Masaki Sakiyama

Hiroyuki Tanaka is a Partner of Mori Hamada & Matsumoto, practicing data, IP, IT, and AI law. He is the Adjunct project professor at Keio University Graduate School of Law and Member of the Cyber-Physical Sustainability Center of Keio University Global Research Institute He has extensive experience advising foreign clients on Japanese data protection law. He is also familiar with global data protection regulations, including GDPR and CCPA / CPRA and helps Japanese clients with global data...

Kazuhiro Tanaka is a top attorney recognized by Best Lawyers in the practice area(s) of Arbitration and Mediation and Litigation. Kazuhiro, who practices law in Tokyo, Japan, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kazuhiro is held by other top lawyers in the same geographic and legal practice area.

Akihisa Yamada is a top attorney recognized by Best Lawyers in the practice area(s) of Antitrust / Competition Law and Insolvency and Reorganization Law. Akihisa, who practices law in Tokyo, Japan, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Akihisa is held by other top lawyers in the same geographic and legal practice area.

Keita Imaizumi is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law, Corporate Governance and Compliance Practice and Investment and Investment Funds. Keita, who practices law in Tokyo, Japan, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Keita is held by other top lawyers in the same geographic and legal practice area.

Yuji Ogiwara is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation. Yuji, who practices law in Tokyo, Japan, has been recognized since 2014. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Yuji is held by other top lawyers in the same geographic and legal practice area.

Fumiko Soejima is a top attorney recognized by Best Lawyers in the practice area(s) of Structured Finance Law. Fumiko, who practices law in Tokyo, Japan, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Fumiko is held by other top lawyers in the same geographic and legal practice area.

Kenneth A. Siegel is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Mergers and Acquisitions Law and Private Equity, Private Funds and Venture Capital Law. Kenneth A., who practices law in Tokyo, Japan, has been recognized since 2009. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kenneth A. is held by other top lawyers in the same geographic and legal practice area.

Kentaro Mano is a top attorney recognized by Best Lawyers in the practice area(s) of Antitrust / Competition Law. Kentaro, who practices law in Tokyo, Japan, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kentaro is held by other top lawyers in the same geographic and legal practice area.

Michiaki Hosoi is a top attorney recognized by Best Lawyers in the practice area(s) of Structured Finance Law. Michiaki, who practices law in Tokyo, Japan, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michiaki is held by other top lawyers in the same geographic and legal practice area.

Ryosuke Oue is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Ryosuke, who practices law in Tokyo, Japan, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ryosuke is held by other top lawyers in the same geographic and legal practice area.