Company lists · Data refreshed September 2026

Top 25 Software attorneys based in the United States

Name: Software attorneys based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 910 companies tracked

RevenueBase identified 910 software attorneys headquartered in the United States as of September 2026 and tracks 12,562 professional contacts across them, including 7,121 with verified work emails. New York is the largest hub.

This list covers software attorneys 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 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

910Companies

12,562Contacts tracked

7,121Verified emails

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The 25 largest software attorneys based in the United States

Ranked by team size

Top 25 of 910 software attorneys based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to software attorneys: 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	Kilpatrick Townsend & Stockton LLP	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,558 contacts →
	Indirect evidence “Kilpatrick is trusted counsel to the world’s most innovative companies.” Source: RevenueBase Database · checked Sep 21, 2026
2	Fenwick & West	Indirect evidence	Silicon Valley, CA, United StatesHQ checked Sep 21, 2026	501-1,000	1,126 contacts →
	Indirect evidence “Fenwick is a leading law firm, purpose-built to guide visionary tech and life sciences companies and their investors through every stage of growth, from startups securing their…” Source: RevenueBase Database · checked Sep 21, 2026
3	Knobbe Martens	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	501-1,000	606 contacts →
	Indirect evidence “Knobbe Martens protects the ideas that drive innovation and propel our world forward.” Source: RevenueBase Database · checked Sep 21, 2026
4	Wolf Greenfield	Indirect evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	201-500	428 contacts →
	Indirect evidence “Wolf, Greenfield & Sacks, P.C.” Source: RevenueBase Database · checked Sep 21, 2026
5	Banner Witcoff	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 21, 2026	201-500	288 contacts →
	Indirect evidence “For more than 100 years Banner Witcoff has provided sound protection and inventive intellectual property solutions for some of the world’s most innovative organizations.” Source: RevenueBase Database · checked Sep 21, 2026
6	Effectual Services	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	201-500	242 contacts →
	Indirect evidence “Effectual Services is a well established and fast growing patent and legal support services company having experience and expertise in providing patent and legal services.” Source: RevenueBase Database · checked Sep 21, 2026
7	Cantor Colburn LLP	Indirect evidence	Hartford, CT, United StatesHQ checked Sep 21, 2026	201-500	222 contacts →
	Indirect evidence “Cantor Colburn LLP is one of the largest intellectual property specialty law firms in the country, providing clients worldwide with the complete range of IP legal services…” Source: RevenueBase Database · checked Sep 21, 2026
8	Fross Zelnick Lehrman & Zissu	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	51-200	182 contacts →
	Indirect evidence “Fross Zelnick is consistently recognized by clients and peers as one of the top IP law firms in the world.” Source: RevenueBase Database · checked Sep 21, 2026
9	Dority & Manning, P.A	Indirect evidence	Greenville, SC, United StatesHQ checked Sep 21, 2026	51-200	181 contacts →
	Indirect evidence “Formed in 1984, Dority & Manning is a full-service intellectual property law firm.” Source: RevenueBase Database · checked Sep 21, 2026
10	Munck Wilson Mandala LLP	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 21, 2026	51-200	180 contacts →
	Indirect evidence “Munck Wilson Mandala is a technology-focused law firm with offices in Dallas, Austin, Houston, Waco, Texas; Los Angeles, California; and South Florida.” Source: RevenueBase Database · checked Sep 21, 2026
11	Mcandrews, Held & Malloy, LTD	Indirect evidence	Chicago, United StatesHQ checked Sep 21, 2026	51-200	162 contacts →
	Indirect evidence “McAndrews, Held & Malloy is a premier, full-service intellectual property and technology law firm.” Source: RevenueBase Database · checked Sep 21, 2026
12	Leydig, Voit & Mayer, LTD	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 21, 2026	51-200	157 contacts →
	Indirect evidence “Leydig, Voit & Mayer remains at the forefront of intellectual property law, providing advice and counsel in intellectual property litigation, licensing, and prosecution services…” Source: RevenueBase Database · checked Sep 21, 2026
13	OBLON	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	201-500	156 contacts →
	Indirect evidence “Companies across the world depend on Oblon to help them establish, leverage and protect their intellectual property assets in the United States and abroad.” Source: RevenueBase Database · checked Sep 21, 2026
14	Workman Nydegger	Indirect evidence	Salt Lake City, UT, United StatesHQ checked Sep 21, 2026	51-200	153 contacts →
	Indirect evidence “Founded over 40 years ago, Workman Nydegger specializes in intellectual property (IP) law and complex litigation.” Source: RevenueBase Database · checked Sep 21, 2026
15	Patterson Sheridan, LLP	Indirect evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	51-200	148 contacts →
	Indirect evidence “Patterson + Sheridan is a technology law firm specializing in the protection of client’s assets and rights, and does so by providing variety of services including: patent…” Source: RevenueBase Database · checked Sep 21, 2026
16	Seed IP LAW Group	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	51-200	140 contacts →
	Indirect evidence “Seed IP provides comprehensive legal assistance in all areas of intellectual property, including patents, trademarks, copyrights, trade secrets and unfair competition…” Source: RevenueBase Database · checked Sep 21, 2026
17	The Webb LAW Firm	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 21, 2026	51-200	133 contacts →
	Indirect evidence “The most innovative corporations in the world entrust The Webb Law Firm to safeguard their Intellectual Property.” Source: RevenueBase Database · checked Sep 21, 2026
18	Birch, Stewart, Kolasch & Birch, LLP Bskb	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 21, 2026	51-200	127 contacts →
	Indirect evidence “Since 1976, BSKB has been providing a full range of intellectual property law services to clients in the areas of patent prosecution, post-grant review, litigation, ITC…” Source: RevenueBase Database · checked Sep 21, 2026
19	LEE & Hayes, P.C	Indirect evidence	Spokane, WA, United StatesHQ checked Sep 21, 2026	51-200	118 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
20	Kenyon & Kenyon LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	n/a	117 contacts →
	Indirect evidence “Kenyon & Kenyon LLP is a leading intellectual property law firm whose sophisticated and business-oriented approach helps clients succeed with their intellectual property…” Source: RevenueBase Database · checked Sep 21, 2026
21	Maschoff Brennan	Partial evidence	Park City, UT, United StatesHQ checked Sep 21, 2026	51-200	97 contacts →
	Partial evidence “If you’re looking for a group of Intellectual Property attorneys who are smart enough to understand your vision, compassionate enough to appreciate your ingenuity, and wise enough…” Source: RevenueBase Database · checked Sep 21, 2026
22	Young Basile Hanlon & Macfarlane, P.C	Indirect evidence	Troy, MI, United StatesHQ checked Sep 21, 2026	51-200	95 contacts →
	Indirect evidence “With offices in Michigan, California, Illinois, Massachusetts, Pennsylvania, and Texas Young Basile provides strategic intellectual property and litigation services to global and…” Source: RevenueBase Database · checked Sep 21, 2026
23	Rothwell Figg	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	94 contacts →
	Indirect evidence “Rothwell Figg is a forward-thinking, client-focused law firm practicing at the convergence of intellectual property, litigation, and technology.” Source: RevenueBase Database · checked Sep 21, 2026
24	Conley Rose, P.C	Indirect evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	51-200	92 contacts →
	Indirect evidence “Conley Rose is a leading intellectual property-only law firm that has been maximizing the value of clients’ intellectual property in the U.S.” Source: RevenueBase Database · checked Sep 21, 2026
25	Oliff PLC	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	51-200	88 contacts →
	Indirect evidence “Oliff PLC is a boutique law firm focused exclusively on protecting our clients’ intellectual property rights.” 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: software attorneys. 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 attorneys.
Partial evidence: Its own public description names part of software attorneys, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name software attorneys. 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 910 software attorneys based in the United States

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Software attorneys based in the United States at a glance

As of Sep 21, 2026

56.7%Verified-email coverage

13.8Average contacts per company

1-10Median size (employees)

6.2%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

664

11-50

183

51-200

201-500

501-1,000

1,001-5,000

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 910 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 attorneys, 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 “software attorneys”. 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 attorneys), 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 attorneys, 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, 7,121 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.

Software attorneys 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 software attorneys, 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 attorneys are there based in the United States?

RevenueBase identified 910 software attorneys 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?

Kilpatrick Townsend & Stockton LLP, headquartered in Atlanta, tops this list with the largest team on record.

Which city has the most software attorneys?

New York leads with 56 headquartered companies, followed by Washington (35) and Chicago (26).

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 7,121 verified decision-maker contacts tracked across these 910 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.