Tsuyoshi Ikeda, a former investigator for Japan Fair Trade Commission (JFTC), has left Japanese Big Four law firm Mori Hamada & Matsumoto to start an antitrust and consumer protection boutique called Ikeda & Someya.

During his time at the JFTC, Ikeda participated in around 20 dawn raids, prepared the implementation of the leniency system and investigated a case involving standard-essential patents.

At Mori Hamada, where Ikeda was a counsel, he worked on cartel, merger review, and other types of antitrust/competition cases. Earlier, he was an associate attorney at Oh-Ebashi LPC & Partners.