The World Trade Organization (WTO) has ruled that the European Union also should revise the duties it has imposed against Hynix Semiconductor, four months after ruling that the US also violated trade regulations by instituting tariffs against the South Korean memory chipmaker, according to the Associated Press.

The WTO’s Dispute Settlement Body partially upheld South Korea’s claims against the tariffs, concluding that the EU incorrectly calculated material injuries caused to its regional chipmakers as a result of government subsidies received by Hynix, but the WTO did not give a timeline for a revision to take place. The WTO also ruled, however, that some of South Korea’s contributions to Hynix were illegal.

The US International Trade Commission imposed a 44% duty on Hynix’s DRAM chips in June 2003, a move quickly followed by a 35% duty imposed by the European Union.