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GlobalFoundries files patent infringement lawsuits against Tower Semiconductor

Published by Global Banking & Finance Review

Posted on March 26, 2026

2 min read

· Last updated: April 1, 2026

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GlobalFoundries files patent infringement lawsuits against Tower Semiconductor
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SAN FRANCISCO, March 26 (Reuters) - GlobalFoundries on Thursday said it has sued Israel-based rival Tower Semiconductor, alleging that Tower Semiconductor infringed on 11 GlobalFoundries patents that

GlobalFoundries files patent infringement lawsuits against Tower Semiconductor

Overview of the Patent Dispute

By Stephen Nellis

Details of the Lawsuit

SAN FRANCISCO, March 26 (Reuters) - GlobalFoundries said on Thursday it has sued Israel-based rival Tower Semiconductor, alleging that Tower Semiconductor infringed on 11 GlobalFoundries patents that relate to manufacturing chips that go into smartphones and other electronic devices.

Legal Actions Taken

GlobalFoundries said it has filed two complaints in the U.S. District Court for the Western District of Texas and one with the U.S. International Trade Commission. The Malta, New York-based semiconductor manufacturer said the ITC case will seek to block the import into the U.S. of chips made by Tower Semiconductor that were made with technologies covered by the patents in the case.

Tower Semiconductor's Response

Tower Semiconductor said in a statement that it "firmly rejects the allegations made by GlobalFoundries and will vigorously defend its intellectual property and technology leadership."

Commitment to R&D

"The company has a long-standing track record of substantial R&D investment in both the United States and globally, supported by two U.S. manufacturing facilities and leading-edge R&D centers," Tower said.

Market Impact

Stock Performance

Tower Semiconductor shares closed down 7.45% on Thursday, and GlobalFoundries shares fell 4.64%, both larger drops than broader market indices such as the Nasdaq Composite Index, which closed down 2.38%.

Industry Context

Specialty Chipmakers

While large chip manufacturers such as Taiwan Semiconductor Manufacturing Co and Intel focus on making the fastest and smallest computing chips, GlobalFoundries and Tower Semiconductor are specialty chipmakers that focus on niches such as radio-frequency chips and silicon photonics.

GlobalFoundries' Expansion Plans

GlobalFoundries last year said it planned to spend $16 billion to expand its facilities in Vermont and New York, with a focus on research and development.

(Reporting by Stephen Nellis in San Francisco; Editing by Chizu Nomiyama, Rod Nickel)

Key Takeaways

  • GlobalFoundries filed two lawsuits in the U.S. District Court for the Western District of Texas and one complaint with the U.S. International Trade Commission to block imports of allegedly infringing chips by Tower Semiconductor (en.wikipedia.org).
  • The dispute highlights increasing tension among specialty chipmakers amid GlobalFoundries’ ongoing U.S. investment push—planned $16 billion expansion in New York and Vermont, including R&D in silicon photonics and GaN technologies (vermontbiz.com).
  • GlobalFoundries and Tower compete in niche markets like radio‑frequency and silicon photonics, positioning this patent clash as a strategic conflict over next‑generation chip tech rather than scale or process node leadership (vermontbiz.com)

References

Frequently Asked Questions

What is the dispute between GlobalFoundries and Tower Semiconductor about?
GlobalFoundries accuses Tower Semiconductor of infringing on 11 patents related to manufacturing chips used in smartphones and electronics.
Where has GlobalFoundries filed lawsuits against Tower Semiconductor?
GlobalFoundries filed two complaints in the U.S. District Court for the Western District of Texas and one at the U.S. International Trade Commission.
What does GlobalFoundries seek from the U.S. International Trade Commission?
GlobalFoundries seeks to block the import into the U.S. of chips made by Tower Semiconductor using the contested patented technologies.
What types of chips do GlobalFoundries and Tower Semiconductor specialize in?
They focus on specialty chips such as radio-frequency chips and silicon photonics rather than the fastest and smallest computing chips.
Where is GlobalFoundries expanding its manufacturing facilities?
GlobalFoundries plans to expand its facilities in Vermont and New York to strengthen research and development.

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