GlobalFoundries sues Tower

GlobalFoundries filed its complaints on March 26, 2026, alleging infringement of 11 U.S. patents and naming Tower Semiconductor in two suits in the U.S. District Court for the Western District of Texas and a separate complaint at the U.S. International Trade Commission. (gf.com)) The ITC’s Section 337 process can lead to exclusion orders and cease‑and‑desist remedies, and typical investigations move from filing to final determination on a roughly 15‑ to 18‑month cycle with evidentiary hearings often scheduled 8–10 months after filing. (usitc.gov)) The federal complaint is docketed as GlobalFoundries U.S. Inc. v. Tower Semiconductor Ltd., No. 7:26‑cv‑00109, with initial filings and Rule 7 disclosures entered on March 26, 2026. (courtlistener.com)) GlobalFoundries’ press release states the company has built a portfolio of more than 8,000 patents while describing Tower’s patent holdings as “less than 500,” language GF used to argue Tower has freeridden on GF’s process technologies. (gf.com)) Market moves accompanied the filings: Tower Semiconductor shares closed down about 7.45% on March 26, 2026, while GlobalFoundries’ stock fell about 4.64% on the same trading day. (money.usnews.com)) Tower publicly rejected the allegations, citing its track record of R&D investment, two U.S. manufacturing facilities and global R&D centers, while Reuters noted both companies compete in specialty segments such as radio‑frequency chips and silicon photonics and that GF last year outlined a roughly $16 billion expansion plan for U.S. facilities. (money.usnews.com))