片山 英二 Eiji Katayama
Practice Areas
Career
1973
Graduated from Kyoto University, Faculty of Engineering
1973-1982
Fujisawa Pharmaceutical Company
1982
Entered the Legal Training and Research Institute (36th graduating class)
1982
LLB, Kobe University, Law Faculty
1984
Admitted to the bar (Daiichi Tokyo Bar Association) Joined Ginza Law Office (current Abe, Ikubo & Katayama)
1988-1990
Study and work in the United States and Europe: New York University Law School Winthrop Stimson Putnam & Roberts (New York) Clifford Chance (Paris) Stanbrook Hooper (Brussels) Bristows Cooke and Carpmael (London) Max Planck Institute (Munich)
1989
Admitted to the New York Bar
1990
Return to Japan, Practice at Ginza Law Firm
2002-2007
Professor of Research Center for Advanced Science and Technology, The University of Tokyo
2005-2009
Lecturer of Hitotsubashi University (IP Law)
2005-2009
Lecturer of Waseda University (IP Law)
2007- Professor of MIPLC (Munich Intellectual Property Law Center)
2012- Lecturer of Hitotsubashi University (IP Law)
2016- Professor of Kobe University (The Graduate School of Law)
Memberships
・Former President of AIPPI Japan
・Former President of Tokyo IP American Inn of Court
・Former Chairman of Intellectual Property Law Center of Japan Federation of Bar Association
・Japan Academy of Industrial Property Law
・The Copyright Law Academy of Japan
・AIPLA
・Auditor Board Member for Akatsuki Inc.
Practice Areas
Mr. Katayama has broad experience across a wide area of international and corporate matters, with a focus on intellectual property law and bankruptcy law. The patent litigation that he has worked on to date covers the fields of chemistry, electronics and machinery, which are cross border matters involving advanced technology such as biotechnology, semiconductors etc.. He also has experience in trademark, copyright and unfair competition litigation.
In the field of insolvency, he handled the corporate reorganization cases of Japan Airlines, Azabu, Tsuchiura, Riccar, Maruko, Muramoto Construction and Hokke Club as the trustee or the deputy trustee, and handled the liquidation case of Yamaichi Real Estate as the bankruptcy trustee. He has filed corporate reorganization cases for debtors including Japan Leasing, Life, Daiichi Hotel, Chiyoda Mutual Life Insurance and Kyoei Life Insurance. Mr. Katayama was responsible for overseas operations in the civil rehabilitation of the Sogo group. He has also handled civil rehabilitation as lead counsel for many golf courses, including Nitto Kougyo and Ryokuei, as well as other major debtors in various industries.
In the corporate law area, which often includes cross border matters, Mr. Katayama issues opinion letters on various corporate matters, conducts negotiations on M&A and other transactions, and provides consultations on legal affairs related to management. He also has deep knowledge and experience in the pharmaceutical industry. Mr. Katayama serves as an independent board member for some companies. Further, he provides advice on corporate governance and compliance for many corporations as their retained counsel.
Publications
Books
Show More +Articles
Awards
-
We were highly evaluated in Lexology Index 2026 (formerly Who’s Who Legal)
-
We were highly evaluated in The Legal 500 Asia Pacific – 2026 Edition
-
We were highly evaluated in Chambers Asia-Pacific 2026
-
We were highly evaluated in Asialaw 2025 Rankings
-
We were highly evaluated in Lexology Index (formerly Who’s Who Legal) Japan 2025
-
Our attorneys have been recognized as IP STARS 2025
-
We were highly recognized in IAM Patent 1000 (2025)
-
We were highly evaluated in Benchmark Litigation Asia-Pacific 2025
-
We were highly evaluated in The Best Lawyers in Japan™ 2026 Edition
-
We were highly evaluated in The Legal 500 (2025)
-
We were highly evaluated in Chambers Asia-Pacific 2025
-
We were highly evaluated in Asialaw 2024 Rankings
-
We were highly evaluated in Who’s Who Legal: IP 2024
-
We were highly recognized in IP STARS 2024
-
We were highly recognized in IAM Patent 1000 (2024)
-
We were highly evaluated in Benchmark Litigation Asia-Pacific 2024
-
We were highly evaluated in The Best Lawyers in Japan™ 2025 Edition
-
We were highly evaluated in Who’s Who Legal: Life Sciences 2024
-
We were highly evaluated in Chambers Global 2024
-
We were highly evaluated in The Legal 500 (2024)
-
We were highly evaluated in Chambers Asia-Pacific 2024
-
We were highly evaluated in Asialaw 2023/2024
-
We were highly recognized in IP Stars 2023
-
We were highly recognized in IAM Patent 1000 (2023)
-
We were highly evaluated in Benchmark Litigation Asia-Pacific 2023
-
We were highly evaluated in The Best Lawyers® in Japan 2024 Edition
-
We were highly evaluated in Chambers Global 2023
-
We were highly evaluated in The Legal 500 Asia Pacific (2023)
-
We were highly evaluated in The Nikkei’s “Corporate Legal Tax Affairs and Lawyers Survey 2022”
-
We were highly evaluated in Asialaw 2023
-
Eiji Katayama was selected as Who’s Who Legal: Thought Leaders – Global Elite 2023
-
Eiji Katayama was selected as The A-List: Japan’s Top 100 Lawyers 2022
-
We were highly evaluated in Who’s Who Legal: Japan 2022
-
We were highly evaluated in IAM Patent 1000 (2022)
-
We were highly evaluated in Benchmark Litigation 2022
-
We were highly evaluated in IP STARS 2022
-
We were highly evaluated in The Best Lawyers® in Japan 2023 Edition
-
We were highly evaluated in Chambers Global 2022
-
We were highly evaluated in Chambers Asia-Pacific 2022
-
We were highly evaluated in Asialaw Profiles 2022 and Asialaw Leading Lawyers 2022
-
We were highly evaluated in Who’s Who Legal: Japan 2021
-
Top 50 IP Experts of Japan 2021
-
We were highly evaluated in IAM Patent 1000 (2021)
-
We were highly evaluated in IP STARS 2021
-
We were highly evaluated in The Best Lawyers® in Japan 2022 Edition
-
We were highly evaluated in Chambers Global(2021)
-
We were highly evaluated in Chambers Asia-Pacific 2021
-
We were highly evaluated in Best Lawyers® the 2020 Global Business Edition
-
We were highly evaluated in Who’s Who Legal: Japan 2020
-
We were highly evaluated in Asialaw Profiles 2021 and Asialaw Leading Lawyers 2021
-
Eiji Katayama was selected as The A List: Japan’s Top 100 Lawyers 2020
-
We were highly evaluated in IP STARS 2020
-
We were highly evaluated in IAM Patent 1000 (2020)
-
We were highly evaluated in Best Lawyers® in Japan 2021
-
We were highly evaluated in Chambers Global 2020
-
We were highly evaluated in The Legal 500 (2020)
-
We were highly evaluated in Chambers Asia-Pacific 2020
-
We were highly evaluated in IAM Patent 1000 (2019)
-
We were highly evaluated in Best Lawyers®
-
We were highly evaluated in IP STARS 2019
-
We were highly evaluated in Chambers Global 2019
-
We were highly evaluated in Chambers Asia Pacific 2019
-
We were highly evaluated in Asialaw Leading Lawyers 2019