Mr Hiroyasu Kageshima > Ushijima & Partners > Tokyo, Japan > Lawyer Profile

Ushijima & Partners
TOKYO 100-6114

Work Department

Information Management / Cyber Security; Personal Information / Utilization of Personal Data; Intellectual Property; Internet / Media; System Development; Litigation Arbitration; General Corporate; Government Contracts; Compliance; M&A; Crisis Management / Handling of Misdoings; Startup Business Support




Admitted in Japan (2003); Ushijima & Partners (2003-); Partner, Ushijima & Partners (2013); Board Member, The Committee on Information Economy of Japan Productivity Center (2015-2017); Member, the My Number Special Review Committee, The Committee On Information Economy of the Japan Productivity Center (2015.7-2015.12); Member, The PrivacyMark Assessor Assessment Committee, Japan Information Processing Development Center (JIPDEC) (2017-); Advisor, Japan DPO Association (2019-)


Japanese (native) and English (fluent)


Dai-ni Tokyo Bar Association (2003); Entertainment Lawyers Network; Intellectual Property Lawyers Network; Intellectual Property Practice Group, Multilaw; Privacy & Information Security Practice Group, Multilaw


Hitotsubashi University (LL.B., 1998)

Lawyer Rankings

Japan > Dispute resolution: Independent local firms

The dispute resolution practice group at Ushijima & Partners is jointly led by Shin Ushijima and Osamu Inoue, the latter of whom is recommended for his experience in real estate and construction disputes. The team is also able to assist clients in securities litigation, international arbitrations, derivative suits, disputes surrounding software development, and hostile takeover cases. Hiroshi Watanabe regularly handles corporate control cases, while Rikisuke Yamanaka is proficient in labour disputes and cross-border transactions. Alongside disputes in system and software development, Hiroyasu Kageshima is experienced in copyright law and privacy matters.

Japan > TMT: Independent local firms

(Leading individuals: Bengoshi)

Hiroyasu KageshimaUshijima & Partners

Ushijima & Partners have experience in providing support to businesses on new information & communication technology; the firm also regularly advises on cybersecurity and data protection matters from various jurisdictions, including U.S., China, and the EU. The TMT team is headed by partner Hiroyasu Kageshima, who handles a variety of matters, including data leakage, internet service, personal data, and IT system development. Partner Kohei Tsuji is an expert in data privacy and has experience with complex cross-border personal information transfers in over numerous jurisdictions.