Firm Profile

Atsumi & Sakai

Asia-Pacific Guide 2025

Ranked departments
Ranked lawyers
Asia-Pacific

Atsumi & Sakai

Atsumi & Sakai

Contact number

+81 3 5501 2111

Share profile

Also ranked in the following guides

About

Provided by Atsumi & Sakai
Asia-Pacific
Firm Overview

Managing Partner: Mr Hiroo Atsumi

Number of partners: 119

Number of lawyers: 240+

Languages: Japanese, English, German, Vietnamese, Chinese, Korean, Russian, French, Spanish, Italian, Hindi, Marathi, Sinhala, etc.


The Firm:

Atsumi & Sakai is a multi-award-winning, independent full-service Tokyo law firm, and 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.


International Practice:

Atsumi & Sakai has an outward-looking approach to its international practice, and has foreign partners with extensive experience from leading international law firms, so providing its clients with the benefit of both Japanese law expertise and real international experience. In addition to lawyers admitted in Japan, our 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, the Republic of Korea, India, the Democratic Socialist Republic of Sri Lanka, England and Wales, and the Australian States of Queensland, New South Wales and Victoria, United States and Australian Federal laws. In addition to our Tokyo head-office and Fukuoka affiliate office in Japan, we have offices in London, Brussels and Ho Chi Minh City, and affiliated offices in New York and Frankfurt, so enabling us to provide quality services around the clock.


Innovation & Diversity:

The firm constantly seeks to anticipate its clients’ needs for new legal services, most recently those arising from the rapid technological developments in the financial services industry and strives to provide high-quality and cost-effective services and solutions to support companies new to the Japanese market. The firm also offers flexible alternative fee arrangements tailored to meet the specific needs and goals of each client company. Atsumi & Sakai takes a proactive approach to diversity, equity and inclusion (DE&I), and encourages its lawyers to maintain a good work/life balance, which has seen the firm recognised as Japan’s leading law firm for employee satisfaction.

Please visit our “DE&I” page: Respecting Diversity, Equity & Inclusion (DE&I) | Atsumi & Sakai (aplawjapan.com)


Sustainability:

It is an important social mission of Atsumi & Sakai to promote sustainability and contribute to the achievement of the Sustainable Development Goals (SDGs) that the international community aspires to and the realization of a prosperous and vibrant future through the SDGs. Our Sustainability Committee promotes sustainability within the firm and identifies key sustainability issues and discusses policies for addressing them, taking into account their contribution to and impact on the firm's stakeholders, including clients, the environment, and society.

Please visit our “Sustainability Declaration” page: Sustainability Declaration | Atsumi & Sakai (aplawjapan.com)


Main Areas of Practice

■ Antitrust/Competition

■ Banking & Finance

■ Capital Markets/Securitisation, Structured Finance

■ Construction/Infrastructure

■ Corporate/M&A

■ Corporate Investigations/Anti-Corruption Data Protection & Privacy

■ Dispute Resolution, Domestic & CrossBorder Litigation & Arbitration

■ Energy (including Oil & Gas, Renewable Energy)

■ Financial Services Regulation

■ Funds Regulation

■ Information Technology (AI/IoT)

■ Insolvency/Corporate Restructuring

■ Insurance

■ Intellectual Property

■ International Trade

■ Investment Funds/Joint Ventures

■ Labour & Employment

■ Life Sciences/Medical & Pharmaceutical Business

■ PFI/PPP

■ Private Equity & Venture Capital Projects/Project Finance

■ Real Estate (Acquisition, Financing, Development)

■ Risk Management

■ Securities Regulation

■ Shipping/Aviation

■ Sports/Entertainment

■ Tax

■ Technology, Media & Telecommunications

■ White-Collar Crime/Criminal Defence

Offices

DOMESTIC OFFICES

  • TOKYO: Atsumi & Sakai
  • FUKUOKA Affiliate Office: A&S Fukuoka LPC

INTERNATIONAL OFFICES

  • USA NEW YORK Affiliate Office: Atsumi & Sakai New York LLP
  • UNITED KINGDOM LONDON: Atsumi & Sakai Europe Limited
  • GERMANY FRANKFURT Affiliate Office: Atsumi & Sakai Europa GmbH - Rechtsanwälte und Steuerberater
  • BELGIUM BRUSSELS: Atsumi & Sakai Brussels EU
  • VIETNAM HO CHI MINH CITY: Atsumi & Sakai Vietnam Law Firm

Ranked Offices

Provided by Atsumi & Sakai

Japan - Head office

Contributions

Latest contributions provided by Atsumi & Sakai

In-Depth Overview
Authored by
Kimiharu Masaki, Mitsuru Misawa, Daniel Jarrett, Makiko Harada, Tomoko Watanabe
Article • Dec 2024
Global Practice Guide
Chie Kasahara
Authored by
Chie Kasahara
Article • Dec 2024
Global Practice Guide
Taku Sonoura
Hayato Kimura
Kenichi Tanizaki
Ciaran Rose
Hirofumi Kaji
Authored by
Taku Sonoura, Hayato Kimura, Kenichi Tanizaki, Ciaran Rose, Hirofumi Kaji
Article • Jan 2024

Atsumi & Sakai rankings

Asia-Pacific Guide 2025
Filter by
Band
Japan
Banking & Finance: Domestic
1 Department
2 Ranked Lawyers
Department
Banking & Finance: Domestic
2
Banking & Finance: Domestic
2
Band 2
Lawyers
S
Hiroo Atsumi
S
Senior Statespeople
3
Yutaka Sakai
3
Band 3
Capital Markets: Domestic: Securitisation & Derivatives
1 Department
Department
Capital Markets: Domestic: Securitisation & Derivatives
3
Capital Markets: Domestic: Securitisation & Derivatives
3
Band 3
Competition/Antitrust
1 Department
3 Ranked Lawyers
Department
Competition/Antitrust
3
Competition/Antitrust
3
Band 3
Lawyers
S
Setsuko Yufu
S
Senior Statespeople
3
Tatsuo Yamashima
3
Band 3
4
Saori Hanada
4
Band 4
Construction
1 Department
1 Ranked Lawyer
Department
Construction
Construction
Spotlight
Lawyers
Miho Niunoya
Miho Niunoya
Spotlight
Employment
1 Department
Department
Employment
3
Employment
3
Band 3
Employment: Bengoshi
1 Ranked Lawyer
Lawyers
4
Emi Uchida
4
Band 4
Life Sciences
1 Department
1 Ranked Lawyer
Department
Life Sciences
4
Life Sciences
4
Band 4
Lawyers
Harukuni Ito
4
Harukuni Ito
4
Band 4
Projects & Energy: Domestic
1 Department
1 Ranked Lawyer
Department
Projects & Energy: Domestic
2
Projects & Energy: Domestic
2
Band 2
Lawyers
Miho Niunoya
3
Miho Niunoya
3
Band 3
Real Estate
1 Department
Department
Real Estate
3
Real Estate
3
Band 3
Real Estate: Registered Foreign Lawyers
1 Ranked Lawyer
Lawyers
Russell Kawahara
3
Russell Kawahara
3
Band 3