The World Trade Organization issued a final report Thursday rejecting Japan's claim that U.S. antidumping duties on corrosion-resistant carbon steel flat products violate WTO rules.

It is Japan's first loss in a series of disputes over U.S. antidumping duties. The report was drafted by a WTO dispute-settlement panel.

In May, the WTO dispute-settlement panel formally ruled in favor of the United States regarding Japan's claims in the case.

Japan plans to appeal the case to a higher-level WTO committee, although the committee in many cases upholds the rulings of dispute-settlement panels.