Company lists · Data refreshed September 2026

Top 25 Constitutional law firms based in New York, United States

Name: Constitutional law firms based in New York, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 8, 2026 150 companies tracked

RevenueBase identified 150 constitutional law firms headquartered in New York, United States as of September 2026 and tracks 2,545 professional contacts across them, including 1,607 with verified work emails and 1,290 with mobile numbers. New York is the largest hub.

This list covers constitutional law firms headquartered in New York, 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 8, 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 8, 2026 86% judged on-target in blind review

150Companies

2,545Contacts tracked

1,607Verified emails

1,290Mobile numbers

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The 25 largest constitutional law firms based in New York, United States

Ranked by team size

Top 25 of 150 constitutional law firms based in New York, United States, ranked by team size, largest first. Data refreshed Sep 8, 2026. RevenueBase Smart Search rates how each company's information relates to constitutional 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	Kelley Drye & Warren LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 8, 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 8, 2026
2	Peckar & Abramson, P.C	Partial evidence	New York, United StatesHQ checked Sep 8, 2026	201-500	247 contacts →
	Partial evidence “For over four decades, Peckar & Abramson has been a leader and innovator in construction law, providing tailored results for its clients – delivered with a commitment to…” Source: RevenueBase Database · checked Sep 8, 2026
3	Outten & Golden LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 8, 2026	51-200	150 contacts →
	Partial evidence “Outten & Golden is a nationally recognized law firm for employees.” Source: RevenueBase Database · checked Sep 8, 2026
4	Hecker Fink LLP	Partial evidence	New York, United StatesHQ checked Sep 8, 2026	51-200	135 contacts →
	Partial evidence “At Hecker Fink LLP, we practice law at the highest level, guided by our core values of integrity, innovation, and excellence.” Source: RevenueBase Database · checked Sep 8, 2026
5	Cowan, Liebowitz & Latman, P.C	Partial evidence	New York, NY, United StatesHQ checked Sep 8, 2026	51-200	94 contacts →
	Partial evidence “We are a boutique full-service firm recognized worldwide in the areas of intellectual property law and litigation.” Source: RevenueBase Database · checked Sep 8, 2026
6	Dorf Nelson & Zauderer LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 8, 2026	51-200	88 contacts →
	Partial evidence “Dorf Nelson & Zauderer LLP is a national law firm with offices in New York, California, and New Jersey, representing corporations, executives, boards, private equity-backed…” Source: RevenueBase Database · checked Sep 8, 2026
7	Siri & Glimstad LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 8, 2026	51-200	79 contacts →
	Indirect evidence “Siri & Glimstad LLP has offices across the country and represents individuals and corporations in federal and state courts nationwide.” Source: RevenueBase Database · checked Sep 8, 2026
8	Mololamken LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 8, 2026	51-200	78 contacts →
	Partial evidence “MoloLamken is a law firm focused exclusively on representing clients in complex disputes.” Source: RevenueBase Database · checked Sep 8, 2026
9	Bursor & Fisher, P.A	Indirect evidence	New York, NY, United StatesHQ checked Sep 8, 2026	11-50	69 contacts →
	Indirect evidence “BURSOR & FISHER lawyers have represented both plaintiffs and defendants in state and federal courts throughout the country, primarily in the fields of telecommunications…” Source: RevenueBase Database · checked Sep 8, 2026
10	Schlam Stone & Dolan LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 8, 2026	11-50	56 contacts →
	Partial evidence “Schlam Stone & Dolan is a preeminent boutique law firm with the experience, creativity, and problem-solving skills to get successful results quickly and efficiently.” Source: RevenueBase Database · checked Sep 8, 2026
11	Bernstein Liebhard LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 8, 2026	11-50	50 contacts →
	Indirect evidence “Bernstein Liebhard LLP represents individual and institutional clients in private and class action litigation.” Source: RevenueBase Database · checked Sep 8, 2026
12	Marc J Bern & Partners LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 8, 2026	11-50	48 contacts →
	Indirect evidence “The partners at Marc J.” Source: RevenueBase Database · checked Sep 8, 2026
13	Kaplan FOX & Kilsheimer LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 8, 2026	11-50	46 contacts →
	Partial evidence “Kaplan Fox is a leading national law firm focusing on complex litigation with offices in New York, San Francisco, Los Angeles, Chicago and New Jersey.” Source: RevenueBase Database · checked Sep 8, 2026
14	Biedermann Hoenig Semprevivo, A Professional Corporation	Partial evidence	New York, NY, United StatesHQ checked Sep 8, 2026	11-50	32 contacts →
	Partial evidence “We are a civil litigation law firm serving domestic and international clients ranging from individuals to multi-national corporations.” Source: RevenueBase Database · checked Sep 8, 2026
15	Neufeld Scheck Brustin Hoffmann & Freudenberger, LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 8, 2026	11-50	25 contacts →
	Indirect evidence “The core practice area of Neufeld Scheck Brustin Hoffmann & Freudenberger, LLP (NSBHF) is federal §1983 wrongful conviction litigation and related state claims.” Source: RevenueBase Database · checked Sep 8, 2026
16	Aidala Bertuna & Kamins PC	Partial evidence	New York, NY, United StatesHQ checked Sep 8, 2026	11-50	25 contacts →
	Partial evidence “Aidala Bertuna & Kamins, PC Attorneys at Law PROVEN LITIGATORS TO ASSERT YOUR RIGHTS Aidala, Bertuna & Kamins is a full-service boutique law firm powered by experienced trial and…” Source: RevenueBase Database · checked Sep 8, 2026
17	Morelli LAW Firm, Pllc	Partial evidence	New York, NY, United StatesHQ checked Sep 8, 2026	11-50	23 contacts →
	Partial evidence “Morelli Law Firm is the preeminent firm for all plaintiff litigation.” Source: RevenueBase Database · checked Sep 8, 2026
18	Kaplan Martin LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 8, 2026	11-50	21 contacts →
	Partial evidence “Kaplan Martin LLP is a civil and commercial litigation, investigations, and strategic advisory law firm.” Source: RevenueBase Database · checked Sep 8, 2026
19	Demidchik LAW Firm, Pllc	Partial evidence	New York, NY, United StatesHQ checked Sep 8, 2026	11-50	20 contacts →
	Partial evidence “Demidchik Law Firm is a rapidly growing mid-sized law firm.” Source: RevenueBase Database · checked Sep 8, 2026
20	Clayman Rosenberg Kirshner & Linder LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 8, 2026	11-50	19 contacts →
	Indirect evidence “Clayman Rosenberg Kirshner & Linder LLP is a nationally-focused legal practice dedicated to guiding individuals and business entities through the challenges posed by criminal…” Source: RevenueBase Database · checked Sep 8, 2026
21	Miller, Leiby & Associates, P.C	Indirect evidence	New York, NY, United StatesHQ checked Sep 8, 2026	11-50	19 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 8, 2026
22	Huth Reynolds LLP	Indirect evidence	New York, United StatesHQ checked Sep 8, 2026	11-50	16 contacts →
	Indirect evidence “We have spent our careers working on major litigations, investigations, and bet-the-company matters for some of the largest public and privately held companies in the world.” Source: RevenueBase Database · checked Sep 8, 2026
23	Petrillo Klein Boxer LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 8, 2026	11-50	15 contacts →
	Indirect evidence “Petrillo Klein + Boxer is a firm dedicated to partner-led client service at the highest level of professional commitment and quality.” Source: RevenueBase Database · checked Sep 8, 2026
24	Mona Shah & Associates Global	Indirect evidence	New York, NY, United StatesHQ checked Sep 8, 2026	11-50	15 contacts →
	Indirect evidence “Mona Shah & Associates Global (MSA Global) is a full-service U.S.” Source: RevenueBase Database · checked Sep 8, 2026
25	Vladeck, Raskin & Clark, P.C	Indirect evidence	New York, NY, United StatesHQ checked Sep 8, 2026	11-50	14 contacts →
	Indirect evidence “Founded in 1949, Vladeck, Raskin & Clark, P.C.” Source: RevenueBase Database · checked Sep 8, 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: constitutional 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 constitutional law firms.
Partial evidence: Its own public description names part of constitutional law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name constitutional 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 150 constitutional law firms based in New York, United States

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Constitutional law firms based in New York, United States at a glance

As of Sep 8, 2026

63.1%Verified-email coverage

50.7%Mobile-number coverage

17.0Average contacts per company

1-10Median size (employees)

101.3%Largest-city concentration · New York

Sep 8, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 10.0d

1,4950–30

10531–60

261–90

090–180

5180+

Company record updated

Median 61.0d

00–30

1,27031–60

96361–90

19790–180

115180+

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 constitutional 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 New York, United States whose own description of what they do matches “constitutional 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 constitutional 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 constitutional law firms, and records with no verified work email. Companies headquartered outside New York 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, 1,607 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 8, 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.

Constitutional law firms by metro in the United States

Constitutional law firms in New York152
Constitutional law firms in Washington94
Constitutional law firms in Los Angeles72
Constitutional law firms in Chicago70
Constitutional law firms in Houston63
Constitutional law firms in Atlanta53
Constitutional law firms in Denver45
Constitutional law firms in Dallas42

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 constitutional 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 constitutional law firms are there based in New York, United States?

RevenueBase identified 150 constitutional law firms headquartered in New York, 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?

Kelley Drye & Warren LLP, headquartered in New York, tops this list with the largest team on record.

Which city has the most constitutional law firms?

New York leads with 152 headquartered companies, followed by Washington (94) and Los Angeles (72).

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 1,607 verified decision-maker contacts tracked across these 150 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 8, 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.