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Home > Lawyers > Partners > Yusuke Kaeriyama

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Yusuke Kaeriyama


Yusuke Kaeriyama is a partner at Nagashima Ohno & Tsunematsu. He represents clients before the Japan Fair Trade Commission and competition authorities in various jurisdictions. He has been involved in a large number of high-profile merger cases. He has also advised on cartel cases and other behavioural cases in various industries. He previously spent time working in the competition group of Slaughter and May in London (2009-2010) as a visiting attorney and for the Japan Fair Trade Commission (2012-2014). While he served as chief investigator of the JFTC, he handled cartel cases and other behavioural cases, and acted as a staff member of the JFTC for the ICN Unilateral Conduct Working Group.

He was educated at King’s College London (LL.M. in Competition Law, Merit) and at the University of Tokyo (LL.B.).

Education/Professional Experience


The University of Tokyo (LL.B.)


Nagashima Ohno & Tsunematsu


King's College London (University of London) (LL.M. in Competition Law, Merit)


Slaughter and May, London


Bredin Prat, Paris


Investigation Bureau, Japan Fair Trade Commission


American Antitrust Institute, Washington, D.C., Research Fellow


Partner, Nagashima Ohno & Tsunematsu


January 23, 2019

NO&T Seminars

ADVANCE Corporate Law Seminar - Pioneering the Frontier in Corporate Law
2018 Part 10 Antitrust Law Seminar "The Amended Antimonopoly Act and Latest Practice Trends"

July 30, 2018

NO&T Seminars

Introduction of Commitment Procedures under the Amended Antimonopoly Act and their Impact on FTC Case Handling

May 18, 2018


Competition Law in the Online World
From platforms to algorithms

December 1, 2017

NO&T Seminars

Preparation and Response in relation to On-Site Inspections

November 13, 2017

NO&T Seminars

ADVANCE Corporate Law Seminar - Pioneering the Frontier in Corporate Law
2017 Part 7 Antitrust Seminar
"Competition / Antitrust Law in the New Era and Latest Practice Trends of and Dealing with the Authorities"

December 10, 2015

NO&T Seminars

ADVANCE Corporate Law Seminar - Pioneering the Frontier in Corporate Law
Part 6 Antitrust Law Seminar - From Japan to the World and the World to Japan - Antitrust Practice in the Global Age

September 25, 2013


Investigative Techniques in Cartel Cases

April 27, 2011


Abuse of a superior bargaining position in practice


November, 2019


The International Comparative Legal Guide to: Cartels & Leniency 2020 - Chapter 18 Japan (Co-author)

October, 2018


The International Comparative Legal Guide to: Cartels & Leniency 2019 - Chapter 18 Japan (co-author)

July, 2018


Chambers Global Practice Guides Merger Control 2019 Japan - Law & Practice (co-author)

July, 2018


Case comments on Coty Germany GmbH v Parfümerie Akzente GmbH Court of Justice (6 December 2017), Case C-230/16 (co-author)

NBL No.1126 (July 15, 2018)

September, 2017


The Japan Fair Trade Commission’s proposed ‘commitment procedure’: a more flexible approach to investigations of potential anti-competitive behavior?

NO&T Japan Legal Update No.11 (September, 2017)

August, 2017


"The law and practice of antitrust gun jumping and information exchange - for M&A practitioners" (co-author)

Shojihomu Co., Ltd.

June, 2017


Big data and merger regulation

Jurist No.1508 (July, 2017)

June, 2017


The International Comparative Legal Guide to: Vertical Agreements and Dominant Firms 2017 Japan (co-author)

September, 2016


Territorial restriction - Sankogan case

Business Law Journal No.104 (November, 2016)

March, 2012


"U. S. antitrust laws 2nd Edition" (co-author)

University of Tokyo Press

April, 2011


Follow-on damages actions against cartelists in the EU

NBL No.951 (April 15, 2011)

April, 2011


Exploitative abuses of a dominant position under EU competition law (first and second volumes)

Kokusai Shojihomu Vol.39 No.4 (April, 2011) Kokusai Shojihomu Vol.39 No.5 (May, 2011)

February, 2007


The Leniency Programme

International Law Office Online Newsletter “Competition & Antitrust-Japan”


April 4, 2019


High evaluation received in the 2020 Edition of "The Best Lawyers in Japan"