Company lists · Data refreshed September 2026

Top 25 Licensing law firms based in Japan

RevenueBase identified 81 licensing law firms headquartered in Japan as of September 2026 and tracks 1,014 professional contacts across them, including 331 with verified work emails. Tokyo is the largest hub.

This list covers licensing law firms headquartered in Japan, 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 14, 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 14, 2026 86% judged on-target in blind review
81Companies
1,014Contacts tracked
331Verified emails
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The 25 largest licensing law firms based in Japan

Ranked by team size
Top 25 of 81 licensing law firms based in Japan, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to licensing 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceTokyo, JapanHQ checked Sep 14, 20261,001-5,000247 contacts →

Partial evidence

“TMI Associates is one of Japan’s largest law firms, with more than 700 attorneys, patent attorneys, foreign lawyers and other professionals.”

Source: RevenueBase Database · checked Sep 14, 2026
2Indirect evidence港区, JapanHQ checked Sep 14, 2026201-500197 contacts →

Indirect evidence

“BUSINESS LAWYERS VISION Drive a paradigm shift for the better world.”

Source: RevenueBase Database · checked Sep 14, 2026
3Indirect evidence新宿区西新宿7-7-6, JapanHQ checked Sep 14, 202651-20056 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 14, 2026
4Indirect evidenceChiyoda-ku, JapanHQ checked Sep 14, 202651-20037 contacts →

Indirect evidence

“Miura & Partners was founded in January 2019 by Mr.”

Source: RevenueBase Database · checked Sep 14, 2026
5Indirect evidenceChiyoda-ku, JapanHQ checked Sep 14, 2026201-50031 contacts →

Indirect evidence

“SUGIMURA & Partners, founded in 1923 as Sugimura International Patent & Trademark Attorneys, is a leading IP firm.”

Source: RevenueBase Database · checked Sep 14, 2026
6Indirect evidenceMinato, JapanHQ checked Sep 14, 202611-5030 contacts →

Indirect evidence

“NGB Corporation is a legal services company based out of Minato, Tokyo, Japan.”

Source: RevenueBase Database · checked Sep 14, 2026
7Partial evidenceShinjuku-ku, JapanHQ checked Sep 14, 202651-20022 contacts →

Partial evidence

“Our Firm: SONODA & KOBAYASHI, an intellectual property law firm, offers dependable legal services for intellectual property in Japan and in China.”

Source: RevenueBase Database · checked Sep 14, 2026
8Partial evidenceTokyo, JapanHQ checked Sep 14, 202651-20020 contacts →

Partial evidence

“Nozomi Sogo is a medium-sized Japanese law firm based in Tokyo and Los Angeles, providing with a wide range of legal services, including corporate transactions, business disputes…”

Source: RevenueBase Database · checked Sep 14, 2026
9Partial evidenceTokyo, JapanHQ checked Sep 14, 202651-20019 contacts →

Partial evidence

“Our main work areas are litigation, intellectual property law, business rehabilitation and insolvency, corporate compliance matters, international legal matters, M&A, finance law…”

Source: RevenueBase Database · checked Sep 14, 2026
10Partial evidenceTokyo, JapanHQ checked Sep 14, 202651-20017 contacts →

Partial evidence

“Momo-o, Matsuo & Namba (“MMN”) is a full-service corporate law firm renowned for providing indispensable legal services.”

Source: RevenueBase Database · checked Sep 14, 2026
11Partial evidenceTokyo, JapanHQ checked Sep 14, 20261-1016 contacts →

Partial evidence

“This law firm is one of the top, in the field of technology legal (IP/IT) matter.”

Source: RevenueBase Database · checked Sep 14, 2026
12Indirect evidenceTokyo, JapanHQ checked Sep 14, 20261-1010 contacts →

Indirect evidence

“Authense IP is a group of patent attorneys with abundant experience in domestic and foreign IP enrollment, that enables us to provide quality service working closely with clients…”

Source: RevenueBase Database · checked Sep 14, 2026
13Partial evidenceTokyo, JapanHQ checked Sep 14, 202611-5010 contacts →

Partial evidence

“CREO Law & Intellectual Property was established in 1978, and now has a full-time staff of approximately 50 personnel, including 13 patent attorneys, 3 lawyers and a native…”

Source: RevenueBase Database · checked Sep 14, 2026
14Indirect evidenceChiyodaku, JapanHQ checked Sep 14, 2026201-50010 contacts →

Indirect evidence

“Established in 1998 by Mr.”

Source: RevenueBase Database · checked Sep 14, 2026
15Indirect evidenceTokyo, JapanHQ checked Sep 14, 202651-2009 contacts →

Indirect evidence

“On January 1, Primeworks IP Attorneys began services to assist clients with intellectual property related matters.”

Source: RevenueBase Database · checked Sep 14, 2026
16Partial evidenceTokyo, JapanHQ checked Sep 14, 202611-509 contacts →

Partial evidence

“Kéisén Associates, formerly Omori & Yaguchi, is a Tokyo-based Japanese intellectual property law firm with offices in Tokyo, Philadelphia and New York City.”

Source: RevenueBase Database · checked Sep 14, 2026
17Indirect evidenceMita, JapanHQ checked Sep 14, 20261-107 contacts →

Indirect evidence

“We are a group of professionals specializing in cross-border matters.”

Source: RevenueBase Database · checked Sep 14, 2026
18Partial evidenceChiyoda-ku, JapanHQ checked Sep 14, 202611-507 contacts →

Partial evidence

“GI & T Law Office delivers practical and business-focused legal solutions through a team of internationally experienced lawyers.”

Source: RevenueBase Database · checked Sep 14, 2026
19Indirect evidenceChiyoda-ku, JapanHQ checked Sep 14, 202611-506 contacts →

Indirect evidence

“Our firm provides a practical strategy based on vast experience.”

Source: RevenueBase Database · checked Sep 14, 2026
20Partial evidence大阪市, JapanHQ checked Sep 14, 202611-505 contacts →

Partial evidence

“Innoventier is a group of Japanese law firm and patent office specializing in intellectual property laws and general corporate matters.”

Source: RevenueBase Database · checked Sep 14, 2026
21Indirect evidence横浜市西区みなとみらい2-2-1, JapanHQ checked Sep 14, 202611-504 contacts →

Indirect evidence

“In the heart of Minatomirai, Yokohama, Olive International Patent Office was established on October 1, 2003.”

Source: RevenueBase Database · checked Sep 14, 2026
22Indirect evidence阿倍野区, JapanHQ checked Sep 14, 2026201-5003 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 14, 2026
23Indirect evidenceChiyoda-ku, JapanHQ checked Sep 14, 202611-502 contacts →

Indirect evidence

“Tass Meister Patent Firm consists of patent attorneys and technical experts possessing advanced knowledge in their specialized areas.”

Source: RevenueBase Database · checked Sep 14, 2026
24Partial evidenceChuo-ku, JapanHQ checked Sep 14, 20261-102 contacts →

Partial evidence

“Akasaka International law, Patent & Accounting Office is commited to the highest standard of professional excellence in providing a complete package of legal, financial management…”

Source: RevenueBase Database · checked Sep 14, 2026
25Indirect evidenceTokyo, JapanHQ checked Sep 14, 20261-101 contacts →

Indirect evidence

“Intellectual Property Professionals We provide professional IP service to Japanese clients and foreign clients.”

Source: RevenueBase Database · checked Sep 14, 2026

Showing 25 of 81 licensing law firms based in Japan

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 331 reachable decision-makers.

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Licensing law firms based in Japan at a glance

As of Sep 14, 2026
32.6%Verified-email coverage
12.5Average contacts per company
11-50Median size (employees)
46.9%Largest-city concentration · Tokyo
Sep 14, 2026Page data refreshed

Companies by employee count

1-10
33
11-50
21
51-200
18
201-500
6
501-1,000
1
1,001-5,000
1

Email recency for this list is measured worldwide rather than for Japan, so it is reported there. Company counts and contact totals on this page are exact for Japan, over 81 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 licensing 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 Japan whose own description of what they do matches “licensing 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 licensing 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 licensing law firms, and records with no verified work email. Companies headquartered outside Japan 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, 331 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 14, 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.

Licensing law firms by metro

  • Licensing law firms in Tokyo38

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 licensing 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 licensing law firms are there based in Japan?

RevenueBase identified 81 licensing law firms headquartered in Japan 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?

TMI Associates, headquartered in Tokyo, tops this list with the largest team on record.

Which city has the most licensing law firms?

Tokyo leads with 38 headquartered companies, followed by Jing (12) and Da Ban Shi Da Ban Fu (2).

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 331 verified decision-maker contacts tracked across these 81 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 14, 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.