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Hiroyasu Kageshima

Work +81-3-5511-3233
Ushijima & Partners

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)


Japanese (native) and English (fluent)


Dai-ni Tokyo Bar Association (2003); Board Member, The Committee on Information Economy of Japan Productivity Center; Entertainment Lawyers Network; Intellectual Property Lawyers Network; Intellectual Property Practice Group, Multilaw; Privacy & Information Security Practice Group, Multilaw


Hitotsubashi University (LL.B., 1998)

Japan: Dispute resolution

Dispute resolution – Independent local firms

Within: Dispute resolution – Independent local firms

Ushijima & Partners' Osamu Inoue and managing partner Shin Ushijima represented the Urban Renaissance Agency as one of the eight defendants in a suit filed by the owner of Muza Kawasaki symphony hall and the Tokyo Symphony Orchestra to recover over JPY2bn damages following the destruction of the hall's ceiling during 2011's East Japan earthquake. In other highlights, employment law specialist Rikisuke Yamanaka acted for a major corporation in its stock-drop litigation against the directors of a paper manufacturer following its announcement of the issuance of a convertible bond, and Motohiro Kuroki is advising a leading multinational technology manufacturer on its dispute with a landlord arising from an alleged failure to restore a building to its original condition after termination of a lease. Hiroyasu Kageshima assisted a number of IT-service providers with actions brought by customers in connection with the cancellation of system development projects and recovery of damages incurred by the alleged failure of the project. Other key names include experienced antitrust partner Yoshimoto Kawamura, Hiroshi Watanabe and Masahiko Todo, who was part of the team acting in a family dispute over the ownership of assets in the estate of a deceased husband and father.

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Japan: TMT

TMT – Independent local firms

Within: TMT – Independent local firms

The experienced team at Ushijima & Partners handles issues across TMT and specialises in litigation relating to the development of large IT systems for financial institutions and issues pertaining to big data analysis and internet defamation. The group's domestic and foreign clients include financial institutions, IT companies, retail operators, pharmaceutical manufacturers and sporting event organisations. Practice head Hiroyasu Kageshima, advises on IT system developments, personal data, internet service issues, fintech, data leakage, and defamation work.

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Legal Developments in Japan

Legal Developments and updates from the leading lawyers in each jurisdiction. To contribute, send an email request to
  • Taking control of a Japanese publicly listed company:

    Introductory notes for successfully completing an M&A
  • Yuasa and Hara Business Law News

    Contents of the Issue Law on liability for breach of contract Review on the amendment to the cabinet office order on Corporate Disclosure

    The Minister for Justice, Alan Shatter (“the Minister”), has published the Criminal Justice Bill 2011 (“the Bill”). The main purpose of the Bill is stated to be “…to amend the criminal law to improve certain procedural matters and strengthen Garda investigative powers. The intention is that such improvements will assist in reducing the delays associated with the investigation and prosecution of complex crime, in particular white collar crime.”
  • Japan: New legislative framework for Sukuk

    The new framework passed in May 2011 will provide a solid legal platform for issuing Sukuk Ijarah under Japanese law. NAOKI ISHIKAWA highlights key legal structures and tax treatment in respect of the anticipated Sukuk issuances in Japan.
  • Yakult Bottle Acquired Distinctiveness

    Do you know about Yakult's delicious lactic acid drink which is contained in a small bottle? Yakult's lactic acid drink (hereafter referred to as "Yakult drink") is the most famous lactic acid drink in Japan and today is also being sold in many countries around the world. When you are enjoying Yakult drink, please keep in mind the case mentioned below.
  • Tax: Japan: International Joint Ventures

    Tax on international joint ventures. Country Q&A (Japan).
  • Japan: Recent Developments in Practice and Law

    The successful closing of two Islamic fi nance transactions which was announced in July 2010 by Nomura Holdings have paved a concrete path for Japanese corporations to consider overseas Islamic fi nance markets for their fund raising activities. The fi rst transaction was in Asia for the issuance of Sukuk Ijarah and the second was in the Middle East for the establishment of a Commodity Murabahah facility (Nomura Deals).
  • Renewable energy takes off in Japan

    Like many other countries, Japan has decided to reform its renewable energy (RE) policy, to dramatically increase the use of renewable energy. The core policy mechanism is a feed-in tariff (FIT). This chapter summarises the contemplated Japanese FIT and its practical impact on existing and future investment in this sector, providing an overview of:
  • Licensing - 2010

    Q & A on Licensing in Japan 
  • Law on the Civil Jurisdiction of Japanese Courts over Foreign Countries, etc.

    The Law has been enacted to clarify the scope of application of the civil jurisdiction of Japanese courts over foreign countries, etc., and set exceptions to civil preocedings involving foreign countries, etc., based on the United Nations Convention on the Jurisdictional Immunities of States and their property (UN Convention on Immunities) (see Article 1).