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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

2020.07.22 Publication

In a recurring feature series, Nobuaki Mukai authored the article, "The Key Evidence of Antitrust Violation #8: Sony Computer Entertainment Case," in the September 2020 (Vol. 20, No. 9) issue of Business Law.

2020.07.01 Information

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

2020.06.24 Publication

Shinichiro Uemura updated an article titled "Relevant laws and regulations related to Covid-19 in the Philippines (As of June 22, 2020)."

2020.06.22 Publication

In a recurring feature series, Nobuaki Mukai authored the article, "The Key Evidence of Antitrust Violation #7: Tsuchiya Kigyo Case," in the August 2020 (Vol. 20, No. 8) issue of Business Law.

2020.06.19 Publication

Hirotoshi Kakumoto have co-authored the book, "Practice Manual for Petition of Corporate Bankruptcy (2nd Edition)", issue of Seirin Shoin.

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.

2020.02.25 Information

Naoki Nihonmatsu joined the firm as associate on February 25, 2020.

2020.01.06 Information

Hirotoshi Kakumoto has been promoted to partner in the firm as from January 2020.

2019.12.02 Information

Toshiyuki Nambu has joined Momo-o, Matsuo & Namba as Advisor on December 2, 2019.

2020.01.27 Seminar

Junya Naito, Tsuyoshi Suzuki and Shinichiro Mori will be featured speakers at a seminar in Tokyo entitled “International Commercial Arbitration and Mediation: Key Issues for Resolving International Commercial Disputes” co-hosted by MMN and Sidley Austin LLP on February 13, 2020.

If you would like to attend this seminar, please fill out and send us the application form contained in the link above by email. Please note that there is limited capacity and applications will be accepted on a first-come, first-served basis. We may have to decline your application when capacity is reached.

Send via email to: mmn@mmn-law.gr.jp

2019.11.26 Seminar

Nobuaki Mukai served as Panelist in a panel discussion on intellectual property law and SEPs (standard essential patents) from the viewpoint of competition law at DLA Piper’s 2019 Corporate and Intellectual Property Symposium held in Nagoya and Tokyo. The discussion was moderated by Mr. Shuzo Maruyama (DLA Piper LLP), and Dr. Mukai’s co-panelists were Mr. Misao Shimizu (Yanagida & Partners/ Tokyo session only) and Mr. Hirohiko Usui (Usui Patent Office).

2019.10.17 Seminar

Tsuyoshi Suzuki played the role of a party’s counsel in a mock emergency-arbitrator arbitration in the 2019 ICC Arbitration Seminar 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 16.

2020.07.22 Publication

In a recurring feature series, Nobuaki Mukai authored the article, "The Key Evidence of Antitrust Violation #8: Sony Computer Entertainment Case," in the September 2020 (Vol. 20, No. 9) issue of Business Law.

2020.06.24 Publication

Shinichiro Uemura updated an article titled "Relevant laws and regulations related to Covid-19 in the Philippines (As of June 22, 2020)."

2020.06.22 Publication

In a recurring feature series, Nobuaki Mukai authored the article, "The Key Evidence of Antitrust Violation #7: Tsuchiya Kigyo Case," in the August 2020 (Vol. 20, No. 8) issue of Business Law.

2020.06.19 Publication

Hirotoshi Kakumoto have co-authored the book, "Practice Manual for Petition of Corporate Bankruptcy (2nd Edition)", issue of Seirin Shoin.

2020.05.20 Publication

In a recurring feature series, Nobuaki Mukai authored the article, "The Key Evidence of Antitrust Violation #6: Tama Area (Western Tokyo) Bid-rigging Case," in the June 2020 (Vol. 20, No. 6) issue of Business Law.

2020.05.11 Awards

Momo-o, Matsuo and Namba is ranked as a Recommended Firm in Japan and Junya Naito has once again been ranked as a Litigation Star in the practice areas of Commercial and Transactions; Dispute Resolution; and International Arbitration by "Benchmark Litigation Asia-Pacific 2020" published by Euromoney Institutional Investor.

2020.05.11 Awards

The following Momo-o, Matsuo & Namba attorneys have been selected for inclusion in the 11th 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
"Litigation" Junya Naito
"Private Equity, Private Funds and Venture Capital Law" Shuichi Namba

2020.02.14 Awards

Momo-o, Matsuo & Namba and Junya Naito have been ranked in the practice area of "Dispute Resolution: Domestic Japan" in "Chambers Global 2020" by Chambers and Partners.

2019.10.04 Awards

Momo-o, Matsuo & Namba and its attorneys have been recognized in the following practice areas by "Who's Who Legal 2019" published by Law Business Research:

"Global Leader: Asset Recovery 2019" Junya Naito
"National Leader: Japan - Arbitration 2019" Junya Naito
"National Leader: Japan - Arbitration 2019" Tsuyoshi Suzuki
"National Leader: Japan - Competition 2019" Nobuaki Mukai

2019.05.01 Awards

Momo-o, Matsuo and Namba is ranked as a Recommended Firm in Japan and Junya Naito has once again been ranked as a Dispute Resolution Star in the practice areas of Commercial and Transactions by "Benchmark Litigation Asia-Pacific 2019" published by Euromoney Institutional Investor.

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

  • chambers Asia Pacific
  • LEGAL 500
  • grobal chambers 2019
  • BENCHMARK LITIGATION Asia Pacific