Company lists · Data refreshed September 2026

Top 17 Intellectual property law firms based in Boston, United States

RevenueBase identified 41 intellectual property law firms headquartered in Boston, United States as of September 2026 and tracks 4,008 professional contacts across them, including 2,202 with verified work emails. New York is the largest hub.

This list covers intellectual property law firms headquartered in Boston, 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review
41Companies
4,008Contacts tracked
2,202Verified emails
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The 17 largest intellectual property law firms based in Boston, United States

Ranked by team size
Top 17 of 41 intellectual property law firms based in Boston, United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names intellectual property law firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
Clark Elbing LLPStrong evidence
Boston, MA, United StatesHQ checked Sep 4, 202651-200109

“Clark+Elbing is a top-tier intellectual property (IP) law firm focused on protecting and promoting innovations in life science, chemistry, devices, and diagnostics.”

Source: company website · checked Sep 4, 2026
2Boston, MA, United StatesHQ checked Sep 4, 202651-200100

“Hamilton Brook Smith Reynolds is a leading law firm specializing in intellectual property law.”

Source: company website · checked Sep 4, 2026
3
Lando & Anastasi, LLPIndirect evidence
Boston, MA, United StatesHQ checked Sep 4, 202651-20061

“Lando & Anastasi has received national recognition for our practice, aggressive approach to serving clients' needs, and for our supportive and collaborative firm culture.”

Source: company website · checked Sep 4, 2026
4
Global Prior ARTStrong evidence
Boston, MA, United StatesHQ checked Sep 4, 202651-20046

“For over three decades, Global Prior Art has provided unparalleled support to leading law firms and companies in the areas of intellectual property management and strategic…”

Source: company website · checked Sep 4, 2026
5
Sunstein LLPStrong evidence
Boston, MA, United StatesHQ checked Sep 4, 202651-20044

“Sunstein LLP is a boutique Intellectual Property firm with a 40-year history of success and expertise in all areas of IP law including litigation, patent and trademark…”

Source: company website · checked Sep 4, 2026
6
Cesari And Mckenna, LLPStrong evidence
Boston, MA, United StatesHQ checked Sep 4, 202611-5036

“Cesari and McKenna is an intellectual property law firm representing clients ranging from individuals to emerging and established companies.”

Source: company website · checked Sep 4, 2026
7Boston, MA, United StatesHQ checked Sep 4, 202611-5011

“At the law firm of Gilman, McLaughlin & Hanrahan, LLP, we have been serving individuals and businesses in and around Boston, eastern Massachusetts and Cape Cod since 1975.”

Source: company website · checked Sep 4, 2026
8
Hsuanyeh LAW Group PCPartial evidence
Boston, MA, United StatesHQ checked Sep 4, 20261-1010

“The Hsuanyeh Law Group (“HLG”) was founded by inventor-entrepreneur Hsuanyeh Chang, with a doctorate in theoretical physics and extensive experience in patent preparation…”

Source: company website · checked Sep 4, 2026
9
The Jacobs Law, LLCPartial evidence
Boston, MA, United StatesHQ checked Sep 4, 20261-104

“The Jacobs Law, LLC is a Boston-based business litigation & corporate law firm that provides high-quality, cost-conscious legal services to businesses, entrepreneurs, and…”

Source: company website · checked Sep 4, 2026
10Boston, MA, United StatesHQ checked Sep 4, 202611-503

“A high-tech patent boutique law firm with an established history, and an innovative future.”

Source: company website · checked Sep 4, 2026
11
Patent GC LLCStrong evidence
Boston, MA, United StatesHQ checked Sep 4, 20261-103

“Patent GC is a partner only, innovative intellectual property firm, whose attorneys strategically and efficiently manage and execute their clients' intellectual property…”

Source: company website · checked Sep 4, 2026
12
Pakrooh LAWIndirect evidence
Boston, MA, United StatesHQ checked Sep 4, 20261-103
Source: company website · checked Sep 4, 2026
13Boston, MA, United StatesHQ checked Sep 4, 202651-2001

“Sennott, Williams & Rogers, LLP is a company based out of BOSTON, MA, United States.”

Source: company website · checked Sep 4, 2026
14
Works Of The MindPartial evidence
Boston, MA, United StatesHQ checked Sep 4, 20261-101

“WORKS OF THE MIND is a law firm that represents technology producers and consumers - developers, vendors, purchasers, and users of products and services having ideas, information…”

Source: company website · checked Sep 4, 2026
15
Kramer LAW LLCPartial evidence
Boston, United StatesHQ checked Sep 4, 20261-101

“An experienced, knowledgeable litigator, Andrea Kramer of Kramer Law works in partnership with individuals, businesses, and nonprofit organizations to resolve legal disputes…”

Source: company website · checked Sep 4, 2026
16
Full Draw Legal, LLCIndirect evidence
Boston, United StatesHQ checked Sep 4, 20261-101

“Headquartered in Boston, MA, Full Draw Legal is your dedicated business partner for legal and business guidance.”

Source: company website · checked Sep 4, 2026
17
Patshegen IP LLCIndirect evidence
Boston, MA, United StatesHQ checked Sep 4, 20261-101

“PatShegen IP was established by a group of young, determined, and motivated Patent practitioners who have served as Attorneys and Agents in leading international IP firms.”

Source: company website · checked Sep 4, 2026

Showing 17 of 41 intellectual property law firms based in Boston, United States

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Intellectual property law firms based in Boston, United States at a glance

As of Sep 4, 2026
1-10Median size (employees)
New YorkLargest hub · 276 HQs
Contacts with mobile numbers
Sep 4, 2026Data refreshed

Companies by employee count

1-10
22
11-50
9
51-200
7
501-1,000
2
1,001-5,000
1

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 Boston, over 41 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 intellectual property law firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Boston, United States whose own description of what they do matches “intellectual property law firms”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among intellectual property law firms, and records with no verified work email. Companies headquartered outside Boston 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 an evidence 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, 2,202 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 4, 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.

Frequently asked

How many intellectual property law firms are there based in Boston, United States?

RevenueBase identified 41 intellectual property law firms headquartered in Boston, 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?

Clark Elbing LLP, headquartered in Boston, tops this list with the largest team on record.

Which city has the most intellectual property law firms?

New York leads with 276 headquartered companies, followed by Chicago (121) and Washington (117).

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 2,202 verified decision-maker contacts tracked across these 41 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 4, 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 SmartSearch, 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.