Logger Script
HOME > PROFESSIONALS Print

Son, Doil (Partner)

Doil Son is a partner at Yulchon practicing primarily in the areas of Mergers & Acquisitions, Technology, Media & Telecommunications (TMT), Data Privacy and Cyber Security including Trade Secret Protection as well as crisis management.

Before entering private practice, Mr. Son served as a district court judge for two years.

He has advised a number of multinational/local e-commerce business and financial institutions with regard to a wide range of issues such as cross-border payment system, mobile payment system, data privacy and cyber security, one of the most notable examples of which may be his active role in the biggest data breach case in Korean history in 2014 (when the breached data belong to more than 100 million users). He has advised clients to bring its data management system into full compliance with ever-tightening data privacy regulations in Korea. He is successfully leading Yulchon’s Data Privacy team to have more extensive experience than any other top-tier law firms in Korea, particularly with regard to establishment of data privacy compliance system. He has also represented various clients in various trade secret violation cases and consulting projects for trade secret protection system.

He has frequently lectured on cyber security and data privacy issues in various conferences held by the International Bar Association, Inter-Pacific Bar Association and TechLaw Group as well as International Organization for Standardization.

He has also advised domestic and international clients for mergers and acquisition transactions including eBay’s USD 1.2 billion acquisition of Gmarket (Korea’s leading e-commerce company) and Dongwon’s acquisition of Starkist at USD 300 million as well as various cross-border M&As. He recently advised Doosan Infracore Bobcat Holdings for its sale of French subsidiary (Montabert) to Joy Global (U.S. listed company) at approximately 110 million euros. He advised Kuraray for its acquisition of Glass Laminating Solutions from Dupont in USD 540 Million in relation to the business and factory in Korea as well. He has especially advised on various transactions (investment/acquisition/licensing/joint venture) relating to technology companies and media industry.

Mr. Son has a B.A. in political science from the Seoul National University and an L.L.M. from UCLA School of Law (2002). He joined Yulchon as a partner in 2012, after serving as a judge at Kwangju District Court for two years since 1996 and working at Shin & Kim, Arter & Hadden, and Hwang Mok Park P.C.

Mr. Son has established his international network by serving as the Vice President for International Relations of the Korean Bar Association and Advisor to Ministry of Justice for International Law until February 2013, and currently serving as the Publication Officer of Technology Law Committee of the International Bar Association. He also served as a Vice-Chair of the Environmental Law Committee of the Inter-Pacific Bar Association by 2016.

Mr. Son’s 2011 book Sovereign Wealth War illustrates the dynamics of various sovereign wealth funds which are now the key sources of global funding.

Mergers & Acquisitions, Technology, Media & Telecommunications, Data Privacy, Cyber Security and Crisis Management

University of California, Los Angeles (UCLA), Law School, LL.M. (2002)
Judicial Research and Training Institute, the Supreme Court of Korea (1996)
Seoul National University, Political Science, B.A. (1994)

Yulchon LLC (2012-present)
Technology Committee Publication Officer,  International Bar Association (2017-present)
Expert on de-identification of personal information in the financial sector, Korea Credit Information Services (2016-present)
Member of ISMS Committee, Financial Security Institute (2015-present)
Board Member, TechLaw Group (2015-present)
Member, International Committee of the Korean Bar Association (2015-present)
Member, Committee for Foreign Legal Consultant System of the Korean Bar Association (2014-present)
Vice Chair of Environmental Law Committee, Inter-Pacific Bar Association (2012-present)
Technology Committee Officer (Intrusive Technology Subcommittee Chair),  International Bar Association (2015-2016)
Member, Disciplinary committee for Foreign Legal Consultant (Ministry of Justice) (2014-2016)
Advisor, Korea Internet & Security Agency on protection of critical information and communication infrastructure (2013-2014)
Member, International Relations Committee of the Korean Bar Association (2011-2015)
Advisor, Ministry of Justice for International Law (2011-2013)
Vice President (international), Korean Bar Association (2011-2013)
Partner, Hwang Mok Park P.C. (2007–2012)
Founder, Seoul Law Group (2004-2006)
Foreign Legal Consultant, Arter & Hadden (CA, USA) (2002-2003)
Attorney, Shin & Kim (1997-2003)
Judge, Kwangju District Court (1996-1997)

[Data Privacy, Cyber Security and E-Commerce]
Advising one of the major telecommunication carriers for its outsourcing system consulting project (2017)
Advising local e-commerce company in relation to its data breach case [reported in the newspaper] (2017)
Advising financial institution in relation to its data breach case [reported in the newspaper] (2017)
Advising one of the biggest Korean e-commerce companies in relation to its response to Korean government’s investigation and its restricting of IT system (2016)
Advising one of the biggest Korean credit card company for its online & offline payment system and FDS system (2016)
Advising Korean pharmaceutical company for its data privacy system consulting (2016)
Advising Korean duty-free sale company for its data privacy system consulting (2016)
Advising various foreign clients for data transfer, cyber security and cloud computing (2014-2016)
Advising one of the largest business conglomerates for its group-level data privacy planning (2015)
Advising KB Kookmin Card for data breach (more than 50 million persons, 2014)
Advising NH Nonghyup Card for data breach (more than 20 million persons, 2014)
Advising the biggest Korean PR agency in its acquisition of location data license (2014)
Advising e-commerce corporations regarding compliance with the Electronic Financial Transaction Act and the Credit Information Act (2014)
Advising financial institutions and multi-national companies for data privacy and cyber security issues with focus on cloud computing, outsourcing of IT Process and data transferability (2013-2015)
Advising foreign e-commerce corporation with offshore server regarding the Electronic Commerce Law and the Personal Information Protection Act (2013- 2015)
Advising Korea Internet & Security Agency for cyber security audit program (2013)
Advising Korea Communications Commission for TMT issues (2013)
Advising on trade secret related disputes between global consulting companies (2013)
Advising a foreign e-commerce enterprise regarding sales of chips with payment function in Korea (2013)
Advising a British education organization regarding compliance with the Electronic Commerce Law and the Personal Information Protection Act (2013)
Advising a foreign fashion seller regarding an e-commerce business (2012)
Representing various multinational clients before the Fair Trade Commission and Consumer Protection Board (2007-present)

[M&A and Corporate Matters including Crisis Management]
Advising Korean clients in its acquisition of an undisclosed business in Russia (2016)
Advising Korean clients in its acquisition of a hotel in Guam (2016)
Advising foreign clients in its acquisition of Korean company focusing on data acquisition (2016)
Advising foreign e-commerce clients in relation to government investigation (e-commerce, privacy, anti-trust and consumer protection) (2015 ~ 2016)
Advising Korean clients in its hostile take-over and crisis management (2016)
Advising foreign defense industry clients in its negotiation with Korean government
Advising Korean clients in its sale of offshore subsidiaries in France (2014-2015)
Advising global media clients in its restructuring of Korean business structure (2014-2015)
Advising Kuraray for its acquisition of Glass Laminating Solutions from Dupont in USD 540 Million in relation to the business and factory in Korea (2014)
Advising international clients in its acquisition of Korean Hi-tech companies (2013-2015)
Advising international clients for their acquisition of casino and hotels (2012–2015)

  • Self-Driving Cars : New standard for data privacy internationally and in Korea, Communications Law (June 2016) pdf
  • Sovereign Wealth War, Maeil Economic Daily (2011)
  • Strategic Investments and Alliances in the United States, Arter & Hadden (2003)
  • Labor Issues in Mergers and Acquisitions of Bankrupt Companies, University of California, Los Angeles (UCLA) Law school LL.M. Paper (2002)

The exclusive winner for General Corporate sector in South Korea in the Client Choice Awards 2016, International Law Office(ILO) (2016)
    Korean, English
    Republic of Korea (1996)