Nagashima Ohno & Tsunematsu‘s practice stands out for its 'profound expertise in antitrust law which is complemented by a deep understanding of the local market dynamics', offering clients comprehensive support across a range of competition and antitrust matters. Practice head Yoshitoshi Imoto focuses on merger cases and complex government investigations. Kaoru Hattori has extensive experience handling high profile carter investigations, and Ryohei Tanaka has expertise in merger control proceedings. Leveraging his experience at the JFTC, Yusuke Kaeriyama manages merger cases, antitrust investigations, and litigation. Nobuaki Ito is a key name to note for international and domestic mergers and antitrust investigations.

Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

  • ‘The individuals I have had the pleasure of working with truly stand out for several reasons, and their unique qualities set them apart from their competitors.’

  • ‘Their profound expertise in antitrust law is complemented by a deep understanding of the local market dynamics. This insight allows them to provide tailored solutions that are not only legally sound but also strategically advantageous for their clients.’
  • ‘The commitment to client service displayed by the team is exemplary. They prioritize building strong relationships, demonstrating reliability and responsiveness that enhances collaboration. Their dedication to addressing client needs and providing clear communication has made them an invaluable asset in navigating challenging cases. This level of engagement fosters trust and ensures that clients feel well-supported throughout the legal process.’
  • ‘Nagashima Ohno & Tsunematsu is very professional in the field of antitrust and competition. Lawyers of different seniority always work together to provide the best legal service. The quality of their work is always highly appreciated.’

  • ‘We mainly worked with Ms. Kaoru Hattori, who is a very capable female lawyer. She impressed us not only by her insightful legal opinions, but also by her efficient case management. She is always very hands-on and makes sure that all the work is being well supervised and keeps the service provided by her team on a high level. Along with her high professionality, she is also very easy to communicate.’

  • ‘Nagashima Ohno is top-notch with a large, highly-skilled team. They are reliable, internationally-oriented, and well-versed in handling large, complex transactions.’

  • ‘Nagashima Ohno & Tsunematsu's Antitrust and Competition practice stands out as a beacon of excellence in a complex field. Several key aspects contribute to the uniqueness of this practice, making it an attractive choice for potential clients. The team posses a profound understanding of both Japanese and global antitrust laws, which enables them to adeptly navigate cross-border competition issues. They emphasize the unique challenges needs of every clients, while collaborating with other practice areas within the firm to use comprehensive service. The combination of their specialized expertise, proactive compliance strategies, and innovative client-centric practices sets them apart in the antitrust landscape, and makes them a compelling choice in a competitive legal environment. ’

Key clients

  • Booking.com
  • Nitto Denko Corporation
  • Suzuki Motor Corporation
  • FUJIFILM Corporation
  • Takeda Pharmaceutical
  • Softbank KK
  • Panasonic Corporation
  • Isuzu Motors Ltd.
  • Mitsubishi Gas Chemical Company Inc.
  • Dentsu Group Inc.
  • Toshiba Corporation
  • CVC Asia Pacific Limited
  • Ricoh Company Ltd.

Lawyers

Leading partners: Bengoshi
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Next Generation Partners: Bengoshi
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.

Practice head

The lawyer(s) leading their teams.

Yoshitoshi Imoto

Other key lawyers

Kaoru Hattori, Daisuke Fukamizu, Ryohei Tanaka, Yusuke Kaeriyama, Nobuaki Ito