Ranking tables
Intellectual Property: Bengoshi | Asia-Pacific
Japan
Rankings overview for Lawyers
- Eiji Katayama Abe, Ikubo & Katayama19 Years Ranked
- Yoshio Kumakura Nakamura & Partners19 Years Ranked
- Ryoichi MimuraMimura & Komatsu
- Kazuhiko Yoshida Nakamura & Partners9 Years Ranked
- Toshiaki IimuraYuasa & Hara
- Wataru SueyoshiSueyoshi & Sato
- Koichi Tsujii Nakamura & Partners18 Years Ranked
Miki Goto Anderson Mori & Tomotsune8 Years Ranked
Shunji Matsuda Nagashima Ohno & Tsunematsu8 Years Ranked
Takamitsu Shigetomi Oh-Ebashi LPC & Partners10 Years Ranked
Yoshikazu Iwase Anderson Mori & Tomotsune19 Years Ranked- Harumi KojoSakurazaka Law Offices
Atsushi Okada Mori Hamada6 Years Ranked
Hitomi Iwase Nishimura & Asahi7 Years Ranked
Junichi Kitahara Abe, Ikubo & Katayama9 Years Ranked- Kei Iida Nakamura & Partners12 Years Ranked
Michiru Takahashi Jones Day16 Years Ranked
Shinsuke Yakura White & Case LLP - White & Case Law Offices (Registered Association)10 Years Ranked
Yutaka Miyoshi Mori Hamada15 Years Ranked- Kensaku FukuiKotto Dori Law Office
- Tsuyoshi SueyoshiYuasa & Hara
- Hideki Takaishi Nakamura & Partners5 Years Ranked
Makoto Hattori Abe, Ikubo & Katayama9 Years Ranked
Makoto Okada TMI Associates1 Years Ranked- Masahiro Samejima Uchida & Samejima Law Firm4 Years Ranked
Yoshiyuki Miyashita Nishimura & Asahi4 Years Ranked- Kensaku YamamotoSHUSAKU·YAMAMOTO
- Tomohiko MakinoSakurazaka Law Offices
- Yusuke InuiKUBOTA
All Lawyers profiles
Senior Statespeople
S Eiji Katayama
Abe, Ikubo & Katayama | Intellectual Property: Bengoshi2026 | Senior Statespeople | 19 Years RankedEiji Katayama is an eminent lawyer whose engineering background serves his patent litigation practice well.
S Yoshio Kumakura
Nakamura & Partners | Intellectual Property: Bengoshi2026 | Senior Statespeople | 19 Years RankedYoshio Kumakura is a venerable figure in the market with a longstanding practice in IP law, including patent infringement proceedings.
- Ryoichi MimuraMimura & Komatsu | Intellectual Property: Bengoshi2026 | Senior Statespeople
Eminent Practitioners
E Kazuhiko Yoshida
Nakamura & Partners | Intellectual Property: Bengoshi2026 | Eminent Practitioners | 9 Years RankedKazuhiko Yoshida is recognised for his extensive experience handling IP litigation. He also advises on matters including licensing and commercial transactions for both Japanese and global clients.- Toshiaki IimuraYuasa & Hara | Intellectual Property: Bengoshi2026 | Eminent Practitioners
- Wataru SueyoshiSueyoshi & Sato | Intellectual Property: Bengoshi2026 | Eminent Practitioners
Band 1
1 Seiji Ohno
Ohno & Partners | Intellectual Property: Bengoshi2026 | Band 1 | 19 Years RankedSeiji Ohno is a highly regarded practitioner and is praised by interviewees for his extensive experience in handling IP litigation and patent-related matters.

1 Yasufumi Shiroyama
Anderson Mori & Tomotsune | Intellectual Property: Bengoshi2026 | Band 1 | 19 Years RankedYasufumi Shiroyama heads Anderson Mori & Tomotsune's intellectual property practice group and is well regarded for his expertise in IP litigation, acting for a range of leading international companies. He regularly handles patent infringement disputes in district and appellate courts in Japan.
Band 2
2 Koichi Tsujii
Nakamura & Partners | Intellectual Property: Bengoshi2026 | Band 2 | 18 Years RankedKoichi Tsujii is a prominent figure who leads on both IP litigation and transactional matters.
2 Miki Goto
Anderson Mori & Tomotsune | Intellectual Property: Bengoshi2026 | Band 2 | 8 Years RankedMiki Goto continues to attract recognition, particularly for handling patent disputes. He draws on his background in science and engineering to guide electronic and technology companies through intellectual property matters at the local and multijurisdictional level.
2 Shunji Matsuda
Nagashima Ohno & Tsunematsu | Intellectual Property: Bengoshi2026 | Band 2 | 8 Years RankedShunji Matsuda has a longstanding IP litigation practice, regularly acting for leading corporations in the electronics, pharmaceuticals and chemical engineering sectors.

2 Takamitsu Shigetomi
Oh-Ebashi LPC & Partners | Intellectual Property: Bengoshi2026 | Band 2 | 10 Years RankedTakamitsu Shigetomi leads the IP group at Osaka-based Oh-Ebashi and is adept at handling IP licensing and litigation mandates, particularly for life sciences and biotechnology clients.

2 Yoshikazu Iwase
Anderson Mori & Tomotsune | Intellectual Property: Bengoshi2026 | Band 2 | 19 Years RankedYoshikazu Iwase is an experienced patent disputes lawyer who represents domestic and international clients in venues including the Tokyo District Court.
Band 3

3 Atsushi Okada
Mori Hamada | Intellectual Property: Bengoshi2026 | Band 3 | 6 Years RankedAtsushi Okada co-heads MHM's IP practice and offers strength in the areas of IP prosecution, enforcement and licensing work for clients from a range of sectors.

3 Hitomi Iwase
Nishimura & Asahi | Intellectual Property: Bengoshi2026 | Band 3 | 7 Years RankedHitomi Iwase co-heads the intellectual property division at Nishimura & Asahi and also handles the full range of IP matters, including trade marks, copyright and patents. Her practice covers both contentious and transactional IP matters.

3 Junichi Kitahara
Abe, Ikubo & Katayama | Intellectual Property: Bengoshi2026 | Band 3 | 9 Years RankedJunichi Kitahara is a well-known lawyer handling complex commercial disputes for both domestic and international clients. His practice covers the pharmaceutical and technology sectors.
3 Kei Iida
Nakamura & Partners | Intellectual Property: Bengoshi2026 | Band 3 | 12 Years RankedKei Iida is a highly reputed IP dispute resolution specialist who handles matters for both domestic and overseas clients.
3 Michiru Takahashi
Jones Day | Intellectual Property: Bengoshi2026 | Band 3 | 16 Years RankedMichiru Takahashi specialises in trademark-related and patent infringement matters, and is a frequent adviser to major corporates in a variety of sectors, including pharmaceuticals, technology, and food and beverages.

3 Shinsuke Yakura
White & Case LLP - White & Case Law Offices (Registered Association) | Intellectual Property: Bengoshi2026 | Band 3 | 10 Years RankedShinsuke Yakura of White & Case handles both advisory and litigation work, especially regarding patents and copyrights. His clients include food and beverage, electric device and automotive manufacturers.

3 Yutaka Miyoshi
Mori Hamada | Intellectual Property: Bengoshi2026 | Band 3 | 15 Years RankedYutaka Miyoshi co-heads Mori Hamada's intellectual property team. He has notable expertise in patent infringement disputes and patent assessments, as well as domain name matters.
Band 4
4 Hideki Takaishi
Nakamura & Partners | Intellectual Property: Bengoshi2026 | Band 4 | 5 Years RankedHideki Takaishi is a well-regarded lawyer who is noted for his ability to handle patent disputes.
4 Makoto Hattori
Abe, Ikubo & Katayama | Intellectual Property: Bengoshi2026 | Band 4 | 9 Years RankedMakoto Hattori is dual-qualified in Japan and New York and represents multinational corporates across a range of patent litigation.

4 Makoto Okada
TMI Associates | Intellectual Property: Bengoshi2026 | Band 4 | 1 Years RankedMakoto Okada is a seasoned IP practitioner. He is particularly adept at handling patent litigation for clients in the electronics and media sectors.
Key sectorsArt and Entertainment|Business and Professional Services|Health and Life Sciences|Industrials, Engineering and Manufacturing|Technology, Media and Telecoms (TMT)4 Masahiro SamejimaUchida & Samejima Law Firm | Intellectual Property: Bengoshi2026 | Band 4 | 4 Years RankedMasahiro Samejima is one of the founding members of Uchida & Samejima Law Firm. He is a patent attorney with metallurgical engineering background and significant industry experience whose technical knowledge and expertise is often noted.

4 Yoshiyuki Miyashita
Nishimura & Asahi | Intellectual Property: Bengoshi2026 | Band 4 | 4 Years RankedYoshiyuki Miyashita co-heads the firm's intellectual property group and has a wide range of expertise, notably assisting clients with IP disputes as well as licensing and matters arising out of transactions.
Up and Coming

U Masayuki Yamanouchi
Anderson Mori & Tomotsune | Intellectual Property: Bengoshi2026 | Up and Coming | 1 Years RankedMasayuki Yamanouchi is an up-and-coming lawyer with a strong scientific background. Highly sought after by pharmaceutical clients, he often represents clients in patent disputes, including patent linkage, invalidation and enforcement.