Yoshikazu Iwase

Yoshikazu Iwase


Yoshikazu Iwase joined Anderson Mori & Tomotsune after working with an intellectual property firm in Tokyo for three years. His litigation experience involves a number of patent infringement trials and revocation suits against the trial decisions of the Japanese Patent Office concerning patentability/validity of patents over various technologies. He has also been involved with a wide range of trademark/trade dress and copyright infringement suits, licensing and IP assets transfer transactions, and dispute resolution. Mr. Iwase has provided a wide range of advice regarding U.S. patent infringement issues in Japan. His experience also includes drafting and negotiating licensing, patent and various intellectual property transfer agreements, transactions and due diligence of intellectual property in the course of M&A deals.

Iwase Yoshikazu

Practice Areas

Practice Groups

  • Intellectual Property Law Group
  • Life Science Chemical Practice Team


Mar1995 The University of Tokyo, Faculty of Law (LL.B.)
Apr 1997 The Legal Training and Research Institute of the Supreme Court of Japan (LL.M.)
May 2003 The University of California, Berkeley, School of Law (LL.M.)
Sep 2003 - Nov 2004 Associated at Finnegan, Henderson, Farabow, Garrett & Dunner




Sep 14, 2023
Apr 14, 2022
Apr 15, 2021

Professional Admissions

  • Japan (1997)
  • Japan Patent Attorneys (2005)

Professional and Academic Associations

  • Daini Tokyo Bar Association
  • The Japan Patent Attorneys Association (2000 - 2002 and 2005 - present)
  • International Trademark Association (2004 - present)
  • Japan Trademark Association (2004 - present)
  • AIPPI JAPAN (2005 - present)
  • LES JAPAN (2005 - present)


  • Japanese (first language)
  • English