Mr. Dae Hae YOON is a partner at D&A LLC. His practice is primarily focused on the Defense Industry, Public Contracts, General Civil Disputes, Criminal Defense Litigation, Administrative Procedure & Litigation, and National Defense.

In particular, following his work experience at the Defense Acquisition Program Administration and a defense contractor in 2020, he specializes in the defense industry and public contracting, while also handling litigation and providing advisory services across diverse practice areas, including civil, criminal, administrative, and national defense cases.

Bar Admissions

• Admitted to Bar. Korea (2001)

Education

• Yeungnam University (LLM in Law, 1994)
• Yeungnam University (LLB in Law, 1991)
• Dalseong High School (1987)

Significant Accomplishments

• D&A LLC (2025-Present)
• Attorney, Legal Affairs Team, Korea Aerospace Industries, Ltd. (2023)
• D&A LLC (2020)
• Legal Litigation Division, Defense Acquisition Program Administration (2017)
• Chief Judge, Judicial Research Department, High Court for Armed Forces, Ministry of National Defense (2016)
• Chief, National Defense Legal Affairs Team, Ministry of National Defense (2015)
• Chief Judge, Military Court, Republic of Korea Air Force (2014)
• Chief, Legal Affairs Division, Republic of Korea Air Force (2012)
• Chief Prosecutor, High Prosecutors’ Office, Republic of Korea Air Force (2011)
• Chief, Legal Affairs Office, Operational Command, Republic of Korea Air Force (2009)
• Senior Military Judge, High Court for Armed Forces, Ministry of National Defense (2007)
• Departmental Chief Judge, Military Court, Republic of Korea Air Force (2006)
• Legal Affairs Division, Republic of Korea Air Force (2005)
• Legislative Division, Republic of Korea Air Force (2004)
• General Counsel Bureau, Ministry of National Defense (2003)
• Judicial Office, ROK Joint Chiefs of Staff (2001)
• Judicial Research and Training Institute of the Supreme Court of Korea (2001)
• Top Scorer, Military Judge Advocate Examination (1998)

Professional Activities and Experience

• Represented Samsung C&T in litigation on cost sharing lawsuit with regard to the Seoul Subway Line 9 Third Stage 919 area construction
• Represented Seocho-Gu Office and three other Gu offices in litigation on sanitation workers’ wage issue
• Represented Samsung C&T in litigation on Mapo Raemian-Purugio related defects (general defects)
• Represented Samsung C&T in litigation on Kimpo Punggyeong-Maeul Raemian Hangan 2nd Apt. related defects (general defects/fire doors)
• Represented Gwangmyeong SK Techno Park in litigation on defects (general defects/fire doors)
• Represented Samsung C&T in litigation on indirect cost of World Cup Bridge
• Represented Samsung C&T in litigation on indirect cost of Dongdaemun Design Plaza
• Advised KMACA(Korea Mutual Aid Cooperative Association) on amendment of its articles of incorporation

• Analysis of Key Case Law by Field for 2022: Military Law (Legal Newspaper, 2023)
• Understanding Public Contracts Through Case Law by Issue (2021)
• A Study on Civil Legal Relations After Unification (Master’s Thesis, 2020)