The U.S. International Trade Commission instituted Investigation No. 337-TA-1500 on April 27, 2026, targeting certain semiconductor devices, products containing them, and their components. GlobalFoundries U.S. Inc., headquartered in Malta, New York, filed the underlying complaint on March 26, 2026, alleging patent infringement under Section 337 of the Tariff Act of 1930 (19 U.S.C. 1337).

The investigation covers six patents: U.S. Patent Nos. 8,330,235; 8,507,983; 9,093,425; 9,865,546; 10,062,748; and 10,707,167. GlobalFoundries seeks a limited exclusion order and cease and desist orders against the named respondents—Tower Semiconductor Ltd. of Israel and Tower Partners Semiconductor Co., Ltd. of Japan. The Commission's authority derives from 19 U.S.C. 1337 and 19 CFR 210.10.

The scope of accused products is explicitly defined in the Federal Register notice: "certain semiconductor devices manufactured using Tower's RF, power management, BCD, logic, SiGe, and BiCMOS processes, including wafers and chips, and components thereof." This plain-language description establishes the boundaries of the investigation and signals which imports may face exclusion if GlobalFoundries prevails.

Specific Claims at Issue: The investigation examines claims 1, 5-12, and 15-19 of the '235 patent; claims 1-7, 13-18, and 20 of the '983 patent; claims 1-9 of the '425 patent; claims 1-14 of the '546 patent; claims 1-12, 14, and 16-18 of the '748 patent; and claims 1-6 of the '167 patent.

For compliance engineering teams, the operational risk centers on downstream products. Semiconductor devices manufactured by Tower using the named processes appear in consumer electronics, automotive systems, power management modules, and RF components. If the ITC issues a limited exclusion order, U.S. Customs and Border Protection would block entry of covered articles at the border—regardless of whether the importer is a named respondent or a third party using Tower-fabricated chips.

Classification Complexity: Products containing accused semiconductor components may enter under multiple HTS headings (e.g., 8541 for diodes and transistors, 8542 for integrated circuits). Importers must verify whether their specific components fall within the investigation's scope, which hinges on manufacturing process rather than tariff classification alone.

The complaint supplement filed April 1, 2026, indicates GlobalFoundries has refined its allegations, likely adding technical detail or additional accused products. Trade compliance systems that rely on static HTS data may miss the distinction: two products classified identically under 8542.31 could have different exclusion order exposure based on fabrication origin.

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Section 337 investigations typically take 12-18 months to reach a final determination. During this period, the Commission will evaluate whether GlobalFoundries maintains a domestic industry as required by 19 U.S.C. 1337(a)(2) and whether the accused imports infringe the asserted patent claims. Respondents Tower Semiconductor Ltd. and Tower Partners Semiconductor Co., Ltd. will have the opportunity to contest validity, infringement, and domestic industry findings.

Importers sourcing from Tower's facilities in Israel and Japan—or purchasing finished products containing Tower-manufactured semiconductors—should audit their supply chains now. The investigation number 337-TA-1500 will serve as the reference for any future exclusion orders, making it a critical data point for automated compliance systems tracking import restrictions.