Company lists · Data refreshed September 2026

Top 25 Software patent law firms based in Los Angeles, United States

Name: Software patent law firms based in Los Angeles, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 160 companies tracked

RevenueBase identified 160 software patent law firms headquartered in Los Angeles, United States as of September 2026 and tracks 2,719 professional contacts across them, including 1,219 with verified work emails. New York is the largest hub.

This list covers software patent law firms headquartered in Los Angeles, 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 6, 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 6, 2026 86% judged on-target in blind review

160Companies

2,719Contacts tracked

1,219Verified emails

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The 25 largest software patent law firms based in Los Angeles, United States

Ranked by team size

Top 25 of 160 software patent law firms based in Los Angeles, United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to software patent 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	Irell & Manella LLP	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	201-500	258 contacts →
	“Irell & Manella LLP is a law firm focused on complex commercial and IP litigation.” Source: company website · checked Sep 6, 2026
2	Mitchell Silberberg & Knupp LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	201-500	255 contacts →
	“Since 1908, MSK has displayed an ability to understand the complex, demystify the mysterious, and define the unknown.” Source: company website · checked Sep 6, 2026
3	Musick, Peeler & Garrett	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	201-500	204 contacts →
	“Musick Peeler, a premier law firm with over 80 attorneys across five offices in major commercial centers of California, exemplifies excellence in legal service.” Source: company website · checked Sep 6, 2026
4	Glaser Weil	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	51-200	172 contacts →
	“Glaser Weil is a premier law firm headquartered in Los Angeles with outstanding experience and market-leading successes in litigation, corporate, intellectual property and real…” Source: company website · checked Sep 6, 2026
5	Sheppard	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	1,001-5,000	165 contacts →
	“Businesses turn to Sheppard to deliver sophisticated counsel to help clients move ahead.” Source: company website · checked Sep 6, 2026
6	Haight Brown & Bonesteel	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	51-200	157 contacts →
	“From civil litigation to business transactions, Haight Brown & Bonesteel LLP provides practical and effective resolution advice to the most perplexing disputes, ranging from early…” Source: company website · checked Sep 6, 2026
7	Russ, August & Kabat	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	51-200	75 contacts →
	“Russ August & Kabat was founded in 1990 by Larry Russ, Rick August and Jules Kabat.” Source: company website · checked Sep 6, 2026
8	Ellis George LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	51-200	71 contacts →
	“Ellis George LLP is a leader in business litigation that has been providing creative solutions, efficient teamwork and fearless advocacy to its clients for over 40 years.” Source: company website · checked Sep 6, 2026
9	Hill, Farrer & Burrill LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	51-200	67 contacts →
	“Hill Farrer attorneys have successfully handled thousands of transactions and won thousands of cases.” Source: company website · checked Sep 6, 2026
10	Zuber Lawler	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	51-200	67 contacts →
	“Zuber Lawler is one of the more selective law firms in the United States, representing clients throughout the world from locations across the country.” Source: company website · checked Sep 6, 2026
11	King, Holmes, Paterno & Soriano, LLP	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	11-50	56 contacts →
	“The attorneys at King, Holmes, Paterno & Soriano, LLP provide innovative thinking, cutting edge deal making and powerful litigation and business strategies to our clients.” Source: company website · checked Sep 6, 2026
12	LTL Attorneys LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	51-200	29 contacts →
	“Trusted by general counsel of leading global companies, our highly skilled lawyers focus solely on trials and litigation.” Source: company website · checked Sep 6, 2026
13	Koletsky Mancini Feldman LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	11-50	29 contacts →
	“Koletsky, Mancini, Feldman & Morrow was founded in 1987 with one goal in mind, to provide its clients with the highest quality legal services in the most cost effective manner…” Source: company website · checked Sep 6, 2026
14	DTO LAW	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	11-50	28 contacts →
	“Founded by former Big Law attorneys, DTO Law is an elite boutique with offices in Los Angeles, Silicon Valley, and New York, though our attorneys handle cases and matters across…” Source: company website · checked Sep 6, 2026
15	Gipson Hoffman & Pancione	Partial evidence	Los Angeles, United StatesHQ checked Sep 6, 2026	11-50	28 contacts →
	“Gipson Hoffman & Pancione (GHP) is a boutique law firm committed to serving its clients with deep expertise, strategic insight, and meticulous attention to detail.” Source: company website · checked Sep 6, 2026
16	Parker Shaffie LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	11-50	25 contacts →
	“Parker Shaffie LLP has represented international, national and local clients for almost three decades.” Source: company website · checked Sep 6, 2026
17	Waymaker LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	11-50	24 contacts →
	“Waymaker LLP is known for winning trials and appeals across the county for clients that include Fortune 500 companies, startups and high net-worth individuals.” Source: company website · checked Sep 6, 2026
18	Kubota & Basol LLP	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	11-50	24 contacts →
	“We provide highest-quality patent legal services with the agility and flexibility to sustainably meet our clients' patent needs into the future.” Source: company website · checked Sep 6, 2026
19	Foundation LAW Group LLP	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	11-50	23 contacts →
	“Foundation Law Group LLP is a boutique law firm specializing in mergers and acquisitions, startups, securities, digital media, entertainment, intellectual property, real estate…” Source: company website · checked Sep 6, 2026
20	Leech Tishman Nelson Hardiman	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	11-50	22 contacts →
	“Leech Tishman Nelson Hardiman is a national, full-service law firm dedicated to assisting businesses, institutions, and individuals.” Source: company website · checked Sep 6, 2026
21	Willenken LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	11-50	19 contacts →
	“Willenken is a premier boutique litigation firm renowned for our attorneys’ formidable trial capabilities and innovative strategic acumen.” Source: company website · checked Sep 6, 2026
22	Valle Makoff LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	11-50	19 contacts →
	“Valle Makoff LLP provides business litigation and related transactional advice to corporate, fiduciary and individual clients in federal and state courts, arbitrations and in…” Source: company website · checked Sep 6, 2026
23	Park Lawless & Tremonti LLP	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	11-50	17 contacts →
	“With more than a century of combined experience at some of the preeminent Am Law 50 international law firms, our lawyers bring extensive experience in complex litigation and…” Source: company website · checked Sep 6, 2026
24	Fragner Seifert Pace & Mintz, LLP	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	11-50	13 contacts →
	“Fragner Seifert Pace & Mintz, LLP (FSPM) was founded nearly 20 years ago with one simple mission: provide the highest quality legal services to real estate and business clients to…” Source: company website · checked Sep 6, 2026
25	Cypress LLP	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 6, 2026	11-50	13 contacts →
	“An innovative law firm serving companies and entrepreneurs in litigation and trials, intellectual property, M&A, and finance.” Source: company website · checked Sep 6, 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: software patent 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 software patent law firms.
Partial evidence: Its own public description names part of software patent law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name software patent 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 160 software patent law firms based in Los Angeles, United States

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Software patent law firms based in Los Angeles, United States at a glance

As of Sep 6, 2026

44.8%Verified-email coverage

17.0Average contacts per company

1-10Median size (employees)

202.5%Largest-city concentration · New York

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

104

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Los Angeles, over 160 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 software patent 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 Los Angeles, United States whose own description of what they do matches “software patent 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 software patent 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 software patent law firms, and records with no verified work email. Companies headquartered outside Los Angeles 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, 1,219 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 6, 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.

Software patent 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 software patent 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 software patent law firms are there based in Los Angeles, United States?

RevenueBase identified 160 software patent law firms headquartered in Los Angeles, 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?

Irell & Manella LLP, headquartered in Los Angeles, tops this list with the largest team on record.

Which city has the most software patent law firms?

New York leads with 324 headquartered companies, followed by Chicago (175) and Los Angeles (160).

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 1,219 verified decision-maker contacts tracked across these 160 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 6, 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.