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Atsumi & Sakai

Atsumi & Sakai is a multi-award-winning, independent, full-service Tokyo law firm, and among the ten largest independent full-service law firms in Japan. 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, including:

Banking & Finance
Capital Markets/Securitisation, Structured Finance
Corporate Investigations/Anti-Corruption
Data Protection & Privacy
Dispute Resolution, Domestic & Cross-Border Litigation & Arbitration
Energy (including Oil & Gas, Renewable Energy)
Financial Services Regulation
Funds Regulation
Information Technology (AI/IoT)
Insolvency/Corporate Restructuring
Intellectual Property

International Trade
Investment Funds/Joint Ventures
Labour & Employment
Life Sciences/Medical and Pharmaceutical Business
Private Equity & Venture Capital
Projects/Project Finance
Real Estate (Acquisition, Financing,Development)
Risk Management
Securities Regulation
TMT (Technology, Media & Telecommunications)
White-Collar Crime/Criminal Defence


Atsumi & Sakai has an outward-looking approach to its international practice, and has a number of foreign partners and consultants with extensive experience from leading international law firms, so offering its clients the benefit of a combination of Japanese law expertise and real international experience. As the only independent Japanese law firm with a London office, it can also provide real-time advice on Japanese law to its clients in Europe, the Middle East and Africa, as well as providing a more convenient service to its clients in the Americas.

In addition to lawyers admitted in Japan, the firm includes Registered Foreign Lawyers qualified to advise on the laws of the US States of New York and California, England & Wales, India, the People’s Republic of China, the States of Queensland and Victoria (Australia), and US and Australian Federal law, as well as the laws of the Federal Republic of Germany (in collaboration with Janssen Foreign Law Office).

Organisation Profile

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