Jeongju Jahng

Customs ∙ International Trade

Foreign Investment

FTA ∙ Trade Advisory

Information Security Center

Compliance

ESG Center

Intellectual Property

International Arbitration ∙ Litigation

Administrative Disputes

Constitutional Litigation

Europe

GRC Center

Jeongju Jahng is a partner at Yoon & Yang LLC, and his main practice areas are customs, international trade, foreign investment, and intellectual property.

Mr. Jahng worked as a deputy director at the FTA Trade Rules Division, International Legal Affairs Division, Overseas Voting Team, and Trade Dispute Settlement Division of the Ministry of Foreign Affairs and Trade. From 2013 he served as a deputy director of the Trade Dispute Settlement Division and the FTA Goods Division of the Ministry of Trade, Industry and Energy and retired after working in the Trade Dispute Settlement Division. Based on these experiences, he provides legal services on resolving the various legal issues faced by domestic and foreign companies, and also provides advice to the Ministry of Trade, Industry and Energy, the Ministry of Foreign Affairs, the Ministry of Environment, and the Ministry of Land, Infrastructure and Transport.

Admitted to bar, Korea (2007)

Korea Chapter, The International Trade Law Review, Law Business Research (Co-author, 2022-2023)

[Response to government regulations of major countries]

Advised on US laws (Inflation Reduction Act (IRA), CHIPS Act and Uyghur Forced Labor Prevention Act) and EU laws & regulations (Foreign Subsidies Regulation, Carbon Border Adjustment Mechanism (CBAM), Supply Chain Due Diligence Act, Critical Raw Materials Act, Eco Design Regulations, Packaging Waste Directive, and Amended Rules for Waste Shipment)

Represented a Brazilian company in the Korea Trade Commission’s anti-dumping investigation of Indonesian/Brazilian-made uncoated paper

[Free Trade Agreement (FTA)]

Represented the Korean government in the investor-state dispute settlement (ISDS) that a US citizen filed related to land expropriation based on the Korea-US FTA

Advised on various matters related to FTA negotiations (i.e., amendment of Korea-US FTA and RCEP) and previously executed FTAs by Korea

[World Trade Organization (WTO) Conventions]

Advised on various WTO conventions, such as GATT, Anti-dumping Agreement, Subsidy Agreement, and Government Procurement Agreement

Advised on case involving US anti-dumping measure against Korean-made oil well steel pipes

Advised on case involving US anti-dumping and countervailing duties against Korean-made washing machines

Advised on case involving US technical barriers to trade of tuna products from Mexico

Advised on case involving US technical barriers to trade of beef from Canada and Mexico

Advised on case involving US import regulation of Indonesian-made cigarette products

2018-present Yoon & Yang LLC

2018 Deputy Director, Trade Dispute Settlement Division, Ministry of Trade, Industry and Energy

2016-18 Deputy Director, Trade Dispute Settlement Division, Ministry of Trade, Industry and Energy

2015-16 Deputy Director, FTA Goods Division, Ministry of Trade, Industry and Energy

2013-15 Deputy Director, Trade Dispute Settlement Division, Ministry of Trade, Industry and Energy

2012-13 Deputy Director, Trade Distpute Settlement Division, Ministry of Foreign Affairs and Trade

2011-12 Deputy Director, Overseas Voting Team, Ministry of Foreign Affairs and Trade

2008-11 Deputy Director, International Legal Affairs Division, Ministry of Foreign Affairs and Trade

2007-08 Deputy Director, FTA Trade Rules Division, Ministry of Foreign Affairs and Trade

Judicial Training & Research Institute

2007

Korea University, B.A. in Spanish Language and Literature (Minor: Law)

B.A.

2001

Leading Individual, International Trade

Chambers and Partners Asia-Pacific

2025