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Momo-o, Matsuo & Namba was founded in April 1989 by its three name partners and their associates. With our experience in the areas of international and domestic business transactions and litigation, our goal has always been to effectively accommodate the needs of clients while providing superior and reliable legal advice.

We pride ourselves on the ability to meet the complicated demands of corporate clients in an ever-changing world economy. Our expertise spans various areas of law, including commercial transactions, corporate, M&A, bankruptcy, antitrust, intellectual property, labor & employment and general litigation/arbitration. Many lawyers in our firm have obtained advanced legal degrees abroad and worked at foreign law firms. Many are recognized experts in their fields of practice. It is this depth of experience that enables us to provide timely and hands-on counsel to domestic and international corporations on a wide range of cross-border matters.

While the trend for law firms in Japan has been to increase its attorney-count, we firmly believe that by maintaining and enhancing our clients' trust, our firm can and will keep growing organically as a mid-sized law firm practicing efficiently and effectively in many different practice areas.

News

2021.09.13 Publications

New
Junya Naito and Motomu Wake co-authored an article entitled "Utilizing Third-party Funding in Japan—Issues Regarding the Attorney Act and the Basic Rules on the Duties of Practicing Attorneys." This article appeared in the Japan Commercial Arbitration Journal (Vol. 2/2021) published by the Japan Commercial Arbitration Association (JCAA).

2021.09.06 Client Update

New
Takayuki Matsuo and Hu Yue have authored a client update on the Personal Information Protection Law of the People's Republic of China, which was enacted and promulgated on August 20, 2021.

2021.09.03 Publications

New
Tsuyoshi Suzuki has authored "Column: International Arbitration—Preparations for Overseas Business Trouble (Vol. 11) Web Hearing (1)," which appeared in NBL No. 1201(September 1, 2021), p. 72.

2021.08.26 Publications

Nobuaki Mukai published a book review of Makoto Yamamoto and Hiroaki Matsumoto’s "New Leniency Program under the Antimonopoly Act: Introduction of the Reduction System for Cooperation in Investigation." Dr. Mukai’s review appeared in the August 2021 (No. 850) issue of Fair Trade.

2021.04.14 Information

Leo Watanabe joined the firm as associate on April 14, 2021.

2021.04.01 Information

Shotaro Mitomi joined the firm as an attorney through the Ministry of Justice's Work Experience Program for Assistant Judges and Public Prosecutors.

2020.10.01 Information

Hiroshi Inoue has joined Momo-o, Matsuo & Namba as Of-Counsel on October 1, 2020.

2020.08.18 Information

We are pleased to announce the publication of our brochure (2020) to Firm Profile.

2020.07.01 Information

Shin Setoyama joined the firm as associate on July 1, 2020.

2020.04.07 Information

【Important】
Effective April 8, 2020, our office will be closed during the pendency of the declared state of emergency.

All attorneys and staff members are working from home until the situation improves.

Please contact us by email as we are unable to respond to telephone calls to our firm’s phone number. If you know the cell phone number of your attorney contact, please call him or her directly.

Communications should be made by email or cell phone.

Physical mail will continue to be received. However, please be aware that we may not be able to confirm physical mail in a timely fashion. Again, we suggest you contact us by email or cell phone.

Thank you very much for your understanding.

2021.03.29 Lecture and Seminars

Toshiyuki Nambu participated as a panelist in a webinar entitled "Hub-and-Spoke Cartel Cases" sponsored by the International Competition Network’s "ICN Cartel Working Group Asia Pacific Webinar Series" on March 24.

2021.02.08 Lecture and Seminars

MMN co-hosted a webinar entitled “How Japanese Companies Can Monetize Their US Patents: Trends and Access to Third-Party Funding” with Quinn Emanuel Urquhart & Sullivan LLP on February 4, 2021.
Junya Naito, Koichi Nakatani, Koji Ohe, Yohei Yamada and Shinichiro Mori participated as speakers at this webinar.

2021.02.05 Lecture and Seminars

Peter R. Tyksinski participated in Interlaw’s virtual 2021 Asia Pacific Regional Meeting held from February 2 through February 5 and presented the topic, "Tokyo Olympics 2021: To Hold or Not to Hold!" to the Sports, Media and Entertainment Special Business Team. MMN is the sole Japan member of Interlaw. Interlaw is an elite-ranked international law firm network comprised of independent law firms working collaboratively on a “Best Client” basis.

2021.01.05 Lecture and Seminars

Junya Naito, Tsuyoshi Suzuki, Shinichiro Mori and Motomu Wake serve as lecturers on the topic of “Documentary Evidence in International Arbitration” for “International Arbitration (Advanced),” an e-learning series by JIDRC (Japan International Dispute Resolution Center).

Please see the link here:
1. Documentary Evidence in International Arbitration – Outline Ⅰ
2. Documentary Evidence in International Arbitration – Outline Ⅱ
3. Overview of Procedure for Document Production
4. Practice of Procedure for Document Production Ⅰ
5. Practice of Procedure for Document Production Ⅱ

2020.10.30 Lecture and Seminars

Tsuyoshi Suzuki participated as a panelist in "The Second Webinar: Conducting Virtual Hearing in ICC Arbitration and Pitfalls in Virtual Hearing" in 2020 Arbitration Webinar Series in Japan organized by the International Chamber of Commerce (ICC) Japan and co-organized by the International Chamber of Commerce (ICC Paris), and the Japan International Dispute Resolution Center (JIDRC) on October 29.

2020.10.22 Lecture and Seminars

Peter R. Tyksinski participated in Interlaw’s first ever virtual Annual General Meeting held from October 19 through October 23 and presented the topic, "Tokyo Olympics 2021: Determined to Host!" to the Sports, Media and Entertainment Special Business Team. MMN is the sole Japan member of Interlaw. Interlaw is an elite-ranked international law firm network comprised of independent law firms working collaboratively on a “Best Client” basis.

2021.09.13 Publications

New
Junya Naito and Motomu Wake co-authored an article entitled "Utilizing Third-party Funding in Japan—Issues Regarding the Attorney Act and the Basic Rules on the Duties of Practicing Attorneys." This article appeared in the Japan Commercial Arbitration Journal (Vol. 2/2021) published by the Japan Commercial Arbitration Association (JCAA).

2021.09.03 Publications

New
Tsuyoshi Suzuki has authored "Column: International Arbitration—Preparations for Overseas Business Trouble (Vol. 11) Web Hearing (1)," which appeared in NBL No. 1201(September 1, 2021), p. 72.

2021.08.26 Publications

Nobuaki Mukai published a book review of Makoto Yamamoto and Hiroaki Matsumoto’s "New Leniency Program under the Antimonopoly Act: Introduction of the Reduction System for Cooperation in Investigation." Dr. Mukai’s review appeared in the August 2021 (No. 850) issue of Fair Trade.

2021.05.11 Awards

Momo-o, Matsuo and Namba is ranked in the practice areas of Commercial and Transactions; International Arbitration; and White-Collar Crime by "Benchmark Litigation Asia-Pacific 2021" published by Euromoney Institutional Investor. Benchmark has once again ranked Junya Naito as a Litigation Star and recognized him in the practice areas of Commercial and Transactions; and International Arbitration.

2021.04.16 Awards

The following Momo-o, Matsuo & Namba attorneys have been selected for inclusion in the 12th Edition of The Best Lawyers in Japan, the highly regarded peer-review legal publication by Best Lawyers:

"Antitrust/Competition Law" Nobuaki Mukai
"Arbitration and Mediation" Junya Naito
"Corporate and Mergers and Acquisitions Law" Makoto Matsuo, Shuichi Namba and Junya Naito
"Insolvency and Reorganization Law" Shigeaki Momo-o and Junya Naito
"Litigation" Junya Naito
"Private Equity, Private Funds and Venture Capital Law" Shuichi Namba

2021.02.22 Awards

Momo-o, Matsuo & Namba has been ranked in Band 2 and Junya Naito in Band 1 in the practice area of "Dispute Resolution: Domestic Japan" in "Chambers Global 2021" by Chambers and Partners.

Professionals

INTERLAW ロゴ
INTERLAW メンバー

Interlaw

Momo-o, Matsuo & Namba works integrally with our clients throughout the world as the only Japan member of Interlaw, the elite-ranked international network of full-service independent law firms.

Interlaw is an elite international network of more than 80 pre-vetted, annually reviewed, full-service independent law firms in more than 150 cities worldwide comprising over 7,000 lawyers. Interlawyers are fluent in the rules, laws, customs and language of their own jurisdiction as well as in English, and many hold advanced legal degrees from internationally regarded universities and law schools. There is never a fee for referral between Interlaw member firms and every Interlaw member will extend “Best Client” status to clients referred from fellow Interlawyers. Criteria for membership include impeccable ethical standards, reputation for excellence, client responsiveness, expertise in legal representation, transparency in billing, technological capabilities and shared core values. Prospective clients are encouraged to review the expertise of the member firms at www.Interlaw.com.

Practice Areas

The legal issues facing our global and local clients are diverse and represent an ever-changing and increasingly integrated world economy. This reality is reflected in our attorneys who are internationally-recognized experts in practice areas such as litigation and arbitration, corporate law and compliance, M&A, antitrust and competition, bankruptcy and reorganization, intellectual property and labor and employment.

外観

Access

Kojimachi Diamond Building
4-1 Kojimachi, Chiyoda-ku
Tokyo 102-0083 Japan

Awards

  • grobal chambers 2021
  • chambers Asia Pacific
  • top ranked grobal chambers 2021
  • LEGAL 500
  • BENCHMARK LITIGATION Asia Pacific