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 transactions involving Japanese entities, sometimes 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 global platform to help Japanese clients 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, England & Wales, and Australia..

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 and corporate finance
  • Dispute resolution, including litigation, arbitration, and other forms of alternative dispute resolution
  • 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. For more information of our Japan practice, please click here.

Tokyo office access map

Responding to COVID-19 (Japanese)



We (Mayer Brown | 孖士打律师行) have been made aware of a website (https://kjcq8.com/) (“Suspicious Website”) using the English name and trademark of our Firm purporting to provide free consultation and legal services in relation to fraudulent acts. The addresses of our Hong Kong and Singapore offices have been mentioned on the Suspicious Website. It has also been brought to our attention that fictitious business cards with our Firm’s English name and “美亚博律师事务所”, bearing our Hong Kong office address, have been given to individuals who are apparently victims of fraud. We would like to clarify that our Firm’s official website is www.mayerbrown.com. We have no connection whatsoever with the Suspicious Website nor the fictitious business cards purporting to relate to lawyers of our Firm. If in doubt, please refer to contact details provided by our official website should you wish to speak to one of our lawyers.

We are extremely concerned with the impersonation and possible scam being perpetrated via the Suspicious Website and individuals purporting to be lawyers of our Firm. We have reported the matter to the police and other appropriate bodies, and are taking appropriate actions in connection with this matter.