Company lists · Data refreshed September 2026
Top 15 Patent law firms based in Boston, United States
RevenueBase identified 27 patent law firms headquartered in Boston, United States as of September 2026 and tracks 2,052 professional contacts across them, including 1,163 with verified work emails. New York is the largest hub.
This list covers patent 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 5, 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.
The 15 largest patent law firms based in Boston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,167 | ||||
“As the leading intellectual property law firm, we help innovators change the world through our unmatched litigation, prosecution, and post-grant experience across venues and…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 428 | ||||
“Wolf, Greenfield & Sacks, P.C.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 104 | ||||
“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 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 100 | ||||
“Hamilton Brook Smith Reynolds is a leading law firm specializing in intellectual property law.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | Lando & Anastasi, LLPIndirect evidence | 62 | |||
“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 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 47 | ||||
“Caldwell is a premier global law firm at the forefront of innovation and legal excellence delivering best-in class intellectual property, litigation, and corporate advice.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | Sunstein LLPStrong evidence | 44 | |||
“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 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 36 | ||||
“Cesari and McKenna is an intellectual property law firm representing clients ranging from individuals to emerging and established companies.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 10 | ||||
“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 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | Mitchell & DesimonePartial evidence | 4 | |||
“Mitchell & DeSimone is a law firm specializing in litigation, located in Boston, Massachusetts.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | The Jacobs Law, LLCPartial evidence | 4 | |||
“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 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | Patent GC LLCPartial evidence | 3 | |||
“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 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | Behmke Innovation Group LLCStrong evidence | 1 | |||
“A high-tech patent boutique law firm with an established history, and an innovative future.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | Full Draw Legal, LLCIndirect evidence | 1 | |||
“Headquartered in Boston, MA, Full Draw Legal is your dedicated business partner for legal and business guidance.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | Patshegen IP LLCPartial evidence | 1 | |||
“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 5, 2026Thanks. The Data Team will review it. | |||||
Showing 15 of 27 patent law firms based in Boston, United States
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Patent law firms based in Boston, United States at a glance
As of Sep 5, 2026Companies by employee count
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 27 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 patent 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 “patent 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 patent 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, 1,163 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 5, 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.
Patent law firms by metro in the United States
- Patent law firms in New York114
- Patent law firms in Washington82
- Patent law firms in Chicago72
- Patent law firms in Los Angeles55
- Patent law firms in Houston52
- Patent law firms in Dallas50
- Patent law firms in Atlanta45
- Patent law firms in Austin43
- Patent law firms in San Diego38
- Patent law firms in San Francisco35
- Patent law firms in Irvine32
- Patent law firms in Seattle30
- Patent law firms in Alexandria29
- Patent law firms in Minneapolis29
- Patent law firms in Boston27
- Patent law firms in Miami26
Frequently asked
How many patent law firms are there based in Boston, United States?
RevenueBase identified 27 patent 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?
Fish & Richardson P.C, headquartered in Boston, tops this list with the largest team on record.
Which city has the most patent law firms?
New York leads with 114 headquartered companies, followed by Washington (82) and Chicago (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 1,163 verified decision-maker contacts tracked across these 27 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 5, 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.