YOON&YANG

• Commercial ∙ Management Rights Disputes
• Financial ∙ Capital Market Disputes
• Family Law
• Wealth Management Center

• 2008-present Yoon & Yang LLC
• 2026-present Advisory Member, COS Inc.
• 2015 Intern, District Court in Monroe County

• 2018 Korea University Advanced Management Program
• 2015 Indiana University Maurer School of Law, LL.M.
• 2008 Judicial Research and Training Institute
• 2006 Korea University College of Law, LL.B.

[Commercial & Management Rights Disputes]

• Handled and prevailed in litigation involving claims for confirmation of non-existence of obligations (principal claim) and restitution of unjust enrichment (counterclaim) between KSports and eight major domestic business groups (including 20 affiliates) (final judgment rendered in favor of KSports) (2022–2024)
• Handled and prevailed in the litigation seeking restitution of unjust enrichment between KSports and KT (judgment finalized, 2019~2022)

[Family Law & Wealth Management]

• Handled the litigation seeking nullification of marriage in cases where couples broke off their engagements after filing for registration of marriage but before holding wedding ceremonies (12 favorable judgments rendered)
• Handled cases involving divorce and division of property for high-net-worth individuals, as well as related civil litigation (including title trust cases), securing multiple favorable judgments
• Handled several cases involving claims for determination of contribution shares and division of inherited property among heirs of major domestic business groups
• Handled the litigation seeking recovery of inheritance between inheritees of a business group
• Handled multiple litigations seeking restitution of forced share between inheritees 
• Handled cases involving claims for restoration and damages arising from marital breakdowns occurring shortly after marriage, among others

[Financial · Capital Market Disputes]

• Advised and handled matters related to the voluntary mediation of a financial institution in connection with LIME Fund, Simone Fund, Platform Fund, and GENTU Fund

[Others]

• Case involving a Korean oriental medicine doctor’s violation of the Medical Service Act related to the use of sonogram: Supreme Court’s judgment vacating and remanding the case to the lower court (acquittal rendered in December 2022), followed by a final acquittal in the retrial proceedings after remand
• Litigation seeking revocation of the disposition suspending business imposed on a Korean oriental medicine doctor for the use of an electroencephalograph: Prevailed in the second-instance proceedings, with the Supreme Court’s judgment in favor of the client finalized (July 2023)
• Case involving a Korean oriental medicine doctor’s violation of the Medical Service Act on use of a bone density measuring device: Acquitted at all three levels of court (first instance, appellate court, and Supreme Court)
• Handled a case involving a Korean oriental medicine doctor’s violation of the Medical Service Act related to the use of lidocaine