Yuji Yamaguchi

Yuji Yamaguchi Japan

Member of the arbitral tribunal Expert
Japan Japanese (Japan) Resident in Japan English — Fluent Japanese — Fluent

Surname
Yamaguchi
First name
Yuji
Current professional position
Attorney-at-law
Organisation / firm
Ohno & Partners
Country of residence
Japan
Nationality
Japanese (Japan)
Languages spoken & proficiency
EnglishFluent JapaneseFluent

Arbitrator roles
Member of the arbitral tribunal
Expert
Expert
Professional biography
I started my career at Intellectual Property Division of Toshiba Corporation from 1997, and I have been admitted to the Japanese bar in 2001. I served as Deputy Director of Economic Treaties Division, International Legal Affairs Bureau, Ministry of Foreign Affairs of Japan from 2004 to 2006. I was also seconded to Legal Division of Mitsui & Co., Ltd. from 2015 to 2016. During my private practice at Nishimura & Partners (now Nishimura & Asahi), YUASA AND HARA and Ohno & Partners, I specialized in intellectual property and was involved in many patent litigations in Japan. I have been a Steering Committee member of Japan Intellectual Property Arbitration Center (JIPAC) from 2003 to 2004 and from 2015 to present and served as Steering Committee Chair of Japan Intellectual Property Arbitration Center (JIPAC) from 2024 to 2025. In the area of domain name dispute resolution, I was enlisted to the rosters of Arbitration and Mediation Center of World Intellectual Property Organization (WIPO) and Japan Intellectual Property Arbitration Center (JIPAC) in 2021 and the roster of Asian Domain Name Dispute Resolution Centre (ADNDRC) in 2024.

Arbitrations conducted
50-100
5 years in this role
Role in arbitrations
Sole arbitrator

Legal / dispute expertise
Antitrust / competition law Business & Corporate Law Commercial contracts Copyrights & related rights Damages & valuation Designs Dispute resolution / arbitration practice Licensing & technology transfer National patents Regulatory & compliance (incl. pharma, medical devices, technology) Trade secrets & know-how Trademarks Unfair competition
Technical expertise
Artificial intelligence / data technologies Information and Communication Technology (ICT) Mechanical engineering Medical technology / medical devices Pharmaceutics
Industries
Manufacturing & industrials Pharmaceuticals & life sciences Technology & IT Telecommunications

Bar admission(s)
Japan
Governing law experience
Civil law
Seat of arbitration experience
Tokyo
Mediation style
Facilitative
Brief description

I believe "facultative" is a misspelling of "facilitative." It will likely be necessary to adapt the style of mediation depending on the specific case.

Education (degrees)
LL.M., Cornell Law School 2008, LL.M. The University of Tokyo 1997
Relevant training
Online WIPO Mediation and Arbitration Workshop 2023
Certifications / licenses
Bar Admission: Daiichi Tokyo Bar Association, 2001
Memberships / accreditations
Committee on Intellectual Property, Japan Federation of Bar Associations, since 2002
Institutional panels & memberships
JIPAC – Japan Intellectual Property Arbitration Center WIPO Arbitration and Mediation Center
Publications and/or speaking engagements

“Regarding the Patent Mediation and Arbitration Centre of the Unified Patent Court”, Patent News, No. 16547 (January 2026) (in Japanese); “Out of Court Resolution of Intellectual Property Disputes”, Patent, Vol.78 No.12 (November 2025) (in Japanese); “Trends in Administrative Panel Decisions in Dispute Resolution of Domain Names Containing Personal Names”, Patent News, No. 16080 (February 2024) (in Japanese); “Challenges for Flexible Resolution of Intellectual Property Disputes through Mediation and Arbitration, and for Widespread Use of ODR”, Freedom & Justice, Vol. 74 No. 4 (April 2023) (in Japanese); “Current Status of Domain Name Dispute Resolution and Response to New Issues”, Arbitration & ADR Forum, Vol. 8 (March 2023) (in Japanese); “Potential and Growing Needs for Domain Name Dispute Resolution in Japanese Industries” (Asian Domain Name Dispute Resolution Centre (ADNDRC) Annual Conference, December 2025, Seoul); “Damages Calculation in Japanese Patent Infringement Cases” (EPLAW-JFBA/IP Lawyers Network Japan Joint Meeting, November 2025); “Intellectual Property ADR in Japan in comparison with Indonesia” (20th Training Program for Indonesian Judges in Japan for Assistance for Development of Legal System, July 2025); “Navigating the net in China: trends and developments in online regulation and enforcement (Panel Discussion)” (Asian Domain Name Dispute Resolution Centre (ADNDRC) Annual Conference, December 2024, Hong Kong); “JP Domain Name Dispute Resolution Policy (JP-DRP) and Procedural Features” (Asian Domain Name Dispute Resolution Centre (ADNDRC) Practice Development Workshop, May 2024, Seoul)