Yoon Sun Kim Senior Foreign Attorney
김윤선 외국변호사.jpg
  • TEL 82 2 6182 8541
  • FAX 82 2 6003 7806
  • E-MAIL
Yoon Sun Kim is a Partner (Senior Foreign Attorney) at Yoon & Yang LLC and her main practice areas are healthcare, corporate/M&A, and intellectual property rights.

She obtained her B.A. (with Distinction and Phi Beta Kappa) and M.A. from Stanford University, and obtained her J.D. from University of Pennsylvania Law School.

Ms. Kim provides extensive legal advice for a diverse clientele base encompassing global cleantech, pharmaceutical and medical device companies. She also participates in numerous matters related to trade secrets and Unfair Competition Prevention and Trade Secret Protection Act.


  • 2015-present Yoon & Yang LLC


  • 2015 University of Pennsylvania Law School, J.D.
  • 2014 University of Pennsylvania Wharton School, Certificate in Management
  • 2011 Stanford University, M.A.
  • 2010 Stanford University, B.A.

Representative Matters


  • Advised and represented a multinational company on domestic regulations
  • Advised and represented a multinational medical waste disposal company on domestic regulations
  • Advised and represented a multinational sports company on
  • Advised a major domestic pharmaceutical company on the acquisition of a Europe-based pharmaceutical company
  • Advised a major multinational pharmaceutical company on a global M&A of a specific pharmaceutical business unit
  • Advised a multinational food company on the launching of an ice cream business
  • Advised CGBio on license-out agreement
  • Advised Medicox on license agreement
  • Advised foreign medical device manufacturers, including ERBE on import approvals and management of distributors
  • Advised Sanofi Aventis regarding Improper Solicitation and Graft Act

[Corporate/ IP/ Energy]

  • Advised multinational companies on JV transactions
  • Advised major domestic sports company on JV transaction
  • Advised KT/BC Card on JV establishment and distribution agreement in Kyrgyzstan
  • Advised various domestic/multinational companies on distribution agreement
  • Advised SPC Group on overseas business expansion
  • Advised major domestic franchise company on entering the Indonesian market
  • Advised Nestle, Heineken, etc. on personal information protection related matters and GDPR issues
  • Advised multinational companies on IP license agreements
  • Advised Microsoft Korea on response to KFTC investigation
  • Advised Qualcomm in the KFTC’s investigation of the company’s alleged abuse of market dominance
  • Advised domestic companies on offshore wind power projects
  • Advised Aquila Capital on fund investment for solar power project



  • Women in Business Law Awards 2023 APAC Finalist (Litigation)


  • Korea Chapter, Trade Marks & Copyright, Chambers Global Practice Guides, Chambers and Partners (Co-author, 2024)
  • Korea Chapter, Trade Secrets, Chambers Global Practice Guides, Chambers and Partners (Co-author, 2020-2023)