Best Antitrust Litigation Lawyers in Japan

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Takayama Total Law Office
Fukuoka, Japan

Founded in 2011
15 people in their team
English
Takayama Law Office, now Meilin International Law Firm (Former Takayama Law Office), is a Fukuoka-based law firm with deep expertise in corporate and commercial matters, banking and finance, and dispute resolution. The firm handles corporate governance, M&A, general corporate matters, contract...
Daiichi Law Offices
Osaka, Japan

Founded in 1964
50 people in their team
Japanese
English
Founded in Osaka in 1964, Daiichi Legal Professional Corporation is a full-service commercial law firm representing domestic and global companies through its Tokyo and Osaka offices. We also assist individuals in the areas of wills and estate as well as criminal defense mostly on white-collar...

Founded in 2021
50 people in their team
Japanese
English
Tokyo Kokusai Partners Law Office (TKP Law) was established in January 2021 by attorneys and paralegals who have been specialising in foreign and international matters.TKP Law aims to create a tolerant and symbiotic society that is suitable for today’s global society by gathering the wisdom of...
Tozai Sogo Law Office
Tokyo, Japan

Founded in 1994
10 people in their team
English
Tozai Sogo Law Office is a Tokyo-based law firm that delivers cost-effective, high-quality legal services for business clients. Its practice encompasses general corporate matters, international corporate transactions, outsourced in-house legal department services, and employment law, with bilingual...

Founded in 2018
4 people in their team
English
Maekawa Law Office is a bilingual Osaka-based law firm specializing in cross-border matters and international dispute resolution. The practice blends Japanese and common law expertise to support domestic and foreign clients in complex disputes, negotiations, and arbitrations. Led by Naoki Maekawa,...
Onizuka Law Office
Fukuoka, Japan

Founded in 2025
1 person in their team
English
Onizuka Law Office specializes in corporate and employment law for executives and managers in Japan, handling unpaid overtime claims, wage and hour disputes, M&A related legal matters, and ongoing corporate advisory services. The firm focuses on practical, results oriented strategies that protect...
Kuretake Law Office
Tokyo, Japan

Founded in 1998
5 people in their team
English
Kuretake Law Office, established in April 1998 in Tokyo, provides comprehensive legal services across family, corporate, and dispute resolution matters. The firm has earned a reputation for practical, client focused advocacy and for delivering reliable guidance through complex legal issues in Japan...
MASUDA & PARTNERS LAW OFFICE
Chiyoda-ku, Japan

Founded in 2008
50 people in their team
Japanese
English
Masuda & Partners Law Office was established in February 2008, led by founding attorney Eiji Masuda. Since that start, our firm has been involved in numerous domestic and international matters, mainly in the areas of corporate legal affairs, business-to-business disputes, and intellectual...
Kameido Law Office
Tokyo, Japan

Founded in 1990
2 people in their team
English
Kameido Law Office operates in the Kameido district of Tokyo and has served the local community for more than 40 years. The firm reports over 200 consultations annually, reflecting a steady stream of client matters and a track record of practical, results oriented advice. It emphasizes accessible...
Yokohama Partner Law Office
Yokohama, Japan

Founded in 2000
50 people in their team
Japanese
English
When I was little, I loved "The Crying Red Demon." This is a fairy tale by Hirosuke Hamada. Red Demon wants to get along with humans, but everyone is afraid of him. So, I put up a sign in front of my house to try to get people to come visit me.I am a kind-hearted demon.Anyone is welcome to come.We...
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About Antitrust Litigation Law in Japan

Antitrust litigation in Japan concerns the enforcement of laws that promote fair competition and prevent unfair business practices. The Japanese Fair Trade Commission (JFTC) is the main authority responsible for overseeing compliance with the Antimonopoly Act (AMA). This law prohibits a wide range of anti-competitive behaviors such as cartels, bid-rigging, monopolization, and unfair trade practices. Legal proceedings may be initiated by the JFTC, affected businesses, or consumers when a violation is suspected. Antitrust litigation is a specialized field that often involves complex legal and economic issues, and cases can be resolved through administrative, civil, or criminal procedures.

Why You May Need a Lawyer

Legal matters involving antitrust issues can be intricate and have significant implications for businesses and individuals. You may need a lawyer if you:

  • Have been accused of violating the Antimonopoly Act, such as participating in price-fixing, bid-rigging, or abuse of dominant market position.
  • Are a business that suspects a competitor has engaged in anti-competitive conduct affecting your operations.
  • Need to navigate interactions with the JFTC during investigations or dawn raids.
  • Require advice on compliance programs to ensure your business activities comply with antitrust laws.
  • Have suffered financial loss due to the alleged anti-competitive behavior of another company and are considering bringing a claim for damages.
  • Need guidance on mergers or acquisitions and how they may be affected by antitrust regulations.
In all these cases, specialized legal knowledge is crucial for protecting your rights and interests.

Local Laws Overview

In Japan, the foundation of antitrust law is the Antimonopoly Act (AMA), enforced by the JFTC. This act aims to maintain free and fair competition by prohibiting certain conduct:

  • Cartels and Collusion: Agreements among competitors that restrict competition, such as price-fixing or dividing markets, are illegal.
  • Unfair Trade Practices: These include unfair pricing, abuse of superior bargaining position, and discriminatory treatment between trading partners.
  • Monopolization: Actions that create or maintain a monopoly, preventing fair market competition, are not allowed.
  • Merger Control: Mergers or acquisitions that may substantially restrain competition must be reported to the JFTC and can be blocked or conditioned.
Violations can lead to severe penalties, including cease-and-desist orders, surcharges (fines), and even criminal sanctions. Recent reforms have strengthened private enforcement, allowing affected parties to seek damages through civil litigation.

Frequently Asked Questions

What is considered an antitrust violation in Japan?

An antitrust violation under the Antimonopoly Act covers practices such as cartels, bid-rigging, price-fixing, abuse of market dominance, certain exclusive trading arrangements, and unfair business practices that restrict free competition.

Who enforces antitrust laws in Japan?

The Japanese Fair Trade Commission (JFTC) is responsible for investigating and enforcing the Antimonopoly Act. It can conduct investigations, impose administrative penalties, and refer cases for criminal prosecution.

Can individuals or companies bring lawsuits for antitrust violations?

Yes. Any person or business that has suffered damages due to anti-competitive conduct can file a civil lawsuit seeking compensation. The process often involves complex legal and economic analysis.

What penalties can be imposed for antitrust violations?

Penalties can include administrative surcharges (fines), orders to cease illegal conduct, and, in serious cases, criminal prosecution where individuals can face imprisonment and businesses can incur additional fines.

What is a "leniency program" in the context of Japanese antitrust law?

Japan has a leniency program allowing companies involved in cartels or bid-rigging to receive reduced or waived penalties if they voluntarily report their wrongdoing and cooperate with authorities during investigations.

Are mergers and acquisitions regulated under antitrust law?

Yes. Certain mergers and acquisitions must be reported to the JFTC if they meet specified criteria, particularly if the deal could potentially restrict market competition.

How long do antitrust investigations or litigation usually take?

The duration varies but administrative investigations may take several months to over a year. Civil or criminal litigation can also be lengthy, depending on the complexity of the case.

Can foreign companies be subject to Japanese antitrust laws?

Yes. Japanese antitrust laws can apply to foreign entities if their business activities have a significant impact on competition in Japanese markets.

What defenses are available against antitrust allegations?

Businesses or individuals may argue that their conduct did not restrict competition or that it was justified for efficiency reasons. Legal advice is crucial to develop a strong defense strategy.

How can businesses reduce the risk of antitrust violations?

Implementing compliance programs, regularly reviewing business practices, training staff, and seeking legal guidance on contractual arrangements can significantly reduce the risk of violating antitrust laws.

Additional Resources

For further information and assistance regarding antitrust litigation in Japan, consider the following resources:

  • Japanese Fair Trade Commission (JFTC) - The official authority on enforcement, guidelines, and policy statements.
  • Japan Federation of Bar Associations - Provides information on legal professionals specializing in competition law.
  • Ministry of Economy, Trade and Industry (METI) - Offers materials on business compliance and fair trade practices.
  • Local law offices with antitrust and competition law experts.
Consulting these resources can help you better understand your rights and obligations under Japanese antitrust law.

Next Steps

If you believe you may be involved in an antitrust issue or if you have been contacted by the JFTC, it is crucial to act quickly:

  • Gather all relevant documents and evidence related to your business operations or the suspected anti-competitive conduct.
  • Do not make statements to authorities or competitors without first seeking legal advice.
  • Contact a Japanese attorney who specializes in antitrust and competition law, ideally with experience in handling cases before the JFTC and Japanese courts.
  • Discuss your situation confidentially and review your options, including potential defenses or compliance steps.
  • Follow your lawyer's advice on how to interact with investigators and protect your business interests.
Early legal intervention can make a significant difference in protecting your rights and minimizing risks in antitrust litigation cases.

Lawzana helps you find the best lawyers and law firms in Japan through a curated and pre-screened list of qualified legal professionals. Our platform offers rankings and detailed profiles of attorneys and law firms, allowing you to compare based on practice areas, including Antitrust Litigation, experience, and client feedback.

Each profile includes a description of the firm's areas of practice, client reviews, team members and partners, year of establishment, spoken languages, office locations, contact information, social media presence, and any published articles or resources. Most firms on our platform speak English and are experienced in both local and international legal matters.

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Disclaimer:

The information provided on this page is for general informational purposes only and does not constitute legal advice. While we strive to ensure the accuracy and relevance of the content, legal information may change over time, and interpretations of the law can vary. You should always consult with a qualified legal professional for advice specific to your situation.

We disclaim all liability for actions taken or not taken based on the content of this page. If you believe any information is incorrect or outdated, please contact us, and we will review and update it where appropriate.