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Jin So

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Lee & Ko

Work Department

Litigation Group.




Lee & Ko: 2012 – Present Attorney: 2010 Seoul District Prosecutor’s Office : 2009 Jeonju District Prosecutors’ Office: 2008 NIS Law Aide: 2004 Central Investigation Division at the Attorney General's Office, Prosecutor: 2002 Seoul Northern District Court, Prosecutor: 1994-2001.


Korean and English.


Korean Bar Association; Seoul Bar Association.


Washington Law School – Visiting Scholar 2007 Judicial Research & Training Institute: 1994, Seoul National University – B.A. in Department of Law: 1992.

South Korea: Labour and employment

Labour and employment – Local firms

Within: Leading individuals

Chang-Soo Jin - Lee & Ko

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South Korea: Regulatory: compliance and investigations

Regulatory: compliance and investigations – Local firms

Within: Regulatory: compliance and investigations – Local firms

As ‘one of the top law firms’, Lee & Ko attracts praise for its wide-ranging expertise in compliance and white-collar criminal investigations, as well as for its ‘immediate and value-added advice’. The practice also maintains a digital forensic team, ensuring client confidentiality and a quick turnaround of results – an aspect very much valued by its clients. Taek Rim Oh is ‘one of the best cross-border attorneys in Korea’, according to one client. Tae-Ki Ghil, Chan-Youp Song, Jae-Deog Bae and Joon Kim advised McDonald's in relation to criminal complaints filed by consumers claiming to have contracted hemolytic-uremic syndrome from hamburgers. Yong-Seok Park, Song and Tae Yop Lee are defending Samsung Display against a criminal complaint brought by LG Display over alleged trade secret misappropriation. Other names to note are Jin So, Sedong Min, Yeonsoo Yun and Yuseok Kim.

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Legal Developments by:
Lee & Ko

Legal Developments in South Korea

Legal Developments and updates from the leading lawyers in each jurisdiction. To contribute, send an email request to
  • Greater Reforms for Promoting Work-Life Balance – Changes to the Gender Equal Employment....

    Greater Reforms for Promoting Work-Life Balance – Changes to the Gender Equal Employment and Work-Life Balance Support Act
  • Lee & Ko successfully represents Big Hit Entertainment against unauthorized use of BTS’ photos

    Lee & Ko, on behalf of Big Hit Entertainment (“Big Hit”), obtained the first-ever decision in Korea to recognize the entertainment companies’ right to independently request for injunction against those who free-ride on the customer attractiveness that is based off of popularity and fame of the artists managed by the companies. This landmark decision is expected to serve as an important pedestal in protecting the legitimate interest of entertainment companies (domestic as well as international) that manage famous artists and entertainers and remain vulnerable to unfair competition of free-riders.
  • First- Ever Decision by the Supreme Court of Korea ...

    First- Ever Decision by the Supreme Court of Korea to Find Copyright Infringement in the Selection, Arrangement or Combination of Game Elements
  • Key International Tax Law Amendments in the Draft 2019 Tax Revision Bill

    On July 25, 2019, the Ministry of Economy and Finance publicly released the 2019 draft Tax Revision Bill (the “Draft Bill”). The Draft Bill is expected to be sent to the National Assembly on September 3, 2019 for deliberation and adoption.
  • Russian Court’s Judgment Recognized for Enforcement in Korea

    Recently, based on the premise that requirements for “mutual guarantee” or “reciprocity” in relation to the recognition and enforcement of foreign judgments can be allowed between Russia and Korea, a District Court of Korea rendered its decision which allowed a judgment concluded by a Russian court to be enforceable in Korea (see Changwon District Court, Decision 2018Gahap51099 held on January 17, 2019).
  • Korean National Assembly Passes “Blind Hiring” Bill to Reform Hiring Culture

    Recently, the National Assembly of Korea passed legislative amendments to the Fair Recruitment Procedure Act (“FRPA ”) as part of the reform efforts to address the country’s recruitment culture. The latest amendment – dubbed the “blind hiring” bill – expands the FRPA to prohibit any type of recruitment irregularities (e.g., improper solicitation, coercion, pressure) and, more importantly, bars employers from asking jobseekers to provide any information unrelated to the position and the applicant’s merit. The amended FRPA will go into effect starting July 17, 2019.
  • Korean Financial Supervisory Service Mandating Disclosure of Transaction Documents When Filing Repor

    Korean Financial Supervisory Service Mandating Disclosure of Transaction Documents When Filing Report on Material Facts
  • Successful Challenges to Korean Health Insurance Regulator’s 13-Year Old System...

    Successful Challenges to Korean Health Insurance Regulator’s 13-Year Old System of Automatic Reduction of Original Drug Price
  • Korean Supreme Court Confirms Licensee’s Standing to Challenge Patent Validity

    On February 21, 2019, the Supreme Court of Korea issued an en banc decision overruling its prior precedents on the issue of whether a licensee who is continuing to make royalty payments under an existing license agreement nevertheless has standing to challenge the validity of the licensed patent. In short, the Korean Supreme Court held that absent special circumstance, a patent licensee is an “interested party” eligible for challenging the validity of a licensed patent, despite the lack of any threat or potential threat posed by the patent holder against the licensee’s right to use the patented invention. (Supreme Court En Banc Decision No. 2017Hu2819).
  • Amendments to the KFTC Merger Review Guidelines

    The Korea Fair Trade Commission (the “KFTC ”) recently amended its Guidelines for Merger Review (the ”Guidelines ”), which took effect from February 27, 2019. The Guidelines now provide for particular issues relating to “innovation markets” and “big data” that will be considered during the KFTC’s review of mergers within R&D-intensive (i.e. innovative) industries.