GlobalFoundries sues Tower Semiconductor
GlobalFoundries has filed a U.S. patent lawsuit against Tower Semiconductor, escalating a legal fight that could block imports of key analog and specialty chips into the U.S. — a development that may ripple through Bay Area design houses dependent on those parts. (ico-optics.org)
The complaints were filed on March 26, 2026 in the U.S. International Trade Commission and the U.S. District Court for the Western District of Texas. (gf.com)) GlobalFoundries’ filings assert infringement of 11 U.S. patents that protect high‑performance manufacturing technologies and seek both injunctive relief and compensation for lost profits. (gf.com)) GlobalFoundries told investors it has built a patent portfolio of more than 8,000 patents while Tower holds fewer than 500 patents, and GF pointed to its June 2025 commitment of up to $16 billion in additional U.S. fab investments with roughly $3 billion earmarked for R&D. (gf.com)) Tower Semiconductor said it “firmly rejects the allegations” and will “vigorously defend” its intellectual property, noting its long‑standing R&D investments and U.S. manufacturing footprint. (money.usnews.com)) The federal docket lists the case as GlobalFoundries U.S. Inc. v. Tower Semiconductor Ltd., No. 7:26‑cv‑00109, with the complaint and patent filing forms entered on March 26, 2026. (courtlistener.com)) Market reaction on March 26 showed Tower Semiconductor shares closed down roughly 7.45% while GlobalFoundries shares fell about 4.64% versus a broader Nasdaq decline that day. (money.usnews.com)) Both companies operate in mature‑node specialty segments—Tower as a foundry for high‑value analog, RF and silicon‑photonics products and GF as a broader specialty foundry—sectors explicitly referenced in the filings as tied to mobile, automotive and communications infrastructure applications. (towersemi.com))
