People

SUEYOSHI, Tsuyoshi

[Division & Section] Law Division

Partner

2006 Admission as Attorney-at-law in Japan
2002-2005 and since 2008 Admission as Patent Attorney

Telephone: +81-80-2216-0973
Email: tsueyoshi@yuasa-hara.co.jp

Practice Areas

Unfair Competition　Copyright Law　General Corporate　Cross-border Practices　Intellectual Property　Patents　Designs　Trademarks

Major Areas of Expertise

Intellectual Property (contentious and litigation (infringement, revocation actions against JPO’s decision at the IP high court and invalidation actions at the JPO) and transaction), General Corporate (contract matters (ex. license, co-research and development, contract manufacturing and clinical development); Pharmaceutical Affairs

Membership & Other Qualifications

Japan Federation of Bar Associations; Daiichi Tokyo Bar Association; Japan Association of Industrial Property Law; The Copyright Law Association of Japan; AIPPI-JAPAN; Case A hazardous materials engineer

Education & Experience

Academic History

1992
Department of Chemistry, School of Science, The University of Tokyo (BS)
1997
Department of Chemistry, Graduate school of Science, The University of Tokyo (Ph.D.)
2006
Legal Training & Research Institute

Job History

1997-2002
Mitsubishi Chemical Corporation, Yokohama Research Center
2002-2005
Yuasa and Hara, Patent Division as Patent Attorney
2006-present
Yuasa and Hara

Professional Experiences & Activities

2012-present
WG member of Q229 (The use of prosecution history in post-grant patent proceeding), Q235 (Term of copy right protection), Q241 (IP licensing and insolvency), Q246 (Exceptions and limitations to copyright protection for libraries, archives and educational and research institutions) and 2016-copyright (Liking and making available on the internet) of AIPPI-Japan
2013-2015,2020-2022
Lectureship in Japan Patent Attorney Association’s course of infringement qualification
2015-present
Advisory board of infringement judgment (Ministry of Economy, Trade and Industry; Unfair Competition Prevention Act)
2015-2023
Member of AIPPI Q224 Standing Committee（"Enforcement"）
2018
Vice-Chair of AIPPI World Congress and Chairperson of AIPPI-Japan WG group for Study Question “Joint Liability”
2020
Chairperson of AIPPI-Japan WG group for Study Question “Rights in Data”
2023
Chairperson of AIPPI-Japan WG group for Study Question 287“Responsibility of online marketplaces for online infringement”
2023-
Member of AIPPI Communications Committee (Statutory Committee)
2025
Chairperson of AIPPI-Japan WG group for Study Question 296: “Preliminary Injunctions: Requirements for compensating damage suffered by Defendant”

Awards & Achievements

・IAM Patent 1000
　Global Leader 2025
　Litigation, Japan: Domestic 2019-2025
　Transactions, Japan: Domestic 2024-2025
　Trade secret, Japan: Domestic 2025

・Chambers Global
　Intellectual Property: Domestic in Japan 　 2020-2025

・Chambers Asia-Pacific
　Intellectual Property: Domestic in Japan　　2020-2025
　Life Sciences in Japan　　　　　　　　　　　2019-2025

・Lexology Index (formerly Who’s Who Legal) IP-Patents 2022-2025

・Lexology Index (formerly Who’s Who Legal) Healthcare and Life Sciences – Patent Litigation 2024-2025

・Lexology Index (formerly Who’s Who Legal): Japan
　Life Sciences 2016-2025
　Intellectual Property 2022-2025

・IP Stars 2021-2025, Japan (Patent Star)

・IAM and WTR: The Global IP Awards 2024
　The Japan Patent Litigation Firm of the Year

・Shortlisted in Practitioner of the Year (Japan), Managing IP Asia-Pacific Awards 2023

・“Best Performing Lawyers Rankings 2022” in the “Corporate Legal & Tax Affairs and Lawyer Survey” by the NIKKEI (the Nihon Keizai Shimbun)
12th in the category of Intellectual Properties, selected by companies

・Judgement of Tokyo D. Ct., Dec. 20, 2022, HANREI TIMES, No.1516, p.216 (passing off; indication of goods or service by shape of goods)

・Nippon Chemiphar v. Shionogi and AstraZeneca; Judgement of IP High Ct. (Grand Panel), April 13, 2018, HANREI TIMES No.1460, p.125 (Case 2016 (gyo-ke) 10182 and 10184)
(IP high court judgment of Crestor® case; Standing to sue and Inventive steps (finding of prior art invention in chemistry))

・JPO v. Genentech; MINSHU Vol.69, No.7, p.1912, Judgment of Sup. Ct., Nov. 17, 2015, Case 2014 (gyou-hi) 356
(Supreme Court judgment of Bevacizumab (Avastin® ) case; Patent Term Extension (SPC))

・Genetech v. JPO; Judgment of IP High Ct. (Grand Panel), May 30, 2014, HANREI JIHO, No. 2232, p.3 (Case 2013 (gyou-ke)10195-10198)
(IP high court judgment of Bevacizumab (Avastin® ) case; Patent Term Extension (SPC))

・Judgement of IP H. Ct., Sep. 25, 2014, HANREI JIHO, No.2241, p.142 (Patent Term Extension (SPC))

・Judgement of Tokyo D. Ct., Mar. 20, 2014, HANREI JIHO, No.2254, p.91

・Comments on Media
NIKKEI (June 30, 2025, June 15, 2024, December 28, 2021)
The Yomiuri Shimbun（July 3, 2024, May 31, 2024）
KYODO News（March 4, 2025）

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Section 206, Shin-Otemachi Bldg.
2-1, Otemachi 2-Chome
Chiyoda-Ku, Tokyo 100-0004, Japan
Tel.81-3-3270-6641
Fax.81-3-3246-0233

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