers maximum value to our clients by combining the resources of a…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	Perkins Coie	Exact match	Seattle, WA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	2,746 contacts →
	Exact match “Perkins Coie has combined with Ashurst to form Ashurst Perkins Coie.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	Husch Blackwell	Exact match	20+ U.s. Offices, United StatesHQ recorded Sep 21, 2026	1,001-5,000	2,539 contacts →
	Exact match “Husch Blackwell is a different kind of law firm–structured around our clients’ industries and built on a culture of selfless service.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6	Arnold & Porter	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	1,001-5,000	2,333 contacts →
	Exact match “Arnold & Porter combines sophisticated regulatory, litigation, and transactional capabilities to resolve clients’ most complex issues.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	Nelson Wilians Advogados	Exact match	São Paulo, BrazilHQ recorded Sep 21, 2026	1,001-5,000	2,267 contacts →
	Exact match “Desde a NWADV transforma desafios jurídicos complexos em decisões mais seguras para empresas nacionais e internacionais.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	Dechert LLP	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	2,041 contacts →
	Exact match “Dechert is the law firm that helps business leaders lead.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	Nelson Mullins Riley & Scarborough	Exact match	Columbia, SC, United StatesHQ recorded Sep 21, 2026	1,001-5,000	2,012 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	Slaughter And MAY	Exact match	London, United KingdomHQ recorded Sep 21, 2026	1,001-5,000	1,951 contacts →
	Exact match “Slaughter and May is regarded as one of the most prestigious law firms in the world.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	Venable LLP	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,790 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	Clayton UTZ	Exact match	Sydney, AustraliaHQ recorded Sep 21, 2026	1,001-5,000	1,787 contacts →
	Exact match “We are one of Australia's oldest and largest law firms, with offices in six cities, nearly 200 partners, and a full range of legal services for large private sector and government…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Vinson & Elkins	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,693 contacts →
	Exact match “Vinson & Elkins is a law firm of global distinction, working with leading companies on wide-ranging matters in key industries across the economy.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	Ballard Spahr LLP	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,682 contacts →
	Exact match “Ballard Spahr LLP, an Am Law 100 law firm with more than 750 lawyers in 19 U.S.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Crowell & Moring	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,602 contacts →
	Exact match “Crowell & Moring is an international law firm with operations in the United States, Europe, MENA, and Asia.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	Tozzinifreire Advogados	Exact match	São Paulo, BrazilHQ recorded Sep 21, 2026	1,001-5,000	1,580 contacts →
	Exact match “TozziniFreire is one of the leading legal services organizations in Latin America, operating in all areas of Business Law and with a significant track record in serving national…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	Blake, Cassels & Graydon LLP	Exact match	Toronto, ON, CanadaHQ recorded Sep 21, 2026	1,001-5,000	1,555 contacts →
	Exact match “At Blake, Cassels & Graydon LLP (Blakes), we serve a diverse national and international client base.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	Katten Muchin Rosenman LLP	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,495 contacts →
	Exact match “Katten is a full-service law firm with nearly 650 attorneys in locations across the United States and in London and Shanghai.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	KIM & Chang	Exact match	Sajik-ro 8-gil, South KoreaHQ recorded Sep 21, 2026	1,001-5,000	1,451 contacts →
	Exact match “Kim & Chang is a globally recognized law firm based in Korea.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	Clark Hill LAW	Exact match	Detroit, MI, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,343 contacts →
	Exact match “At Clark Hill, our value proposition is simple.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	Quarles & Brady LLP	Exact match	Milwaukee, WI, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,318 contacts →
	Exact match “For over 125 years, Quarles & Brady LLP has provided quality legal services to a wide range of industries on a national stage.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	Pinheiro Neto Advogados	Exact match	São Paulo, BrazilHQ recorded Sep 21, 2026	1,001-5,000	1,250 contacts →
	Exact match “Pinheiro Neto Advogados é um escritório brasileiro com sólida experiência em mais de 40 áreas do Direito Empresarial.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	Urbano Vitalino Advogados	Exact match	Sao Paulo, BrazilHQ recorded Sep 21, 2026	1,001-5,000	1,242 contacts →
	Exact match “Com 88 anos de experiência, o Urbano Vitalino Advogados tem como marca sua vasta tradição jurídica.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	Snell & Wilmer	Exact match	Phoenix, AZ, United StatesHQ recorded Sep 21, 2026	501-1,000	1,219 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Jenner & Block	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	501-1,000	1,194 contacts →
	Exact match “At Jenner & Block, we shape what’s next through experience, vision, and judgment.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “ad law firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 31,861 ad law firms worldwide

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Ad law firms worldwide at a glance

As of Sep 21, 2026

39.1%Verified-email coverage

12.9Average contacts per company

1-10Median size (employees)

3.6%Largest-city concentration · Sao Paulo

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

21,098

11-50

8,629

51-200

1,505

201-500

320

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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.
Coverage: Every country. Country and city lists for ad law firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “ad law firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 160,324 professional contacts with verified work emails across the full matched dataset. 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 21, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Ad law firms by location

180 lists · largest first

Every Ad law firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “ad law firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many ad law firms are there worldwide?

RevenueBase identified 31,861 company matches for ad law firms worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Skadden, Arps, Slate, Meagher & Flom LLP And Affiliates tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most ad law firms?

The United States leads with 5,740 companies, followed by Brazil (4,748) and India (1,632). Every ad law firms list by country and city is linked on this page.

Which city has the most ad law firms?

Sao Paulo leads with 1139 company records, followed by Paris (555) and New Delhi (409).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 160,324 professional contacts with verified work emails tracked across these 31,861 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 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.