Competition/Antitrust

Helping our clients navigate an increasingly challenging and globalized environment to achieve the best possible outcome

Our antitrust and competition practice is one of the largest and most established in Japan. We are regularly involved in the most high-profile and challenging cases in antitrust enforcement in Japan, Asia, and beyond. Our track record of successful clearance and favorable outcomes for the client are unrivaled by many other law firms in Japan and we strive to be the best antitrust and competition practice in the country.

Consistently top-ranked in the leading legal directories, our antitrust and competition practice consists of highly qualified lawyers, many of whom are partners and senior associates practicing antitrust and competition law on a full-time basis and who have prior experience working abroad and/or working for the Japan Fair Trade Commission (JFTC). Our lawyers work closely together with an adviser and special counsels within the team, such as renowned academics and former government officials, who provide valuable insights into the workings of the JFTC and various regulators.

We regularly work with leading firms around the world in representing clients in cross-border merger filings and global investigations. As such, our lawyers are fully aware of both the local and international dimensions of antitrust and competition issues and procedures and are fully capable of providing one-stop service for matters of such scope and magnitude with careful planning and coherent strategy. Over the decades, we have developed strong relationships with many of the leading law firms and economic consulting firms in major jurisdictions around the globe.

Our firm stands out from other law firms in Japan particularly in the following respects:

  • recognized as one of the leaders in the field of M&A, the members of the antitrust and competition practice are experienced in securing smooth clearance from the JFTC and competition authorities in other jurisdictions;
  • our team comprises dedicated lawyers, former senior government officials, and academics with experience working at the leading-edge of antitrust law enforcement;
  • global network of law firms and specialists that extends beyond our offices in Japan; and
  • strong support from our other Practice Groups such as Regulatory, Intellectual Property, and Litigation and Dispute Resolution, which are also recognized as leading practices in Japan.


Our antitrust and competition lawyers provide forward-looking, business-centric advice and counseling on all aspects of antitrust and competition law issues, including:

  • merger control;
  • regulatory investigations;
  • competition related litigation;
  • counseling on antitrust and competition law; and
  • compliance counseling and training.

Merger Control

  • obtaining regulatory clearance from the JFTC and antitrust and competition authorities in other jurisdictions in connection with mergers and acquisitions, joint ventures, and/or group restructuring transactions;
  • counseling on regulatory risks and possible solutions;
  • representing clients in negotiation with the JFTC and other authorities to minimize the scope of remedial measures; and
  • advising clients on other practical issues in undergoing mergers and acquisitions, including “gun jumping”.

Government Investigations

assisting clients in investigation of alleged cartels (both domestic and international cartels) or single firm conduct (including monopolization and unfair trade practices) which may include the following:

-  advising clients on the best defense options in relation to dawn raids, requests for information, subpoenas, investigative interviews, and hearings;

-  applying for immunity or leniency and providing necessary cooperation to the authorities in order to effectuate the immunity or leniency position;

-  negotiating with the authorities regarding fines and other sanctions; and

-  assisting clients with internal investigations for possible antitrust and competition law violations.

Competition related Litigation

  • representing clients in appealing the decisions of the competition authorities;
  • representing clients in litigations which include antitrust claims;
  • representing clients in follow-on damages litigations; and
  • negotiating settlements in relation to the foregoing litigations.

Counseling on Antitrust and Competition Law

Giving transactional advice, preparing contracts, and negotiating in connection with:

-  sales and distribution arrangements, marketing strategies, product development, and sales strategies;

-  business alliances, including joint research and development programs;

-  intellectual property licensing and other intellectual property related transactions;

-  agency and subcontracting; and

-  services for campaigns, advertisements, and publicity (including providing premiums).

Compliance Counseling and Training

  • advising clients in introducing and establishing global antitrust and competition law compliance programs;
  • assisting clients in drafting and reviewing antitrust and competition law related policies, rules, and manuals; and
  • providing in-person audit services and training sessions to the executives and employees of clients.
     

Brochure Download

Competition/Antitrust:People

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Competition/Antitrust:Newsletters

TECH, IP AND TELECOMS LAW UPDATES
TECH, IP AND TELECOMS LAW UPDATES Vol.8 March 2024
TECH, IP AND TELECOMS LAW UPDATES
TECH, IP AND TELECOMS LAW UPDATES Vol.7, January 2024
TECH, IP AND TELECOMS LAW UPDATES
TECH, IP AND TELECOMS LAW UPDATES Vol.6, November 2023
TECH, IP AND TELECOMS LAW UPDATES
TECH, IP AND TELECOMS LAW UPDATES Vol.5 September 2023
TECH, IP AND TELECOMS LAW UPDATES
TECH, IP AND TELECOMS LAW UPDATES Vol.4 July 2023

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Competition/Antitrust:News

Awards
An article written by two of the firm's lawyers, Yusuke Takamiya and Kohei Shiozaki, has been nominated for the Antitrust Writing Awards 2024
Awards
The Best Lawyers in Japan™ and Best Lawyers: Ones to Watch in Japan™ (2025 edition)
Awards
Top rankings received from The Legal 500 Asia Pacific 2024
Awards
Top rankings received from Chambers Asia-Pacific 2024
Awards
MHM lawyers selected in “Who’s Who Legal: Global Practice Area Report 2023” and “Thought Leaders Report 2023”

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Competition/Antitrust:Seminars

Feb. 22, 2024External Seminars
"Quarterly Bay Area Antitrust Discussion: Lunar New Year Event - Antitrust Trends and Hot Topics in Asia"
Dec. 8, 2023External Seminars
"Intellectual Property & Antitrust: A Regional Perspective and Enforcement Update"
Oct. 18, 2023External Seminars
"Competition and ESG: Challenges and Perspectives"
Oct. 18, 2023External Seminars
"ICN Annual Conference 2023 Barcelona Breakout Sessions Round 1 'Sustainability and Competition Policy' "
Sep. 15, 2023External Seminars
"Competition Law and Policy Trends in Japan’s Digital Economy"

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Competition/Antitrust:Publications

Magazine Article
"Cross-Sector Cybersecurity Laws (Vol. 6): Cybersecurity x Antitrust and Competition Laws - Matters to be Considered under Antitrust and Competition Laws in Efforts to Improve Cybersecurity"
Magazine Article
"Outline of Global Seminar (Tokyo) by Antitrust Law Section of American Bar Association"
Magazine Article
"Corporate Legal Affairs Frontier (No.263): Outline of Newly Introduced Regulations on Stealth Marketing and their Impact on Marketing"
Magazine Article
"Practical Issues Concerning Joint Ventures (3) - Including from the Perspective of Operating of Joint Ventures"
Magazine Article
"Practical Issues Concerning Joint Ventures (2) - Including from the Perspective of Operating of Joint Ventures"

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