Company lists · Data refreshed September 2026

Top 25 Big international law firms based in San Diego, United States

Name: Big international law firms based in San Diego, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 86 companies tracked

RevenueBase identified 86 big international law firms headquartered in San Diego, United States as of September 2026 and tracks 1,409 professional contacts across them, including 814 with verified work emails. New York is the largest hub.

This list covers big international law firms headquartered in San Diego, 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 21, 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 21, 2026 86% judged on-target in blind review

86Companies

1,409Contacts tracked

814Verified emails

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The 25 largest big international law firms based in San Diego, United States

Ranked by team size

Top 25 of 86 big international law firms based in San Diego, United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to big international 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	Procopio, Cory, Hargreaves & Savitch LLP	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	201-500	413 contacts →
	Indirect evidence “Procopio is committed to helping clients reach their full potential while striving always to provide the highest level of client service.” Source: RevenueBase Database · checked Sep 21, 2026
2	Klinedinst PC	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	51-200	185 contacts →
	Partial evidence “Klinedinst has become the go-to law firm across the Western U.S, providing exceptional legal services in litigation, trial, and transactional law.” Source: RevenueBase Database · checked Sep 21, 2026
3	Wilson Turner Kosmo LLP	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	51-200	112 contacts →
	Partial evidence “Wilson Turner Kosmo is the largest certified women-owned law firm in San Diego, and one of the largest in California.” Source: RevenueBase Database · checked Sep 21, 2026
4	Seltzer Caplan Mcmahon Vitek	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	51-200	100 contacts →
	Indirect evidence “Since our founding in 1948, Seltzer Caplan McMahon Vitek has dedicated itself to serving as advocates for our clients and our community.” Source: RevenueBase Database · checked Sep 21, 2026
5	Solomon Ward Seidenwurm & Smith LLP	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	51-200	64 contacts →
	Indirect evidence “Solomon Ward’s legal team is dedicated to achieving excellence in the eyes of our clients, and we have consistently succeeded in this endeavor since 1977.” Source: RevenueBase Database · checked Sep 21, 2026
6	Mehlman Jacobs LLP	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	11-50	48 contacts →
	Partial evidence “Mehlman Jacobs, a California Limited Liability Partnership, limited to the practice of immigration law, is a member of Ernst & Young Global Limited and is independently owned and…” Source: RevenueBase Database · checked Sep 21, 2026
7	Duckor Metzger & Wynne, Aplc	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	11-50	43 contacts →
	Partial evidence “Founded in 1978, Duckor Metzger & Wynne, A Professional Law Corporation (DMW) is an AV-rated, full-service, San Diego-based law firm representing clients across a broad range of…” Source: RevenueBase Database · checked Sep 21, 2026
8	Sapochnick LAW Firm	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	11-50	37 contacts →
	Partial evidence “The Sapochnick Law Firm is a firm wholly dedicated to US and Global immigration law and the highest personal and ethical standard of client service.” Source: RevenueBase Database · checked Sep 21, 2026
9	Dunn Desantis Walt & Kendrick, LLP	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	11-50	34 contacts →
	Partial evidence “Dunn DeSantis Walt & Kendrick, LLP is a Southern California civil law firm providing legal counsel to businesses and professionals, locally and nationally.” Source: RevenueBase Database · checked Sep 21, 2026
10	Rosing Pott & Strohbehn	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	11-50	30 contacts →
	Indirect evidence “RPS strives to provide its clients with best-in-class legal solutions at competitive boutique firm rates.” Source: RevenueBase Database · checked Sep 21, 2026
11	Sullivan Hill	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	51-200	27 contacts →
	Partial evidence “As one of San Diego’s longest standing business and trial law firms, Sullivan Hill has grown and evolved over the years as our local economy and business landscape has changed.” Source: RevenueBase Database · checked Sep 21, 2026
12	Witham Mahoney & Abbott, LLP	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	1-10	19 contacts →
	Indirect evidence “At Witham Mahoney & Abbott, we are helping clients build strong businesses, make sound investments, and ensure their professional and personal interests are protected along the…” Source: RevenueBase Database · checked Sep 21, 2026
13	Mlo, A Professional Corporation	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	1-10	18 contacts →
	Partial evidence “MLO specializes in patent law and intellectual property services for a wide variety of industries including but not limited to medical devices, software, semiconductors, solar…” Source: RevenueBase Database · checked Sep 21, 2026
14	Ipla, LLP	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	11-50	15 contacts →
	Partial evidence “IPLA, LLP is a law practice company based out of EASTGATE MALL SUITE 200, SAN DIEGO, California, United States.” Source: RevenueBase Database · checked Sep 21, 2026
15	The Naumann LAW Firm, PC	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	1-10	9 contacts →
	Partial evidence “The Naumann Law Firm is a team of highly qualified professionals, including lawyers, legal assistants, paralegals and support staff.” Source: RevenueBase Database · checked Sep 21, 2026
16	Nicholas & Tomasevic, LLP	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	1-10	9 contacts →
	Indirect evidence “Nicholas & Tomasevic, LLP represents businesses and individuals in litigation across a spectrum of specialized practice areas, including employment and consumer class actions…” Source: RevenueBase Database · checked Sep 21, 2026
17	The Coopersmith LAW Firm, LLP	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	1-10	9 contacts →
	Partial evidence “The Coopersmith Law Firm, LLP represents individuals and businesses at all stages of litigation, and advises clients on methods to avoid and minimize the risk of litigation.” Source: RevenueBase Database · checked Sep 21, 2026
18	Charmasson, Buchaca & Leach, LLP	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	1-10	8 contacts →
	Partial evidence “Charmasson, Buchaca & Leach is an intellectual property and civil litigation law firm in San Diego with over 30 years of experience successfully representing individuals, small…” Source: RevenueBase Database · checked Sep 21, 2026
19	Trestle LAW	Partial evidence	San Diego, United StatesHQ checked Sep 21, 2026	1-10	7 contacts →
	Partial evidence “Trestle Law, APC is a premier, full-service law firm based in San Diego, California.” Source: RevenueBase Database · checked Sep 21, 2026
20	The Casas LAW Firm, PC	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	1-10	7 contacts →
	Partial evidence “The Casas Law Firm, PC is committed to delivering innovative and successful solutions to your legal issues.” Source: RevenueBase Database · checked Sep 21, 2026
21	Noonanlance	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	11-50	6 contacts →
	Indirect evidence “Strategic.” Source: RevenueBase Database · checked Sep 21, 2026
22	Chalifoux, Brast, Thompson & Potocki, APC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	11-50	6 contacts →
	Indirect evidence “Headquartered in San Diego, California, CBTP works with clients on both the plaintiff and defense sides of a variety of disputes throughout California.” Source: RevenueBase Database · checked Sep 21, 2026
23	Lewis Kohn & Walker LLP	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	1-10	6 contacts →
	Partial evidence “An intellectual property law firm based in California.” Source: RevenueBase Database · checked Sep 21, 2026
24	Delmore Greene LLP	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	1-10	5 contacts →
	Partial evidence “Delmore Greene is a full-service business law firm in San Diego.” Source: RevenueBase Database · checked Sep 21, 2026
25	Mcnamara Smith LLP	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	1-10	5 contacts →
	Indirect evidence “McNamara Smith LLP is a small firm of accomplished attorneys with a national practice in white collar criminal defense, securities enforcement, and civil litigation matters.” Source: RevenueBase Database · checked Sep 21, 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: big international 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 big international law firms.
Partial evidence: Its own public description names part of big international law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name big international 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 86 big international law firms based in San Diego, United States

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Big international law firms based in San Diego, United States at a glance

As of Sep 21, 2026

57.8%Verified-email coverage

16.4Average contacts per company

1-10Median size (employees)

701.2%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for San Diego, so it is reported there. Company counts and contact totals on this page are exact for San Diego, over 86 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 big international 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 San Diego, United States whose own description of what they do matches “big international 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 big international 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 big international law firms, and records with no verified work email. Companies headquartered outside San Diego 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, 814 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 21, 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.

Big international 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 big international 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 big international law firms are there based in San Diego, United States?

RevenueBase identified 86 big international law firms headquartered in San Diego, 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?

Procopio, Cory, Hargreaves & Savitch LLP, headquartered in San Diego, tops this list with the largest team on record.

Which city has the most big international law firms?

New York leads with 603 headquartered companies, followed by Chicago (239) and Los Angeles (219).

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 814 verified decision-maker contacts tracked across these 86 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 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 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.