紹介
企業に対する日常的なリーガルアドバイスの提供に加え、紛争解決及び不正調査の分野において、多数の経験を有する。紛争解決分野では、訴訟・仲裁を含む契約紛争、労務紛争及び株主代表訴訟など、多様な紛争事案を手掛ける。不正調査分野では、多くの社内調査に関与するとともに、企業や官公庁が設置した調査委員会の委員・補助者も務めた経験を有する。
業務分野
訴訟・仲裁／不正調査／会社法／労働法／租税法
資格
第一東京弁護士会（2012年登録、2020年再登録）
ニューヨーク州（2021年登録）
経歴
| 2007年3月 | 中央大学杉並高等学校 卒業 |
| 2011年3月 | 中央大学法学部 卒業 |
| 2012年12月 | 最高裁判所司法研修所修了（65期） |
| 桃尾・松尾・難波法律事務所 入所 | |
| 2018年5月 | 米国Columbia University School of Law（LL.M.） |
| 2018年10月-2020年3月 | 法務省東京法務局訟務部部付（弁護士登録一時抹消） |
| 2020年4月 | 桃尾・松尾・難波法律事務所 復帰 |
| 2023年1月 | 桃尾・松尾・難波法律事務所 パートナー |
| 2026年1月 | 大江・山田法律事務所 開設 |
著作・論文等
《日本語版》
●Third Party Funding——弁護士法、弁護士職務基本規程との関係を中心に JCAジャーナル（2021年5月号） 共著
●仲裁人補助者（Administrative Secretary）の役割と活用上の留意点 JCAジャーナル（2023年7月号）
●下級審判決・仲裁判断への対応に関する覚書 JCAジャーナル（2024年1月号）
●仲裁の基礎と仲裁条項のドラフティング—JCAA仲裁を外国企業に受け入れてもらうための工夫— JCAジャーナル（2025年3月号）
《英語版》
●Utilizing Third-party Funding in Japan—Issues Regarding the Attorney Act and the Basic Rules on the Duties of Practicing Attorneys, Japan Commercial Arbitration Journal (Vol. 2/2021) 共著
●Potential for a New Arb-Med in Japan, Japan Commercial Arbitration Journal (Vol.4/2023)共著
受賞
2026 Edition of The Best Lawyers in Japan, Litigation and Tax
Introduction
Motomu possesses extensive experience in dispute resolution and crisis management, in addition to providing general corporate legal advice. In the field of dispute resolution, Motomu handles a diverse range of matters including contract disputes, labor disputes, and shareholder derivative lawsuits. Motomu has extensive experience in both litigation and arbitration. In the area of crisis management, Motomu has conducted numerous internal investigations and has served as a committee member or assistant on investigative committees established by corporations and government agencies.
Practice Areas
Litigation & Arbitration, Crisis management/Fraud Investigation, Corporate Law, Labor & Employment Law, Tax Law
Qualifications
Japan (Dai-Ichi Tokyo Bar Association, registered 2012; re-registered 2020)
New York (2021)
Education & Professional Experience
| 2007 | Graduated from Chuo University Suginami High School |
| 2011 | Graduated from Chuo University (LL.B.) |
| 2012 | The Legal Training and Research Institute of the Supreme Court of Japan |
| Momo-o, Matsuo & Namba | |
| 2018 | Graduated from Columbia University Law School (LL.M.) |
| 2018–2020 | Tokyo Legal Affairs Bureau, Ministry of Justice (Attorney, Deputy Director of Litigation Department) (Temporary cessation of Dai-ichi Tokyo Bar Association membership during this period) |
| 2020- | Momo-o, Matsuo & Namba |
| 2023 | Became Partner of Momo-o, Matsuo & Namba |
| 2026- | Ohe & Yamada |
Publications
Japanese Articles
●The Basics of Arbitration and Drafting Arbitration Clauses, Author, 72-3 JCA Journal 3 (2025)
●Strategies for Responding to Lower Court Judgments and Arbitral Awards, Author, 71-1 JCA Journal 25 (2024)
●The Role of Administrative Secretaries ─ Inside Tips on How to Utilize Them, 70-7 JCA Journal 10 (2023)
●Third-party Funding in Japan—Possible Application of the Attorney Act and the Basic Rules on the Duties of Practicing Attorneys, Co-author, 68-5 JCA Journal 9 (2021)
English Articles
●Potential for a New Arb-Med in Japan, Co-author, Japan Commercial Arbitration Journal (Vol.4 /2023)
●Enforcement of Judgments in Civil and Commercial Matters: Japan (The Legal 500 Country Comparative Guides), Co-author, Legalease Ltd. (2023)
●Enforcement of Judgements 2021-2023 (Japan Chapter), Co-author, Chambers and Partners (2021-2023)
●Utilizing Third-party Funding in Japan—Issues Regarding the Attorney Act and the Basic Rules on the Duties of Practicing Attorneys, Co-author, Japan Commercial Arbitration Journal (Vol.2 /2021)
●International Arbitration 2020 (Japan Chapter), Co-author, Chambers and Partners (2020)
Awards
The Best Lawyers in Japan 2026 Edition, Litigation and Tax Law