History
| March 2002 | Graduated from Hitotsubashi University, Faculty of Law (LL.B.) |
| April 2002 - October 2003 | The Legal Training and Research Institute of the Supreme Court of Japan |
| October 2003 | Admitted to Japanese Bar (The Dai-ichi Tokyo Bar Association) |
| October 2003 | Momo-o, Matsuo & Namba |
| May 2008 | Master of Laws (LL.M.) at Boston University, School of Law |
| September 2008 - July 2009 | Quinn Emanuel Urquhart & Sullivan, LLP (Los Angeles) |
| February 2009 | Admitted to New York Bar |
| January 2012 | Became Partner of Momo-o, Matsuo & Namba |
Activities and others
Member, Japan Association of Arbitrators
President, Young Japan Association of Arbitrators (YJAA) (2015-2019)
Recognized as “Future Leaders – Partners” by “Who's Who Legal: Arbitration” (2017-2019, 2022)
Recognized by “Who's Who Legal: Japan (Arbitration)” (2021)
Recognized as “National Leaders” by “Who's Who Legal: Arbitration” (2020, 2022)
Candidate, Arbitrator, the Japan Commercial Arbitration Association (JCAA) (2019-Present)
Candidate, Sports Arbitrator and Mediator, Japan Sports Arbitration Agency (2017-Present)
Judge, Intercollegiate Negotiation Competition (2015-2024)
Chambers Global, “Dispute Resolution: Domestic - Japan” (2023) [currently, Band 4]
Chambers Asia Pacific, “Dispute Resolution: Domestic - Japan” (2023-2025) [currently, Band 4]
Publications
《English Translation of Title Only. Language of Publication is Japanese》
- (Series) The Essence of Dispute Resolution Practice—A Practical Guide for Legal Departments
NBL Vol. 1285 (March 1, 2025) - - Column: International Arbitration—Preparations for Overseas Business Trouble (Vol. 11) Web Hearing (1)
NBL No. 1201 (September 1, 2021), p. 72. - Arbitrator's Non-Disclosure of Conflict of Interest and Setting Aside of the Arbitration Award – Decision of the Osaka High Court dated June 28, 2016
Co-author, NBL No. 1097 (2017.5.1), p. 39. - Special Topic: International Arbitration Information; Present Situation and Prospect of Arbitration in Japan
Co-author, The Lawyers (May 2015) - Textbook of International Arbitration
Co-author, Shinzan-sha (2015) - Encyclopedia of Practical Forms of Contract
Co-author, GYOSEI Corporation (1st Edition 2008, 2nd Edition 2014) - Court Assistance for Examination of Witnesses in Arbitration Proceedings
Co-author, JCA Journal, Vol.2006/12 (2006) - Information Management Practice for Corporations
Co-author, Shinnihon-Hoki Publishing (2005)
《English Publication》
- Lexology’s In-Depth: International Arbitration (formerly The International Arbitration Review) (15th Edition)
Co-author, Japan chapter, Law Business Research Ltd. (2024) - Enforcement of Judgments in Civil and Commercial Matters: Japan (The Legal 500 Country Comparative Guides)
Co-author, Legalease Ltd. (2023) - Mondaq International Arbitration Comparative Guide: Japan
Co-author, Mondaq Ltd. (2023) - The International Arbitration Review, 14th Edition: Japan (The Law Reviews series)
Co-author, Law Business Research Ltd. (2023) - Enforcement of Judgements 2021-2023 (Japan Chapter)
Co-author, Chambers and Partners (2021-2023) - Lexology Getting the Deal Through: Mediation 2020-2022 (Japan Chapter)
Co-author, Law Business Research Ltd. (2020-2022) - Lexology Getting the Deal Through—Practice Guide: Japan M&A (1st-3rd Edition) (Dispute Resolution in Japan chapter)
Co-author, Law Business Research Ltd. (2021-2023) - The Dispute Resolution Review, Eleventh-Thirteenth Edition
Co-author, Law Business Research Ltd. (2019-2021) - International Arbitration 2019-2020 (Japan Chapter)
Co-author, Chambers and Partners (2019-2020) - Getting the Deal Through - Legal Privilege & Professional Secrecy 2016-2021
Co-author, Law Business Research Ltd. (2016-2021) - GLI - Litigation & Dispute Resolution, Fourth-Fifth Edition
Co-author, Global Legal Group Ltd.（2015-2016） - The International Arbitration Review, Fourth Edition
Co-author, Law Business Research Ltd.（2013） - GLI - Litigation & Dispute Resolution, First Edition
Co-author, Global Legal Group Ltd. (2012)
News
The following Momo-o, Matsuo & Namba attorneys have been selected for inclusion in the 2026 Edition of The Best Lawyers in Japan, the highly regarded peer-review legal publication by Best Lawyers:
"Antitrust/Competition Law" Nobuaki Mukai and Takashi Kobayashi
"Arbitration and Mediation" Junya Naito
"Corporate and Mergers and Acquisitions Law" Makoto Matsuo, Shuichi Namba and Junya Naito
"Corporate Governance and Compliance Practice" Rin Moriguchi and Yohei Yamada
"Information Technology Law" Takayuki Matsuo
"Insolvency and Reorganization Law" Shigeaki Momo-o and Junya Naito
"International Arbitration" Junya Naito and Tsuyoshi Suzuki
"Litigation" Junya Naito and Motomu Wake
"Private Equity, Private Funds and Venture Capital Law" Shuichi Namba
"Tax Law" Motomu Wake
Tsuyoshi Suzuki, Naoki Takaishi, Ryota Asakura and Sho Tanaka have authored “The Essence of Dispute Resolution Practice—A Practical Guide for Legal Departments (Vol. 1) Initial Response (1),” which appeared in NBL No. 1285 (March 1, 2025), p. 4.
Momo-o, Matsuo & Namba has been ranked in Band 2, Junya Naito in Band 1, and Tsuyoshi Suzuki in Band 4, in the practice area of "Dispute Resolution: Domestic Japan" in "Chambers Global 2025" by Chambers and Partners.
Momo-o, Matsuo & Namba and the following attorneys have been ranked in "Chambers Asia-Pacific 2025" by Chambers & Partners:
Firm Rankings:
Competition/Antitrust
• Band 4
Dispute Resolution: Domestic
• Band 2
Individual Attorney Rankings:
Competition/Antitrust
• Nobuaki Mukai: Band 2
Dispute Resolution: Domestic
• Junya Naito: Band 1
• Tsuyoshi Suzuki: Band 4
On November 16 and 17, Tsuyoshi Suzuki, Takayuki Matsuo and Yui Takahashi served as judges at the Intercollegiate Negotiation Competition, an international intercollegiate competition featuring mock international negotiations and arbitrations.