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United States/Semiconductors/NYSE:TSM US Patent Fight Puts TSMC Valuation And US Chip Supply In Focus June 13, 2026 Simply Wall St Reviewed by Bailey Pemberton Share Copy Link US congressional Republicans are urging the International Trade Commission to enforce US patent rights in a case involving Taiwan Semiconductor Manufacturing (NYSE:TSM). The dispute focuses on allegations that TSMC chips inf

TSMC has been drawn into a patent infringement complaint in the US by Ireland-based patent licensing firms Longitude Licensing and Marlin Semiconductor. The companies have claimed that the US government could block imports to the US of chips made by TSMC as a result of the case, and have enlisted several members of Congress to support their position, drawing market attention.