JAPAN Law and Practice Contributed by: Yoshifumi Onodera, Hiroyuki Tanaka, Naoto Shimamura and Rio Ichii, Mori Hamada & Matsumoto
Mori Hamada & Matsumoto is a full-service law firm that has served clients with distinction since its estab - lishment in December 2002. The firm has experienced lawyers with considerable expertise in the constantly evolving and increasingly complex areas of informa - tion technology, life sciences and intellectual prop - erty, providing a variety of legal services in response to the diverse legal needs of its clients. These legal services include advising on regulatory requirements,
business set-up, corporate housekeeping, contract negotiations and dispute resolution. In terms of data protection, the firm has noted expertise in leveraging user information while protecting clients’ businesses. Mori Hamada’s data protection team comprises ap - proximately 150 lawyers in our Tokyo, Osaka, Na - goya, Fukuoka, Beijing, Singapore, Manila and New York offices.
Authors
Yoshifumi Onodera is a senior partner at Mori Hamada, admitted to practise in Japan (Daini Tokyo Bar Association). Highly experienced in all data-related matters involving communication, media, competition, consumer and/or information law, he is particularly adept at delivering advice to both foreign and domestic clients on complex business structures spanning vast content- and communication-related industries, including internet-related services, social networking services, games, music, movies and telecommunications. His expertise also extends to IP-related transactions concerning licensing and dispute resolution aspects in the subsidiary fields of infringement litigation, invalidity trials, appellate litigation and arbitration, and licensing in relation to intellectual property, including patents, trade marks and copyright.
Naoto Shimamura is a counsel at Mori Hamada, licensed in Japan (Daini Tokyo Bar Association), California and New York, and a lecturer at Ochanomizu University and Japan Women’s University. He uses
his in-depth knowledge of computers and the internet to engage in technology-related cases, including those involving e-commerce, consumer protection, licensing, privacy, data protection, cybersecurity, online defamation, intellectual property and dispute resolution. Naoto is also qualified as a Certified Information Privacy Professional/Europe (CIPP/E), a Certified Information Privacy Professional/United States (CIPP/US), and a Registered Information Security Specialist, which is recognised as the highest level of security engineering qualification in Japan.
Rio Ichii is a junior associate at Mori Hamada, licensed in Japan (Daiichi Tokyo Bar Association). She has a broad portfolio and a wealth of experience across a number of practice areas, including IT, intellectual property, healthcare and trade law. She has also written many articles on these topics.
Hiroyuki Tanaka is a partner at Mori Hamada, admitted to practise in Japan (Daini Tokyo Bar Association) and New York. His practice areas are data protection, IT and IP, and he has substantial experience advising
foreign clients on Japanese data protection law. Hiroyuki is also familiar with global data protection regulations, including the GDPR and CCPA, and helps Japanese clients with global data protection compliance by working closely with local counsels. He also advises on legal issues relating to AI (especially generative AI) and the protection of cybernetic avatars. Hiroyuki is an adjunct project professor at Keio University Graduate School of Law (2023–present).
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