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Lee & Ko

Work +82 2 772 4000
Fax +82 2 772 4001
Seoul, Seoul

Jin So

Work +82 2 2191 3357
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

  • 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).
    - Lee & Ko

Legal Developments in South Korea

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