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Atsumi & Sakai

Work +81 3 5501 2111
Fax +81 3 5501 2211
London, Tokyo

Bonnie Dixon

Work +81-(0)3-5501-1166
Atsumi & Sakai

Work Department

Finance Practice Group/ Finance, Litigation Insolvency Practice Group, Fund Practice Group, International Practice Group.


Partner (International Transactions, Cross Border Labor and Employment, Cross Border Litigation, Structured Finance, Banking Transactions, Investment Funds, etc.).


Partner, Dorsey & Whitney LLP (Tokyo), Partner, Morgan, Lewis & Bockius LLP (New York / Tokyo), Partner, Schulte Roth & Zabel LLP (New York), *****[Award]: The Best Lawyers in Japan 2017 in Asset Finance Law, Asialaw Profiles 2016 Leading Lawyers in Dispute Resolution/Litigation, Women In Law Awards 2016 Cross Border Lawyer of the Year, Banking and Finance Law and Structured Finance Law, Chambers Global 2016 Leading Individual in Capital Markets (Foreign expert), Legal 500 2016 Leading Individual in Structured Finance/Securitisation, The Best Lawyers in Japan 2016 in Asset Finance Law, Banking and Finance Law and Structured Finance Law, Who's Who Legal Japan 2015 “Bonnie L. Dixon at Atsumi & Sakai is “internationally recognized” for her high-quality work and “wealth of experience”.  Clients particularly value her “astute commercial acumen” and “versatile approach”.", Expert Guides 2015 in Structured Finance and Securitisation, Legal 500 2015 Leading Individual in Structured Finance / Securitisation, Asialaw Profiles 2015 Leading Lawyers in Dispute Resolution, Expert Guides Banking, Financial and Transactional Law 2014 in Structured Finance and Securitisation, The Best Lawyers in Japan 2014-2015 in Asset Finance Law, Banking and Finance Law and Structured Finance Law, Who's Who Legal Japan 2014 in Transport, Legal 500 2014 Leading Individual in Structured Finance / Securitisation, Asialaw Profiles 2014 Leading Lawyers in Banking, Expert Guides Banking, Financial and Transactional Law 2013 in Structured Finance and Securitisation- Japan, Best Lawyers 2013 "Lawyer of the Year" in Structured Finance, Best Lawyers 2013 "Best Lawyers" in Asset Finance and Banking and Finance Law, Asialaw Profiles 2013 Leading Lawyers, Asialaw Profiles 2013 Recommended Lawyers, Asialaw Profiles 2012 Leading Lawyers in Structured Finance, Best Lawyers 2012 "Best Lawyers" in Asset Finance, Banking and Finance Law and Structured Finance, Asia Law Leading Lawyers — Japan, 2010 in Structured Finance, Best Lawyers 2010 "Best Lawyers" in Asset Finance, Banking and Finance Law and Structured Finance, ASIAN-COUNSEL External Counsel of the Year Japan 2009, Legal Media Guides to the World’s Leading Lawyers in Aviation, Legal 500 2010 Leading Individual in Securitisation, IFLR1000 2010 Leading Lawyer in Capital Markets — Structured Finance and Securitization, Asia Law Leading Lawyers — Japan, 2009 in M&A, Best Lawyers 2009 "Best Lawyers" in Structured Finance, Legal 500 2009 Leading Individual in Securitisation, Legal Media Guides to the World’s Leading Lawyers 2008 in Aviation*****[Publications]: The Tail that Wags the Dog, International Financial Law Review, Oct. 2007, IFLR (Co-author), Saying Good-Bye to the YK, J-RED (Japan Real-Estate Direct) February 2006 (Co-author), The Japanese LLP: Is it a Useful Alternative to Other Japanese Vehicles? Japan Real Estate Directory (J-RED), December 2005 (Issue No. 018), p15-16, (Co-author), Legal Issues Affecting Documentation of Cross-Border Transactions, in Drafting Corporate Agreements 1999-2000, published by the Practicing Law Institute, 1999; pp 675-695, Bankruptcy in Japan: An M&A Primer for Executives, published in Success Stories Japan, by Success Stories Media, Inc., April/May 1999, Removing Troubled Real Estate Assets from the Balance Sheets of U.S. Lenders, published in Japanese by Japan Securities Research Institute, April, 1994 (Co-author), How United States Banks Dispose of Troubled Real Estate assets, published in Japanese by Kinzai Institute for Financial Affairs Inc., December 1993, How to Avoid Lender Liability, published in Japanese by Kinzai Institute for Financial affairs Inc., June 1992.


English and Japanese.


Dai-ichi Tokyo Bar Association, American Chamber of Commerce in Japan, New York State Bar Association, American Bar Association.


University of Michigan (B.A., majoring in Japanese and Political Science, 1978), University of Michigan Law School (J.D., 1981).


Translation of classical Japanese drama (Kabuki and Bunraku), camping, hiking and travel.

Japan: Banking and finance

Banking and finance – Independent local firms

Within: Banking and finance – Independent local firms

Atsumi & Sakai has been advising startups, IT vendors and financial institutions on the increasing presence of new technologies in the banking and insurance sector, while also maintaining a strong traditional financing, lending and asset finance practice. The team continued to expand its ranks with the addition of Akimoto Kawamura from Citigroup and Michiro Suenaga from Sidley Austin Nishikawa Foreign Law Joint Enterprise, as well as the promotion to partner of Kenichi Tanizaki. The Fintech Association of Japan recently appointed the group to assist with the drafting of an agreement on the use of a bank API with a software vendor, and Takafumi Ochiai teamed up with Yuri Suzuki to provide ongoing counsel the Japan Blockchain Association with regards to virtual currency exchange regulations. In further highlights, Bonnie Dixon oversaw a high-value senior secured asset-based revolving credit facility in connection with a corporate acquisition, and Ochiai represented a bank in the creation of distributed securities using block chain and ICOs.

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Japan: Corporate and M&A

Corporate and M&A – Independent local firms

Within: Corporate and M&A – Independent local firms

Atsumi & Sakai has welcomed Go Fujimoto, Go Hashimoto and Hisashi Miyatsuka from 'Big Four' firm Nishimura & Asahi, as well as Akimoto Kawamura from Citigroup, further strengthening the practice. Global Infrastructure Partners engaged a team led by Hiroyuki Sanbe as Japanese counsel on its acquisition of a 100% equity interest in the wind and solar portfolios of Equis Funds. Meanwhile, dispute resolution partner Bonnie Dixon handled Advanced Energy Industries' takeover of Japanese manufacturer Trek Holdings. Also notable is Ashish Jejurkar's work for PayMate and its promoter pertaining to the regulatory aspects of the investment by Mayfair101. Miho Niunoya assisted a Japanese power company with its purchase of shares in a foreign project company established to develop a geothermal power plant in South East Asia. Further key contacts include senior partner Shintaro Hamasu and Masayuki Matsuura .

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Japan: Dispute resolution

Dispute resolution – Independent local firms

Within: Leading individuals

Bonnie Dixon (Gaiben) - Atsumi & Sakai

Within: Dispute resolution – Independent local firms

Atsumi & Sakai covers a wide range of dispute resolution matters, including overseas class-action lawsuits, securities litigation, international arbitration and mediation, and criminal defence. Teruhisa Toyama is currently representing major institutional investors as plaintiffs in a suit seeking compensation for damages arising from misstatements in Toshiba's annual reports, and Kunihiro Sumida teamed up with senior partner Guohui Fan to advise a Chinese trading company on its JCAA claim against a Japanese automobile company; the matter related to the non-renewal of a dealer agreement. Meanwhile, in the Supreme Court, Kumpei Ohashi defended a woman before prosecuted for the death of her daughter. Bonnie Dixon is also highlighted for novel claims. The team recently strengthened its lineup through the addition of Go Hashimoto and Hisashi Miyatsuka from Nishimura & Asahi and Kenichiro Saito from a public prosecution practice; Tatsuya Fukui departed the firm.

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Legal Developments in Japan

Legal Developments and updates from the leading lawyers in each jurisdiction. To contribute, send an email request to
  • Taking control of a Japanese publicly listed company:

    Introductory notes for successfully completing an M&A
  • Yuasa and Hara Business Law News

    Contents of the Issue Law on liability for breach of contract Review on the amendment to the cabinet office order on Corporate Disclosure

    The Minister for Justice, Alan Shatter (“the Minister”), has published the Criminal Justice Bill 2011 (“the Bill”). The main purpose of the Bill is stated to be “…to amend the criminal law to improve certain procedural matters and strengthen Garda investigative powers. The intention is that such improvements will assist in reducing the delays associated with the investigation and prosecution of complex crime, in particular white collar crime.”
  • Japan: New legislative framework for Sukuk

    The new framework passed in May 2011 will provide a solid legal platform for issuing Sukuk Ijarah under Japanese law. NAOKI ISHIKAWA highlights key legal structures and tax treatment in respect of the anticipated Sukuk issuances in Japan.
  • Yakult Bottle Acquired Distinctiveness

    Do you know about Yakult's delicious lactic acid drink which is contained in a small bottle? Yakult's lactic acid drink (hereafter referred to as "Yakult drink") is the most famous lactic acid drink in Japan and today is also being sold in many countries around the world. When you are enjoying Yakult drink, please keep in mind the case mentioned below.
  • Tax: Japan: International Joint Ventures

    Tax on international joint ventures. Country Q&A (Japan).
  • Japan: Recent Developments in Practice and Law

    The successful closing of two Islamic fi nance transactions which was announced in July 2010 by Nomura Holdings have paved a concrete path for Japanese corporations to consider overseas Islamic fi nance markets for their fund raising activities. The fi rst transaction was in Asia for the issuance of Sukuk Ijarah and the second was in the Middle East for the establishment of a Commodity Murabahah facility (Nomura Deals).
  • Renewable energy takes off in Japan

    Like many other countries, Japan has decided to reform its renewable energy (RE) policy, to dramatically increase the use of renewable energy. The core policy mechanism is a feed-in tariff (FIT). This chapter summarises the contemplated Japanese FIT and its practical impact on existing and future investment in this sector, providing an overview of:
  • Licensing - 2010

    Q & A on Licensing in Japan 
  • Law on the Civil Jurisdiction of Japanese Courts over Foreign Countries, etc.

    The Law has been enacted to clarify the scope of application of the civil jurisdiction of Japanese courts over foreign countries, etc., and set exceptions to civil preocedings involving foreign countries, etc., based on the United Nations Convention on the Jurisdictional Immunities of States and their property (UN Convention on Immunities) (see Article 1).