Attorney profiles

Eiji Katayama


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)


  • 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
  • Board Member for Seikagaku Corporation
  • Director / Audit and Supervisory Committee Member of Mitsubishi UFJ Trust and Banking Corporation
  • Auditor Board Member for Akatsuki Inc.

Main Areas of Practice

Katayama works in wide areas of international and corporate matters with a focus on intellectual property law and bankruptcy law. The patent litigation that he has participated in to date, covers the fields of chemistry, electronics and machinery, which involve advanced technology such as biotechnology, semiconductors etc, and which are cross border matters. He also has experiences 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 liquidation case of Yamaichi Real Estate as the trustee in bankruptcy. He filed the corporate reorganization cases for the debtors including Japan Leasing, Life, Daiichi Hotel, Chiyoda Mutual Life Insurance and Kyoei Life Insurance. Also, in the civil rehabilitation of the Sogo group, he was in charge of the overseas operation. He 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 often including cross border matters, he gives opinion letters on various corporate matters, conducts negotiations on M&A and other transaction, and provides consultations on legal affairs related to management. He also has deep knowledge and experience in the pharmaceutical industry.

For companies such as Seikagaku Corporation and Mitsubishi UFJ Trust and Banking Corporation, he serves as an independent board member. Further, he provides advice on corporate governance and compliance for many corporations as their retained counsel.


  • "The Recent Trend of U.S. Supreme Court's Judgements on Patent Litigation" Issue No.1 2019, Vol.69 Chizai Kanri (Intellectual Property Management) (co-author)
  • "Exercise of Avoidance Power" in "Corporate Reorganization Law /Civil Rehabilitation"
  • New Court Practice Structure 21 (Published by Seirin Shoin in November 2004)
  • "Test for Generic Drugs and Research Exemption– the Case of Therapeutic Agents for Patients with Pancreatic Diseases" in " 3rd Edition of 100 Leading Patent Cases" Supplementary Issue No. 170 Jurist February 2004 (Yuhikaku)
  • "Commencement of Reorganization Procedure and License Agreements" in "Theory and Practice for the New Corporate Reorganization Law" Hanrei Times No. 1132 (extra edition)
    (Published by Hanrei Times on December 10, 2003)
  • "Recent Trends in Biotech Patent Litigation" Issue No. 1 2002, Vol. 52 Chizai Kanri (Intellectual Property Management)
  • "Parallel Imports" in "Intellectual Property Related Civil Procedure", New Court Practice Structure 4", Seirin Shoin (Published December 10, 2001)