Since his initial appointment as a judge in 2001 and until retiring from the court system after serving his final post as presiding judge of a civil division of Busan High Court in February 2022, Attorney Kim Jae-Hyeong served as a judge for 22 years, during which he dealt with various type of civil, administrative and criminal cases. When serving as a research judge of the Supreme Court of Korea from 2010 to 2012, Mr. Kim conducted studies and prepared reports on a number of civil, administrative (antitrust and competition, taxation) and from 2008 to 2010 and from 2013 to 2022, he dealt with numerous civil, administrative (antitrust and competition, taxation) and criminal cases in various position within Seoul High Court and Busan High Court.
From 2013 to 2018, Mr. Kim also served as a member of the Terms and Conditions Deliberations Advisory Committee of the Korea Fair Trade Commission.
He joined Barun Law in March 2022 and he mainly deals with cases concerned with finance, commercial, intellectual property, environment, general civil, administrative (antitrust and competition, taxation, general administrative matters), and white collar crime matters and he is known to be one of the best litigation lawyers in Korea.

Financial Litigation, Commercial and Corporate Litigation

- Conducted several studies and prepared reports on civil and commercial cases as research judge of the Supreme Court of Korea

- Dealt with numerous cases on finance, commercial, environment, intellectual property rights, medical, and general civil matters as a judge in various position within Seoul High Court and Busan High Court

- Represented in a lawsuit in 2023 concerned with payment upon termination with respect to development of Gyeongnam Masan Robot Land valued at KRW 100 billion (Mr. Kim won the case)

Antitrust/Competition, Administrative and Tax Matters

- Conducted several studies and prepared reports on a number of antitrust and competition, taxation, general administrative cases, including cases concerning price collusion on synthetic resin, giro commission fee and ready-mixed concrete as research judge of the Supreme Court of Korea

- Dealt with numerous administrative cases, including the case brought before Seoul High Court on cancellation of disposition imposing transfer income tax on Lone Star Fund

White Collar Crime, Election and General Criminal Matters

- Conducted several studies and prepared reports on a number of criminal cases as research judge of the Supreme Court of Korea

- Dealt with numerous cases on breach of the Public Official Election Act or the Political Funds Act, including the case on breach of the Public Official Election Act by National Assembly members brought before Seoul high Court

- Dealt with numerous cases on breach of the Act on Aggravated Punishment of Specific Economic Crimes (fraud, embezzlement, breach of trust), including the case on occupational breach of trust by a chairman of a large company brought before Seoul High Court

Publications

- A study on incontestable administrative acts as remedies for rights and interests, Korea University, 1994

- Retroactive application of personal data disclosure and notification order system to sexual offenders who have committed sexual crime against adult victims, 2015