• Litigated voluntary uninsured payment related case before a plenary session of the Supreme Court, resulting in overturning an existing precedent. 
• Litigated against Korea Fair Trade Commission’s sanctions imposed for selective medical service fees.
• Litigated Korea’s first ever case to vacate government’s notification on reductions to insurance reimbursement drug pricing.
• Litigated case to vacate reduction to drug pricing under actual transaction pricing system. 
• Litigated Korea’s first ever case to vacate change to insurance reimbursement standard.
• Litigated case to vacate reduction to ceiling amount for medical devices.
• Litigated case to vacate revocation of drug price under raw material synthesis exception.
• Litigated case to vacate reduction to drug price under drug price re-evaluation system.
• Litigated case to vacate reduction to drug price under adjustment application system.
• Litigated case involving product transfer.
• Litigated patent case involving selection invention.
• Litigated in defense of pharmaceutical product liability claim. 
• Litigated in defense of seeds product liability claim.
• Litigated case to vacate administrative sanction for labeling and advertising violations. 

• Advised clients during Korea Fair Trade Commission’s first, second and third rounds of investigations into the pharmaceutical industry for unfair trade practices.
• Advised clients during Korea Fair Trade Commission’s investigations into patent abuse.
• Advised clients during illegal rebate investigations under the dual punishment system.
• Advised on establishing a global compliance standard of practice for multinational pharmaceutical companies.
• Advised on new medical technology evaluations of medical devices.
• Advised on new drug listings.
• Advised on regulatory matters in connection to M&As.
• Advised on execution of licensing and distribution agreements.
• Advised on termination of co-promotional and distribution agreements.
• Advised clients on responses and defenses against administrative measures for violations of the Pharmaceutical Affairs Law and Medical Device Act.
• Advised on resolving product liability disputes involving pharmaceuticals, medical devices, foods and cosmetic products.
• Advised clients on responses and defenses against the reduction of ceiling reimbursement price under medical device cost investigation.
• Advised on side effects in connection to clinical trials.
• Advised on foreign substances in products.
• Advised on responding to antagonistic consumers.

• Litigated Article 188(4) of the Securities Exchange Act, leading to adjudication of unconstitutionality of provision. 
• Litigated in defense of claim for damages in connection to the delay of the System Integration Project. 
• Litigated and established a Supreme Court precedent in connection to Article 65(2) of the Urban & Residential Environment Improvement Act.  
• Litigated and established a Supreme Court precedent in connection to Article 29(2) of the Industrial Safety & Health Act.

Publications/Activities

• Lexology Getting the Deal Through - Environment 2022: Korea Chapter (Co-author, Law Business Research, 2021) 
• Lexology Getting the Deal Through - Climate Regulation 2022: Korea Chapter (Co-author, Law Business Research, 2021) 
• International Comparative Legal Guide to Environmental, Social & Governance 2022: Korea Chapter (Co-author, Global Legal Group, 2021)
• Global Legal Insights – Pricing & Reimbursement 2019: Korea chapter (Co-author, Global Legal Group, 2019) 
• Getting the Deal Through – Pharmaceutical Antitrust: Korea chapter (Co-author, Law Business Research, 2018) 
• The Scope of Copyright Protection for Computer Programs (LL.M. Thesis, 1998.5.)