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WT/DS402 - US - Use of Zeroing in Anti-Dumping Measures Involving Products from Korea

WTO dispute settlement case - EU as third party

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South KoreaUnited States
Trade topics
Dispute settlement
Dispute settlement
WTO - EU as third party

Summary of the case

  • Complaint by: Korea, Republic Of
  • Complaint against: United States
  • Third parties: EU, China, Japan, Mexico, Thailand, Viet Nam

This dispute concerns the alleged application by the US Department of Commerce of the practice known as "zeroing" of negative dumping margins in calculating final margins of dumping in its investigations of certain steel products from Korea. The measures at issue are the final determinations, amended final determinations, anti-dumping duty orders and amended anti-dumping duty orders imposed by the United States in relation to imports of these three products. Korea claimed that in the investigations at issue, the Department of Commerce used the "zeroing" methodology to determine the final dumping margins for the Korean exporters at issue.

Relevant WTO provision: Anti-dumping Agreement: Art. 1, 2.1, 2.4, 2.4.2, 5.8; GATT 1994: Art. VI


The panel circulated its report to the WTO Members on 18 January 2011.

  • Consultations requested: 24 November 2009
  • Panel requested: 08 April 2010
  • Panel established: 18 May 2010
  • Panel report circulated: 18 January 2011


EU submissions and other related documents

Full case details and WTO documents on the WTO website

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