Yoshiyuki Mori

Education / Work

• 1979 Graduated from Faculty of Law, University of Tokyo
• 1981-1991: Assistant Judge at Tokyo District Court, attached to the Civil Affairs Bureau of the General Secretariat of the Supreme Court, Assistant Judge at Morioka District and Family Court
• 1986-1987: Studied in the UK as an overseas research fellow for assistant judges.
• 1991-1994 Judge, Osaka District Court [Administrative Tax Division]
• 1994-1998 Judge at Nagoya District Court [Administrative and Intellectual Property Division]
• 1998-2003: Judge of the Tokyo District Court [Presiding Judge of the Intellectual Property Division]
• 2003-2006: Supreme Court Research Officer [Intellectual Property Cases, General Civil Cases]
• Judge of the Intellectual Property High Court, 2006-2010
• 2010-2012: Judge at Yokohama District Court [Presiding Judge, Traffic Division]
• 2012-2014 Chief Judge of Wakayama District Family Court
• 2014-2017 Judge of the Osaka High Court (Presiding Judge)
• 2017-2021: Judge (Presiding Judge) of the Intellectual Property High Court  
• Summary Court Judge, 2022-2026
• Registered with the First Tokyo Bar Association in 2026.

Books and papers

• "Sales and Distribution Rights of Used Game Software [Used Software Case]," *One Hundred Selected Copyright Cases, 7th Edition* (Yuhikaku, 2025)
• "Scope of Trial in an Appeal for Annulment of a Trial Decision [Knitting Machines]," *Selected Patent Cases, 6th Edition*, Yuhikaku, 2025)
• "The Scope of Establishing a Tort," in *Essays Commemorating Professor Ryoichi Mimura's 70th Birthday: Pioneering the Future of Intellectual Property Law* (Nihon Hyoronsha, 2024).
• "Consideration of 'Effect' in Determining the Inventive Step of a Patented Invention," in *Collected Essays Commemorating Professor Setsu Shimizu's 70th Birthday: Towards the Future of Diversifying Intellectual Property Litigation* (Nihon Kajo Shuppan, 2023).
• "The requirement for defensive trademark registration: 'widely recognized among consumers' [JOURNAL STADARD case]," *100 Selected Trademark, Design, and Unfair Competition Cases, 2nd Edition* (Yuhikaku, 2020)
• "On the Recognition of Inventions Described in Publications in the Judgment of Novelty and Inventive Step," *Essays Commemorating Professor Eiji Katayama's 70th Birthday: New Trends in Business Law* (Seirin Shoin, 2020)
• "Arguments based on Article 104-3 of the Patent Act and requests for patent invalidation trials in patent infringement lawsuits," in *Collected Essays in Commemoration of Professor Toshiaki Iimura's Retirement: Modern Intellectual Property Law: Practice and Issues* (Japan Institute of Invention and Innovation, 2015).
• "The Intersection of Infringement Lawsuits and Lawsuits for Annulment of Trial Decisions," *Revised Edition: Practice of Intellectual Property Litigation* (Japan Federation of Lawyers, 2014)
• "The binding force of annulment judgments," *Specialized Litigation Course 6: Patent Litigation, Volume 2* (Minjiho Kenkyukai, 2012)
• "The Relationship Between Infringement Lawsuits and Lawsuits for Annulment of Trial Decisions," *Latest System of Trial Practice 10: Intellectual Property Litigation II* (Seirin Shoin, 2018)
• "The Admissibility of Claims of New Prior Art in Patent Appeals: Citation Examples and Well-Known Technology," *Collected Essays in Commemoration of Professor Makino's 80th Birthday: Intellectual Property Law and Proposals* (Seirin Shoin, 2012)
• "Claim Interpretation (1)," *Modern Intellectual Property Law Lecture Series II: Practical Developments in Intellectual Property Law* (2012)
• "Damages 3 (Multiple Infringers/Multiple Rights Holders)" from "Legal Progressive Series: Intellectual Property Litigation" (Seirin Shoin, 2008)
• "Intellectual Property Litigation and Document Production Orders" (co-authored), *Comprehensive Series on Civil Evidence Law, Vol. 4, Specific Topics II* (Seirin Shoin, 2004)
• "Judicial Research Report, Vol. 54, No. 2: A Study on Expediting the Trial of Patent Infringement Lawsuits" (co-authored) (Japan Federation of Bar Associations, 2003)
• "Practical Issues When Procedures for Amending the Specification or Drawings are Made While a Patent Infringement Lawsuit is Pending," in *Collected Essays Commemorating Professor Toshihiro Akiyoshi's 77th Birthday: Intellectual Property Rights: Their Formation and Protection* (Shin Nippon Hoki Publishing, 2002).
• "Works written for professional purposes," *New Compendium of Judicial Practice: Copyright Litigation Law* (Seirin Shoin, 2004)
• "Determination of the Technical Scope of a Patented Invention," *New Comprehensive Guide to Judicial Practice: Intellectual Property Litigation Law* (Seirin Shoin, 2001)
• "On the Subject Matter of Lawsuits in Copyright Infringement Cases," *Modern Judicial Law Series 26: Intellectual Property Rights* (Shin Nippon Hoki, 1999)
• "Judicial Research Report, Vol. 47, No. 1: The Operation of Civil Procedure in the United Kingdom" (co-authored) (Japan Federation of Bar Associations, 1996)
• Many others