- North America
United States


Our team has an unparalleled track record of success supporting our clients on their U.S. - Japan related business matters, including M&A transactions, commercial litigation and internal investigations.
Nishimura & Asahi is the largest law firm in Japan and the largest international law firm headquartered in Japan. Our lawyers, a team skilled in U.S.-related matters based in our New York office as well as U.S. licensed attorneys working in our other offices, regularly advise on U.S. - Japan related matters, including sophisticated business transactions, litigation, regulatory investigations and regulatory filings. Our New York office further allows us to efficiently and effectively support our clients throughout the United States to achieve their business objectives.
Our attorneys have significant experience advising clients on in-bound and out-bound U.S. M&A transactions, joint-ventures, strategic alliances and complex finance transactions. We also regularly coordinate due diligence exercises and assist clients to navigate through the different deal making techniques deployed in the United States and Japan. We champion ourselves as cross-border deal makers and problem solvers, with our attorneys providing practical business solutions.
As the global economy becomes more interconnected, multi-jurisdictional issues are becoming increasingly more common for companies to experience. We have a proven track record successfully advising our clients on how to handle these issues, including regulatory investigations, litigation, trade disputes and merger filings. Our knowledge of Japanese and U.S. legal regimes and business practices allows us to effectively develop litigation strategy and conduct fact finding, evidence gathering, discovery, and preparation for cross-examination.
We regularly work in collaboration with foremost U.S. law firms and we are the sole Japan member of the world leading Lex Mundi network of independent law firms.
Recent Work
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- 2023
- Japan Post Insurance Co., Ltd. - Strategic alliance with KKR & Co. Inc. and Global Atlantic Financial Group
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- 2022
- ORIX Corporation: Basic agreement to acquire shares of DHC Corporation
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- 2022
- Honda Motor Co., Ltd. - Joint venture with LG Energy Solution for EV battery production in the U.S.
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- 2022
- Major Japanese manufacturing company: Sale of automotive parts-related businesses in the United States and Europe
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- 2022
- Represented T&D Holdings and its affiliate in Fortitude Re’s total transaction value of $2.2 billion acquisition of Prudential’s legacy variable annuity business
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- 2022
- Daikin Industries, Ltd. - Acquisition of Duplomatic MS S.p.A
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- 2022
- Honda Motor Co., Ltd. - Codevelopment of affordable EVs with General Motors
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- 2022
- Honda Motor Co., Ltd. - Investment in Helm.AI Inc.
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- 2022
- Honda Motor Co., Ltd. - Acquisition of shares in SES AI Corporation in relation to SES Holdings Pte. Ltd.’s listing on the NYSE via a SPAC transaction
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- 2022
- Sale of U.S. and European businesses by major Japanese manufacturer
Awards & Rankings
Seminars
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The Latest Trends in AI Regulations in Japan and Abroad
Online
External Seminars
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Speaking engagement: Nishimura & Asahi NY LLP and KPMG US co-hosted the seminar “How we best govern US subsidiaries”
New York
Nishimura & Asahi Seminars
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Webinar: Guidelines for Respecting Human Rights in Responsible Supply Chains for Japanese companies in North America
Online
External Seminars
Publications
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What is Generative AI? Legal regulations in each country and legal issues when using it for business explained in an easy-to-understand manner
Articles
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Article: Practical Responses to US Economic Security Measures
Articles
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Nishimura Institute of Advanced Legal Studies (“NIALS”) Report by the “CLOUD Act Study Group” (Ver. 2.0)
Others