YOON&YANG

• Antitrust & Competition
• Cartel
• Merger Filings
• Unfair Affiliate Transactions
• Subcontracting
• Distribution
• Antitrust & Competition Compliance
• Antitrust & Competition Litigation
• Abuse of Market Dominance
• Unfair Trade Practices
• Antitrust & Competition Litigation
• Corporte Governance ∙ Conglomerates ∙ Holding Companies

• 2008-present Yoon & Yang LLC
• 2025-present Outside Director, Oheim & Company Co.,Ltd.
• 2024-present Director, Korea Competition Law Association
• 2022-present Outside Director, Hyundai BNG Steel
• 2021-present Fair Trade Lecturer, The Lawtimes (Legal Edu)
• 2021-present Fair Trade Lecturer, Korean Institute of Certified Public Accountants
• 2021-present Lecturer, Korea Bar Association/Seoul Bar Association
• 2021-present Board Member, Gangnam-gu Sports Council
• 2018-present Non-Government Advisor, International Competition Network
• 2012-present Lecturer, Fair Competition Federation (Fair Trade Act, Subcontracting Act, Large Retail Business Act)
• 2014-23 Legal Advisor and Board Member, Korean Federation of Middle & High School Athletic Associations
• 2014-23 Lecturer, Korea Productivity Center (Fair Trade Act, Subcontracting Act)
• 2013-15 Lecture, Maeil Economy Education Center (Lage Retail Business Act, Franchise Business Act)
• 2005-08 Public-Service Advocate, Ministry of Justice

• 2014 Yonsei University Graduate School of Business (Franchise Expert Program)
• 2013 University of Southern California Gould School of Law (LL.M.)
• 2010 Seoul National University School of Law (Fair Trade Law Research Program)
• 2010 Hanyang University Graduate School of Law (International Trade Law Course completion)
• 2005 Judicial Training & Research Institute
• 2003 Seoul National University (B.A. in Psychology)

[Cartel]

• KFTC investigation into cartel related to LTV interest rates
• KFTC investigation into cartel in the government bond market
• KFTC investigation into cartel in indemnity insurance
• KFTC investigation and administrative litigation regarding cartel in the broiler chicken industry
• Administrative litigation over vaccine bid-rigging
• KFTC investigation and administrative litigation on cartel in steel scrap purchasing by rebar companies
• KFTC investigation into cartel in aluminum bidding for Hyundai-Kia Motors
• KFTC investigation into cartel in rebar sales by steelmakers
• KFTC investigation into cartel by Japanese aluminum capacitor manufacturers
• International cartel case involving fuel surcharges
• International cartel case involving marine hoses
• KFTC investigation into cartel in government procurement of system air conditioners (home appliances cartel)
• International cartel case involving LIBOR and other interest rates
• KFTC investigations into cartel in construction projects such as Honam High-Speed Rail, Gyeongin Canal, and Daegu Metro

[Unfair Support & Improper Provision of Benefits]

• KFTC investigation into improper benefit provision to related parties by Hanwha Group affiliates
• KFTC investigation into unfair support among SPC Group affiliates
• KFTC investigation into unfair support and improper benefit provision by Hanjin Group affiliates
• KFTC investigation into improper benefit provision to related parties by Taekwang Group affiliates
• KFTC investigation into unfair support among LS Group affiliates
• KFTC investigation into unfair support among E-Land Group affiliates
• KFTC investigation into unfair support among HiteJinro Group affiliates
• KFTC investigation into unfair support among Dongwon Group affiliates
• KFTC investigation into unfair support among affiliates of Group S
• KFTC investigation into unfair support among affiliates of Group B
• KFTC investigation into unfair support among affiliates of Group D
• KFTC investigation into unfair support among affiliates of Group H
• Compliance advisory services including establishment of internal transaction review committees for major domestic companies

[Subcontracting Act]

• KFTC investigation into unfair subcontracting practices by home appliance companies
• KFTC investigation and administrative litigation regarding unfair subcontracting by Samsung SDI
• KFTC investigation into unfair subcontracting by LG Chem
• KFTC investigation into unfair subcontracting by Hanwha Systems
• KFTC investigation into unfair subcontracting by STX Engine
• KFTC investigation into unfair subcontracting by Dongwon Loex
• KFTC investigation into unfair subcontracting by Daewoo Shipbuilding & Marine Engineering
• KFTC investigation into unfair trade practices by convenience store franchisors
• Legal advisory on bid participation restrictions for major companies

[Franchise Business Act]

• Legal representation and/or advisory in franchise margin lawsuits involving BR Korea, Goobne Chicken, Puradak, Frank Burger, Genesis BBQ, and others
• KFTC investigation and administrative litigation involving Genesis BBQ’s violation of the Franchise Business Act
• KFTC investigation and administrative litigation involving Puradak’s violation of the Franchise Business Act
• KFTC investigation and administrative litigation involving BR Korea’s violation of the Franchise Business Act
• Constitutional petition regarding the enforcement decree of the Franchise Business Act (franchise margin)

[Unfair Trade Practices & Agency Act]

• KFTC investigation into Agency Act violations by automobile companies
• KFTC investigation into Agency Act violations by tire companies
• KFTC investigation into unfair trade practices by electric bus manufacturers/importers
• Legal response to KFTC investigations and damages lawsuits involving unfair trade by telecom companies and smartphone manufacturers
• Damages lawsuit related to unfair trade practices by beverage company N
• KFTC investigation into Agency Act violations by footwear importer A
• Compliance advisory on the Agency Act for affiliates of Groups S and E

[Large-Scale Retail Business Act]

• KFTC investigation into violations of the Large-Scale Retail Business Act by Daiso
• KFTC investigation into violations by Wemakeprice
• KFTC investigation into violations by Hyundai Department Store
• KFTC investigation and consent decision involving Korea Seven
• Legal and compliance advisory for department stores, outlets, convenience stores, and home shopping companies including H, E, S, and G

[Fair Trade-Related Damages Litigation]

• Damages litigation involving elevator cartel
• Damages litigation involving cable manufacturers' cartel
• Damages litigation related to subcontracting violations by a logistics company
• Damages litigation related to vaccine bid-rigging
• Damages litigation involving cartel in plate and coil transportation

[Compliance]

• CP (Compliance Program) consulting for Hyundai Motor Group affiliates
• CP consulting for LG Group affiliates
• CP consulting for Taekwang Group affiliates
• CP consulting for Hanwha Group affiliates
• CP consulting for Toss Group affiliates
• CP consulting for KT Group affiliates

• Leading Individual, Competition/Antitrust, Chambers and Partners Asia-Pacific (2024-2025)
• Client Choice Awards, Competition, Lexology (2024-2025)
• Litigation Star, Competition/antitrust, Benchmark Litigation Asia-Pacific (2024-2025)
• Best Lawyer, Antitrust & Competition, Korea JoongAng Daily (2024)
• Lawyer of the Year, Antitrust & Competition, Legal Times (2020)

[Books]

• Subcontracting Law (practical guide to corporate transactions), Fair Competition Federation (Co-author, 2020)

[Academic Papers]

• Korea Chapter, Multi-jurisdictional Updates: Competition, Practical Law, Thomson Reuters (Co-author, 2024-2025)
• Korea Chapter, Antitrust Litigation, Chambers Global Practice Guides, Chambers and Partners (Co-author, 2024)
• Competition Law in South Korea: Overview, Practical Law, Thomson Reuters (Co-author, 2023)
• Korea Chapter, Merger Control, Chambers Global Practice Guides, Chambers and Partners (Co-author, 2023)
• Korea Chapter, Mergers, Cases and Precedents, Global Competition Review (co-author, 2021)
• Korea Chapter, Cartels, Cases and Precedents, Global Competition Review (Co-author, 2021)
• Korea Chapter, Franchise Law Review, Law Business Research (Co-author, 2017-2019)
• Korea Chapter, e-Commerce, Getting the Deal Through, Law Business Research (Co-author, 2017-2019)
• Korea Chapter, Know how - Immunity, Sanction & Settlements, Global Competition Review (Co-author, 2015-2020)
• Applicable Law regarding Tender Cartel and Calculation of Related Sales – Case Study on Economic Law Vol. 9, Economic Law Case Study Association (Co-author, 2015)
• Half Price Real Estate Agent’s Commission and Antitrust Law – Competition and Law, Legal Times (2015)