Mr Yoshitoshi Imoto > Nagashima Ohno & Tsunematsu > Tokyo, Japan > Lawyer Profile

Nagashima Ohno & Tsunematsu
TOKYO 100-7036

Work Department

Antitrust/Competition Practice Group


Yoshitoshi Imoto is a partner at Nagashima Ohno & Tsunematsu. He advises on all aspects of competition law for both domestic and multi-national clients in connection with M&A, strategic alliance projects, IT/digital antitrust matters as well as cartel investigations and follow-on private lawsuits.

He has abundant experiences and expertise in handling merger control for high profile mergers particularly in pharmaceutical industry, semi-conductor and electronics sectors and highly concentrated chemical/metal and other materials businesses. His recent professional highlights also include counseling for both domestic and international clients in relation to international cartel investigations on electronics, financial products and auto-parts.


Keio Law School, Lecturer (2006), Nagashima Ohno & Tsunematsu NY LLP, New York (2008-2010 inclusive of its predecessor firm), Slaughter and May, Brussels (Competition Group, 2012-2013)


Japanese and English


Daiichi Tokyo Bar Association (2002)


The University of Tokyo (LL.B., 2001), Harvard Law School (LL.M., 2008)

Lawyer Rankings

Japan > Antitrust and competition: Independent local firms

(Leading individuals: Bengoshi)

Yoshitoshi ImotoNagashima Ohno & Tsunematsu

Nagashima Ohno & Tsunematsu is active on high value domestic and international matters across a broad range of industries, including pharmaceuticals, energy, IT and private equity. The department benefits from a strong relationship with the JFTC, allowing significant insight into antitrust/competition law. Team lead Yoshitoshi Imoto has expertise in high-profile merger cases and complex government investigations, with international experience working within the US and EU. Kaoru Hattori handles cartel investigations, and advises on competition law issues in contractual alliances and transactions, while Ryohei Tanaka acts for both multi-nationals and major domestic corporations in merger control proceedings before the JFTC. The team has grown with the promotion of Satoshi Ogawa and Nobuaki Ito to partner in early 2022.