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Kosuke Tsunashima
Partner
Tokyo
Key Practice Areas
International Litigation and Cross-Border Disputes
Securities Disputes and Other Corporate Scandals
Product Liability Disputes
Financial and Securities Dispute Resolution
Civil and Commercial Disputes (General)
TEL: 81-3-6775-1201
/FAX: 81-3-6775-2201
Kosuke Tsunashima represents domestic and international clients across diverse industries in litigation, mediation, arbitration, and other forms of dispute resolution. His practice covers a wide range of commercial disputes, including those arising from M&A, finance transactions, real estate, product liability and intellectual property. He has extensive experience leading complex mass litigation, including securities litigation and other large-scale disputes.
In addition to his dispute resolution practice, Kosuke Tsunashima has substantial experience in corporate matters. He has advised numerous overseas clients on investments into Japan, assisting with the establishment of Japanese branches and subsidiaries, navigating regulatory requirements, and drafting various contracts essential for their business operations in Japan.
SERVICES
Practice Areas
Key Practice Areas
Dispute Resolution
Related Practice Areas
Government Investigations and Crisis Management
Finance and Financial Institutions
Real Estate
Labor and Employment
Media and Entertainment
Tech/Data/IT/Telecom
Competition/Antitrust
International Practice
Industries
Banks
Securities
Real Estate and REIT
Telecommunication, Media, and Entertainment
IT, Internet and Security
Medical, Pharmaceutical, Healthcare, Life Science and Biotechnology
Sports
Automotive, Ship and Machinery
Food and Beverage
Brand and Apparel
Electronics and Equipment
Consumer Product and Retail
Trading
Construction and Infrastructure
Hospitality and Gaming
Financial Technology (FinTech)
Digital
Aviation/Space
AI/Technology
RELATED INSIGHTS
SEMINARSSeminars
PUBLICATIONSPublications
CAREER
2008
Keio University (LL.B)
2008 - 2009
The Legal Training and Research Institute of the Supreme Court of Japan
Aug 2014 - May 2015
Graduate study, University of California, Los Angeles School of Law (LL.M)
Sep 2015 - Sep 2016
Associated with Corrs Chambers Westgarth, Melbourne
Oct - Dec 2016
Associated with Corrs Chambers Westgarth, Sydney
Jan 2024 -
Officer, Litigation Committee (Regional Representative Asia Pacific), International Bar Association
QUALIFICATIONS
Japan (2009) New York (2017)
PROFESSIONAL AND
ACADEMIC ASSOCIATIONS
ACADEMIC ASSOCIATIONS
Daini Tokyo Bar Association
LANGUAGES
Japanese (first language)
English
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Kosuke Tsunashima
TEL: 81-3-6775-1201
/FAX: 81-3-6775-2201
International Litigation and Cross-Border Disputes
Securities Disputes and Other Corporate Scandals
Product Liability Disputes
Financial and Securities Dispute Resolution
Civil and Commercial Disputes (General)