Won Seok Ko is reputed as one of the leading litigators in Korea with extensive experience. He primarily practices in finance, family law & inheritance law, general corporate and administrative litigation.

Mr. Ko received his LL.B from college of law, Seoul National University in 1984, and he also studied at Judicial Research and Training Institute, Supreme Court of Korea. He was a visiting scholar from Stanford law school from 1997 to 1998. He is a member of the Korean Bar Association, and the Seoul Bar Association.

Prior to joining Lee&Ko, Mr. Ko served as a judge in various courts, including Seoul District Court Northern Branch, Seoul Civil District Court, Seoul District Court Eastern Branch, Seoul High Court. He was also the Research Judge at Supreme Court of Korea from 1999 to 2001.

In 2002, he became a professor at Judicial Research and Training Institute, Supreme Court of Korea, where he taught civil litigation.