Department profile
Lee & Ko

Competition/Antitrust

Asia-Pacific Guide 2026 : South Korea


Lee & Ko

Rankings

About

Provided by Lee & Ko

The Antitrust and Competition Practice of Lee & Ko is one of the largest and most established groups in Korea. Our team is comprised of not only experienced lawyers but also diverse yet tightly integrated experts and specialists. Notably, our in-house economists and former KFTC officials, judges, and prosecutors work closely together to develop and assess practical legal rationale that may best protect the interests of our clients.

Our practice is well known for its strength in traditional antitrust and competition areas such as cartel investigations, merger controls and antitrust litigation. Clients also recognize our expertise in unfair trade practices – particularly in matters pertaining to abuse of superior trading position, unfair affiliate support and corporate governance practices, laws and regulations on franchising, subcontracting, fair labelling and advertising, standard terms and conditions, and in conducting audits and mock dawn raids to evaluate and improve compliance. This expertise enables our clients to be best positioned in any negotiation, investigation, and dispute.

Our practice represents some of the most renowned multinational companies, consisting of a diverse range of both domestic and foreign clients across all industry sectors. In particular, our practice is highly regarded for its expertise in the semiconductor, high-tech, financial, automobile, pharmaceuticals, shipping, online platforms and information communication technology industries.

Chambers Review

Provided by Chambers

Competition/Antitrust - South Korea

Band 1

Band 1


What the Team is Known For

Lee & Ko is notable for handling KFTC investigations into cartel activities and abuse of dominance. The team is regularly instructed on merger clearance matters and is also well placed to provide effective advocacy in them. Additional areas of expertise include false advertising and unfair trade practices. Lee & Ko is a firm of choice for prominent domestic and international companies, particularly those in the technology and automotive industries and the financial sector. The team consists of highly experienced antitrust lawyers and former KFTC officials.

Work Highlights

Provided by Chambers

  • Lee & Ko represented NAVER in a KFTC in relation to online real estate platform services.

Strengths

Provided by Chambers

  • The Lee & Ko antitrust team is not only a legal expert, but also has a deep understanding of the business environment and an excellent ability to provide realistic solutions.

    Competition/Antitrust respondentAsia-Pacific
  • Even for cases predicted to be difficult to solve, Lee & Ko actively solves problems with the will and attitude to do its best until the end.

    Competition/Antitrust respondentAsia-Pacific

Notable Practitioners

Provided by Chambers

  • Senior StatespeopleYong Seok Ahn
    Senior StatespeopleYong Seok Ahn

    Yong Seok Ahn

    Ahn Yong Seok draws on over 30 years' experience in the field. His recent work includes advising on investigations into bid rigging, price fixing, false advertising and abuse of dominant position. He typically represents domestic and foreign entities in the electronics and semiconductor industry.

  • Band 1Hwan Jeong
    Band 1Hwan Jeong

    Hwan Jeong

    Jeong Hwan leads Lee & Ko's competition and antitrust practice. He advises across the full gamut of mandates, with recent experience handling merger control and KFTC investigations into alleged abuse of market dominance, price fixing and bid rigging. He works with a diverse range of clients such as entities in the financial, transportation, technology and automotive sectors.
    • Jeong Hwan is a senior lawyer with outstanding expertise and leadership skills who plays an important role in overseeing the entire case and maintaining a consistent strategy.

      Competition/Antitrust respondentAsia-Pacific
    • He is a person whose capabilities and services exceed expectations.

      Competition/Antitrust respondentAsia-Pacific
  • Band 3Jeong-Ho Sun
    Band 3Jeong-Ho Sun

    Jeong-Ho Sun

    Sun Jeong-Ho has a broad offering in competition and antitrust, with notable expertise in advising on merger filing cases. He is also equipped to handle KFTC investigations concerning abuse of market dominance and unfair trade practice issues.

    • Sun Jeong-Ho is easy to communicate with and understands the company's needs well.

      Competition/Antitrust respondentAsia-Pacific
    • Jeong-Ho takes a proactive approach by staying ahead of regulatory trends from competition authorities and informing us of potential issues.

      Competition/Antitrust respondentAsia-Pacific
  • Band 3Min-Ho Lee
    Band 3Min-Ho Lee

    Min-Ho Lee

    Lee Min-Ho continues to offer expert advice on non-contentious work such as merger filings. His clientele includes Fortune 500 companies and corporations headquartered in the USA and Europe. He also advises on contentious cases brought before the KFTC.
    • Lee Min-Ho is a widely recognised expert in antitrust law, both in theory and practice, and has deep expertise in the field.

      Competition/Antitrust respondentAsia-Pacific
    • Min-Ho is very academic and handles very difficult cases.

      Competition/Antitrust respondentAsia-Pacific
  • Band 4Miji Lee
    Band 4Miji Lee

    Miji Lee

    Lee Miji represents both domestic and foreign companies at the Korea Fair Trade Commission and court levels. She handles cases involving cartels, abuse of market dominance, unfair trade practices, unfair support practices and also merger filings.

    • Miji provides timely legal advice based on her expertise and in-depth analysis.

      Competition/Antitrust respondentAsia-Pacific
    • With a keen understanding of the latest amendments to Korean competition law and regulatory trends from the Fair Trade Commission, Miji provides immediate advice.

      Competition/Antitrust respondentAsia-Pacific
  • Band 4Suruyn Kim
    Band 4Suruyn Kim

    Suruyn Kim

    Kim Suruyn is recognised for her experience in the competition and antitrust area. She offers advice on a range of matters encompassing cartel cases, abuse of market dominance and unfair trade practice mandates.
    • She is a pleasure to work with, responsive and at the top of her game.

      Competition/Antitrust respondentAsia-Pacific
  • Up and ComingByong Ki Chung
    Up and ComingByong Ki Chung

    Byong Ki Chung

    Chung Byong Ki is a specialist in the field of fair trade and has handled a wide range of KFTC cases. He has assisted clients with cartel and bid-rigging investigations and related litigation in a variety of industries.

    • Chung Byong Ki has an excellent ability to provide real-time feedback on cases and will analyse cases from various angles.

      Competition/Antitrust respondentAsia-Pacific
    • Byong Ki is very sincere and does a great job. We were very satisfied with his service.

      Competition/Antitrust respondentAsia-Pacific

Ranked Individuals at Lee & Ko (7)

South Korea

Members

Provided by Lee & Ko

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