Kakuji Mitani

Mr. Mitani has extensive experience in corporate legal affairs, both domestically and internationally, with a particular focus on company law. He is dedicated to helping businesses resolve issues and make critical decisions at the forefront of their operations, including areas such as corporate governance, M&A transactions, board of directors’ operations, and compliance and other material matters.

Mr. Mitani also possesses a wealth of experience in handling shareholder derivative lawsuits, corporate litigation, and disputes related to large-scale contracts. His expertise extends to cross-border M&A transactions and international cartel cases in the field of antitrust and competition law. In recent years, He has been committed to supporting the growth of startup companies by providing strategic and practical advice tailored to each stage of their development.

Kakuji Mitani

Admissions

2002
Admitted to the bar (Dai-ichi Tokyo Bar Association)
弁護士登録(第一東京弁護士会)
2008
New York State Bar Association
ニューヨーク州弁護士登録

Expertise

Company Law & Corporate Governance
会社法・コーポレートガバナンス
Shareholders' and Board of Directors' Meetings Advice
株主総会・取締役会アドバイス
Corporate Litigation, Inter-company Litigation, Mediation & Arbitration
会社訴訟・企業間訴訟・調停・仲裁
M&A/Legal Due Diligence
M&A・法務DD
Compliance Matters & Crisis Management
コンプライアンス事案・危機管理
Competition Law, Antitrust Law & Regulatory Compliance
競争法・独占禁止法・各種業法規制対応

Education

2000
The University of Tokyo (LL.B.)
東京大学法学部卒業
2007
Columbia Law School (LL.M.)
米国 Columbia Law School (LL.M.)

Career

2007
-
2008
Weil,Gotshal & Manges (NY)
Weil,Gotshal & Manges (NY) 勤務
2011
-
2021
Partner at Momo-o, Matsuo & Namba
桃尾・松尾・難波法律事務所パートナー
2021
Established Sparkle Legal
スパークル法律事務所 設立

Awards

Thomson Reuters Stand-out Lawyers 2026
Thomson Reuters Stand-out Lawyers 2025

Activities

Member of the Council, Dai-ichi Tokyo Bar Association (2023)
第一東京弁護士会常議員(2023年)
Chairperson of the Corporate Law Research Committee at the General Legal Research Institute, Dai-ichi Tokyo Bar Association
第一東京弁護士会総合法律研究所会社法研究部会・部会長
Member of the Examination Committee for the Small and Medium Enterprise Management Consultant Examination (2025)
中小企業診断士試験出題委員(2025年)
Member of Japan Competition Law Forum
競争法フォーラム会員
Outside Auditor, CoreStaff Co., Ltd. (2023-)
コアスタッフ株式会社 社外監査役(2023年~)
Supervisory Director, GLP J-REIT (2026-)
GLP投資法人 監督役員(2026年~)