Jeonghwan Kim's practice covers a wide range of matters related to responses to investigations and inquiries by various regulatory agencies, including the prosecution and police, criminal trials, corporate compliance, and internal investigations. Mr. Kim is a prominent criminal defense attorney, particularly in the areas of antitrust and competition, securities and finance, serious accidents, and bio and healthcare, and has successfully handled a number of corporation-related cases.

Mr. Kim has extensive experience of investigating into corporate cases and economic crimes as he was primarily responsible for special cases and engaged in a number of investigation teams of conglomerates and major economic events while working as a prosecutor for 15 years. In particular, he has accumulated expertise by investigating major cases involving major companies' anti-trust and competition, unfair support, supporting subsidiaries with volumes of trade, and price-fixing and cases involving serious accidents, safety of citizens, and bio and healthcare while serving as a deputy senior prosecutor of the Anti-trust and Competition Investigation Department and Food and Drug Crime Department in the Seoul Central District Prosecutors' Office, as a prosecutor of the Special Investigation Department in the Seoul Central District Prosecutors' Office, and as a prosecutor in the Special Investigation Office.