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Atsumi & Sakai

Atsumi & Sakai  

Legal Services | England
tel: +44-(0)203-696-6540 | fax: +44-(0)75-4899-7865
4th Floor, 50 Mark Lane | London | England

Main Contacts


London, England | Frankfurt, Germany | Tokyo, Japan

Atsumi & Sakai News

Atsumi & Sakai's Overview

Atsumi & Sakai is a multi-award-winning, independent Tokyo law firm, and has been referred to as one of Japan’s “Big five” law firms. It was the first Japanese law firm to create a foreign law joint venture, which enables it to admit foreign partners and so offer its clients the quality of service that the modern international business community demands. Expanding from its highly regarded finance practice, the firm now acts for a wide range of international and domestic companies, banks, financial institutions and other businesses, offering a comprehensive range of legal expertise.

In addition to lawyers admitted in Japan (including a Japanese lawyer also admitted in England and Wales), the firm includes foreign lawyers registered in Japan to advise on the laws of the US States of New York and California, the People’s Republic of China, India, the State of Queensland, Australia, US and Australian Federal laws, and the laws of the Federal Republic of Germany (in collaboration with Janssen Foreign Law Office). Lawyers at Atsumi & Sakai not only have significant experience in conducting business in Japanese and English, but also in German, Chinese, Korean, Hindi, Marathi, Russian and Vietnamese.

  • Lawyers Worldwide: 157


Areas of Practice
  • Agriculture/Forestry/Fisheries
  • Asset Finance/Structured Finance
  • Banking & Finance
  • Business Rehabilitation/Bankruptcy
  • Capital Markets
  • Competition/Antitrust
  • Corporate
  • Cross Border Labor and Employment
  • Dispute Resolution
  • Employment/Labor
  • Fintech
  • Funds
  • Infrastructure/Energy/Natural Resources
  • Innovation
  • Insurance
  • Intellectual Property
  • International Arbitration
  • International Trade
  • International Transactions
  • Investment Funds
  • IT/Security
  • Life Sciences/Healthcare
  • Media/Telecommunications
  • Mergers & Acquisitions
  • PPP/PFI/Public Procurement
  • Project Finance
  • Real Estate/Construction
  • Regional Revitalization
  • Risk Management/Scandals
  • Sports
  • Tax/Public and Administrative Law
  • White Collar Crime/Criminal Cases


Naoki Kanehisa

Naoki KanehisaPartner, Head of London Office

Naoki Kanehisa

Naoki KanehisaPartner, Head of London Office


Eriko Kusama

Eriko KusamaAssociate


The Top Three Data Protection Law Topics in Japan
Atsumi & Sakai, July 2020

In Japan, the Act on the Protection of Personal Information (APPI) is the primary law that regulates data protection issues. In this article, we will cover a few significant recent amendments to the APPI, including one currently under consideration, while also touching on the new guidelines issued by the Japan Fair Trade Commission (JFTC) last year, which highlight an intersection of the APPI and Japanese competition law, as well as the increasing significance of personal data in M&A transactions. 2015 amendments to the APPI The APPI was enacted in 2003 and went through its first major amendment in 2015 (the 2015 amendment)...

COVID-19: Employment Law in Japan - Some Key Questions
Atsumi & Sakai, May 2020

The sudden onset of the Covid-19 emergency has caused significant disruption across swathes of the Japanese economy and raised novel and urgent questions for employers as they seek to handle the challenges they face, whilst balancing the protection of their business and their obligations to their workers. This memorandum briefly addresses a number of key employment law issues and questions.[1] COVID-19 State of Emergency On 7th April 2020 the Japanese government declared a state of emergency[2] covering the greater Tokyo and Osaka areas, and a number of other urban areas, and which was extended nationwide on 16th April...

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Atsumi & Sakai is Announces Award Recipients at Asian Legal Business Japan Law Awards 2019
Atsumi & Sakai, July 2019

Asian Legal Business Japan Law Awards 2019 Atsumi & Sakai is pleased announce its receipt of the following awards at the recent Asian Legal Business Japan Law Awards 2019: • Hiroo Atsumi: Managing Partner of the Year • Atsumi & Sakai: Overseas Practice Law Firm of the Year

Former Japanese Financial Regulatory Chief Nobuchika Mori Joins Atsumi & Sakai as an Adviser
Atsumi & Sakai, December 2018

Atsumi & Sakai, the member firm for Japan, welcomes Mr. Nobuchika Mori, former Commissioner of the Financial Services Agency of Japan (the “JFSA”), as an adviser to the Firm. Mr. Mori joined the Ministry of Finance in 1980 after graduating from the University of Tokyo, and successively held important positions with the government of Japan, including Vice Commissioner for Policy Coordination of the Planning and Coordination Bureau, Director-General of the Inspection Bureau and Director-General of the Supervisory Bureau of the JFSA...

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