About

Mayer Brown has longstanding relationships with top-tier Japanese trading houses, financial institutions and multinational companies. We have decades of experience advising clients worldwide on Japan-related matters. Our lawyers regularly act as international counsel on cross-border transactions involving Japanese entities, often in collaboration with Japanese law firms. They acquire an in-depth understanding of our client’s specific business challenges and assist them in identifying strategic priorities.

Our Tokyo team leverages the firm's international reach to help Japanese clients raise capital, invest and undertake business ventures overseas and has handled some of their most significant transactions around the globe. We also have a wealth of experience advising Japanese clients on disputes and regulatory matters, inside and outside the country.

Lawyers based in our Tokyo office are fluent in both English and Japanese and are qualified in a number of jurisdictions including the United States and England & Wales.

Our team of lawyers has particular experience in:

  • Project development and financing across the entire spectrum of the energy industry, including oil & gas, LNG, hydrogen, thermal power and renewables
  • Corporate mergers and acquisitions and joint ventures
  • Finance, including project financings 
  • Dispute resolution, including litigation, arbitration, and other forms of alternative dispute resolution
  • Equity and debt capital markets, US listings and SEC reporting / corporate governance
  • Intellectual property, including patents, and TMT

We often work with clients who operate across industries—particularly the energy, chemicals trading, technology, and transportation sectors. We also regularly represent export credit agencies, multilateral development banks, commercial banks, private equity firms, securities firms, and other financial institutions. View more information on our Japan practice.

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Notice

Impersonation of Masahisa Ikeda, Managing Partner of Mayer Brown Tokyo

We have been made aware that one or more unidentified individuals have been using, without authorisation, the name, title and photograph of Masahisa Ikeda, Managing Partner of our Tokyo office. They have used these details to contact members of the public, including through Gmail and other free email accounts. These communications have claimed to relate to international funds transfers and have asked for payment of fees, charges or other purported expenses.

Neither Mayer Brown nor Mr Ikeda has any connection whatsoever with these communications or with the individuals behind them. Mayer Brown does not ask for payments for purported transfer, release, processing or similar expenses through unsolicited emails or messaging applications. Our lawyers do not use personal or free web-based email accounts (such as Gmail) for client matters.

If you receive an unsolicited communication that claims to come from Mr Ikeda or any other Mayer Brown lawyer, please:

  • do not make any payment or transfer any funds;
  • do not provide any personal, financial or other information;
  • do not open any attachments or click on any links in the communication; and
  • check that the communication is genuine by contacting our Tokyo office independently, using only the contact details on our official website at www.mayerbrown.com.

If you think you may have been the victim of fraud, please contact your local police straight away.

Fictitious websites, social media pages and messaging accounts

We (Mayer Brown | 美博律师行) have been made aware of some fictitious websites (including https://kjcq8.com/ and https://wkd51.com/) and social media platforms, including Facebook (“Suspicious Pages”). These use the English name (or part of it) and the trademark of our Firm and claim to offer free consultation and legal services in relation to fraudulent acts. The Suspicious Pages have mentioned the addresses of our Hong Kong and Singapore offices. Fictitious business cards bearing our Firm’s English name and “美亚博律师事务所”, with our Hong Kong office address, have also been given to people who appear to be victims of fraud. We have also been told that individuals are pretending to be various lawyers of our Firm and contacting victims via WhatsApp, claiming to provide services in relation to internet fraud cases. Their WhatsApp profiles show a picture of our lawyers, our Firm’s name (美博 and/or Mayer Brown) and our office address.

Our Firm’s official website is www.mayerbrown.com. Our official Facebook page shows our name, Mayer Brown, in full with our official logo and can be accessed at www.facebook.com/mayerbrown. We have no connection whatsoever with the Suspicious Pages, the fictitious business cards, or anyone pretending to be one of our lawyers, including anyone using the name or identity of Masahisa Ikeda. If you are in any doubt, or would like to speak to one of our lawyers, please use the contact details on our official website.

We are extremely concerned about the impersonation and possible scams being carried out through the Suspicious Pages and by individuals pretending to be lawyers of our Firm. We have reported these matters to the police and other appropriate bodies, as applicable, and are taking appropriate action.

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