Company lists · Data refreshed September 2026

Top 25 Mechanical patent firms based in New York, United States

RevenueBase identified 47 mechanical patent firms headquartered in New York, United States as of September 2026 and tracks 1,085 professional contacts across them, including 402 with verified work emails. Washington is the largest hub.

This list covers mechanical patent 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 20, 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 20, 2026 86% judged on-target in blind review
47Companies
1,085Contacts tracked
402Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest mechanical patent firms based in New York, United States

Ranked by team size
Top 25 of 47 mechanical patent firms based in New York, United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to mechanical patent 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceNew York, NY, United StatesHQ checked Sep 20, 2026201-500242 contacts →

Partial 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 20, 2026
2Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 202651-200182 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 20, 2026
3Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 2026n/a117 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 20, 2026
4Partial evidenceNew York, NY, United StatesHQ checked Sep 20, 202651-200100 contacts →

Partial evidence

“HG Law LLP (formerly Haley Guiliano LLP) is an international intellectual property law firm specializing in patent law from offices in London, New York and Silicon Valley.”

Source: RevenueBase Database · checked Sep 20, 2026
5Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 202651-20085 contacts →

Indirect evidence

“Since 1953, Amster, Rothstein & Ebenstein LLP has focused exclusively on representing clients in all facets of intellectual property law both domestically and internationally.”

Source: RevenueBase Database · checked Sep 20, 2026
6Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 202611-5034 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 20, 2026
7Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 202611-5028 contacts →

Indirect evidence

“Lucas & Mercanti is an intellectual property law firm.”

Source: RevenueBase Database · checked Sep 20, 2026
8Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 202651-20026 contacts →

Indirect evidence

“Ostrolenk Faber is a premier intellectual property boutique law firm.”

Source: RevenueBase Database · checked Sep 20, 2026
9Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 202611-5021 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 20, 2026
10Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 202611-5017 contacts →

Indirect evidence

“Large publicly traded companies and cutting-edge startups trust Gish PLLC to handle their most intricate IP matters.”

Source: RevenueBase Database · checked Sep 20, 2026
11Partial evidenceNew York, NY, United StatesHQ checked Sep 20, 202611-5012 contacts →

Partial evidence

“Fay Kaplun & Marcin, LLP specializes in Intellectual Property (IP) Law, assisting clients with identifying, analyzing and protecting IP, including patents, trademarks, copyrights…”

Source: RevenueBase Database · checked Sep 20, 2026
12Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 202611-509 contacts →

Indirect evidence

“LGC is a New York City-based boutique law firm specializing in intellectual property litigation, prosecution, and related business and technology matters.”

Source: RevenueBase Database · checked Sep 20, 2026
13Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 202611-508 contacts →

Indirect evidence

“Our firm advises and counsels clients on a wide range of intellectual property issues in various industries, including pharmaceutical, retail, food services, publishing, apparel…”

Source: RevenueBase Database · checked Sep 20, 2026
14Partial evidenceNew York, NY, United StatesHQ checked Sep 20, 20261-107 contacts →

Partial evidence

“Sisun Law, PLLC offers legal services in the fields of trademark, copyright, and patent law.”

Source: RevenueBase Database · checked Sep 20, 2026
15Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 20261-107 contacts →

Indirect evidence

“Intellectual Property Counseling and Legal Services”

Source: RevenueBase Database · checked Sep 20, 2026
16Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 20261-106 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 20, 2026
17Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 20261-105 contacts →

Indirect evidence

“Grant Attorneys at Law PLLC is a business and intellectual property law firm.”

Source: RevenueBase Database · checked Sep 20, 2026
18Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 20261-103 contacts →

Indirect evidence

“Kroub, Silbersher & Kolmykov PLLC (KSK IP Law) is a high-end intellectual property boutique focused on providing premier litigation services at flat, predictable rates.”

Source: RevenueBase Database · checked Sep 20, 2026
19Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 20261-102 contacts →

Indirect evidence

“We rigorously protect global trademark portfolios, enforce and defend trademarks and copyrights, and negotiate complex IP agreements for the world’s leading brands, innovators and…”

Source: RevenueBase Database · checked Sep 20, 2026
20Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 20261-102 contacts →

Indirect evidence

“IntelleTek Law Group, PLLC provides advice and procurement services concerning U.S.”

Source: RevenueBase Database · checked Sep 20, 2026
21Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 20261-101 contacts →

Indirect evidence

“Dr.”

Source: RevenueBase Database · checked Sep 20, 2026
22Indirect evidenceNew York, United StatesHQ checked Sep 20, 20261-101 contacts →

Indirect evidence

“IP Legal Services”

Source: RevenueBase Database · checked Sep 20, 2026
23Partial evidenceNew York, NY, United StatesHQ checked Sep 20, 20261-101 contacts →

Partial evidence

“THE BREUER LAW FIRM Specializing in Patent Protection for Software and Computer-Related Inventions At The Breuer Law Firm, we focus on helping small businesses, startups…”

Source: RevenueBase Database · checked Sep 20, 2026
24Partial evidenceNew York, NY, United StatesHQ checked Sep 20, 20261-101 contacts →

Partial evidence

“Hard IP is a new kind of patent firm; it represents a paradigm shift that will rock the tech world.”

Source: RevenueBase Database · checked Sep 20, 2026
25Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 20261-101 contacts →

Indirect evidence

“Kinhal Law is a strategic intellectual property law firm helping businesses protect, commercialize, and maximize the value of their intellectual property assets.”

Source: RevenueBase Database · checked Sep 20, 2026

Showing 25 of 47 mechanical patent firms based in New York, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 402 reachable decision-makers.

Free signup · no credit card

View the full list →

Mechanical patent firms based in New York, United States at a glance

As of Sep 20, 2026
37.1%Verified-email coverage
23.1Average contacts per company
1-10Median size (employees)
112.8%Largest-city concentration · Washington
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
31
11-50
9
51-200
6
201-500
1

Email recency for this list is measured across the whole United States list rather than for New York, so it is reported there. Company counts and contact totals on this page are exact for New York, over 47 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 mechanical patent 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 “mechanical patent 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 mechanical patent 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 mechanical patent 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, 402 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 20, 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.

Mechanical patent 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 mechanical patent 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 mechanical patent firms are there based in New York, United States?

RevenueBase identified 47 mechanical patent 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?

Effectual Services, headquartered in New York, tops this list with the largest team on record.

Which city has the most mechanical patent firms?

Washington leads with 53 headquartered companies, followed by New York (47) and Chicago (42).

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 402 verified decision-maker contacts tracked across these 47 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 20, 2026.

Ready to reach these companies? Verified emails and direct dials for all 47 mechanical patent firms based in New York, United States. Start with a free account, no credit card.

Download this list →

Related lists

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.