Attorney Profiles
Attorney at Law, Patent Attorney
Eiji Katayama

Graduated from Kyoto University, Faculty of Engineering


Fujisawa Pharmaceutical Company


Entered the Legal Training and Research Institute (36th graduating class)


LLB, Kobe University, Law Faculty


Admitted to the bar (Daiichi Tokyo Bar Association) Joined Ginza Law Office (current Abe, Ikubo & Katayama)


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)


Admitted to the New York Bar


Return to Japan, Practice at Ginza Law Firm


Professor of Research Center for Advanced Science and Technology, The University of Tokyo


Lecturer of Hitotsubashi University (IP Law)


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)


・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
・Auditor Board Member for Akatsuki Inc.

Main Areas of Practice

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 and Articles

・”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)