Yasufumi Shiroyama > Anderson Mori & Tomotsune > Tokyo, Japan > Lawyer Profile

Anderson Mori & Tomotsune
Otemachi Park Building
1-1-1 Otemachi, Chiyoda-ku

Work Department

Intellectual Property


Partner(Intellectual Property/Life Sciences/TMT, Competition/Antitrust, Dispute Resolution)


Admitted in Japan (1994)


  • Japanese (first language)
  • English


Dai-ichi Tokyo Bar Association (Japan), 1994, Patent Attorneys Association, AIPPI Japan, LES Japan, INTA


The University of Tokyo (LLB, 1992); University of California, Davis (LLM, 1998)

Lawyer Rankings

Japan > Intellectual property: Independent local firms

(Hall of Fame)

Yasufumi ShiroyamaAnderson Mori & Tomotsune

Headquartered in Tokyo, Anderson Mori & Tomotsune boasts a full-service IP practice, comprising practitioners with a deep knowledge of IP licensing and transactions. Alongside strong industry experience in electronics and telecommunications, the team is also noted for its expertise in trade mark, entertainment disputes and copyright. Industry veteran Yasufumi Shiroyama co-leads the practice alongside a prodigious team of IP experts which include Yoshikazu Iwase, well known for his litigation experience in patent infringement trials and revocation suits, and Akihito Nakamachi, a bilingual and bicultural attorney who has served as partner in both the United States and Japan. Wataru Shimizu focuses on technology transfer agreements, compliance and IP management, whereas Miki Goto leverages his academic background in science and engineering to advise on complex litigation, patent disputes and data privacy issues. Other co-leads include Masayuki Yamanouchi, who specializes in patent infringement issues in the pharmaceutical sector and Nobuto Shirane, who handles IT system development disputes and software licensing.