Arm: The Supplier That Sued and LostNarrow moat
Qualcomm (QCOM) — moat facet
A supplier that put three years of Qualcomm's compute roadmap in front of a judge, lost, and is still the supplier.
Arm licenses Qualcomm the instruction set its chips are built on, and spent three years in court trying to force it to stop using the CPU it bought.
The dispute began in August 2022, when Arm sued Qualcomm and Nuvia in Delaware, arguing that following the 2021 Nuvia acquisition the pre-existing architecture licence could not transfer and that Qualcomm was obliged to renegotiate.1 What was actually at stake was the Oryon cores — the foundation of Snapdragon X for PCs, of the data-centre ambition, and of a good deal of the automotive compute story.
Qualcomm won. A jury in December 2024 found no breach; in September 2025 the court ruled in Qualcomm's favour and dismissed the case entirely, and Arm said it would appeal immediately.2 Qualcomm's own separate case against Arm, filed in January 2025, was set for trial in 2026.
The relationship survives the litigation because it has to. Qualcomm's parts implement Arm's architecture under licence, and Arm's business is licensing to companies like Qualcomm. Neither can walk away.
What the episode establishes is the shape of the risk. A supplier with a contractual chokehold on the instruction set can put a company's entire compute roadmap in front of a judge for three years, and the only defence is winning.
Watch the appeal. A reversal would reopen a question the market currently treats as settled.
Arm lost at trial in December 2024 and lost the case in full in September 2025. The dependency is unchanged but the immediate threat to the Oryon roadmap is resolved, subject to appeal.
Every Qualcomm processor runs on Arm's instruction set, and licence fees are part of the cost of each chip. Costs rising while revenue falls would show suppliers, Arm included, taking a larger share.
Source: Qualcomm Form 10-Q, Q3 FY2026 ↗- ReportedThe dispute began in August 2022, when Arm sued Qualcomm and Nuvia in Delaware, arguing that following the 2021 Nuvia acquisition the pre-existing architecture licence could not transfer and that Qualcomm was obliged to renegotiate.Coverage of the conclusion of Arm Ltd. v. Qualcomm, October 2025. Arm sued Qualcomm and its subsidiaries Qualcomm Technologies and Nuvia in the District of Delaware on 31 August 2022, alleging that following Qualcomm's 2021 acquisition of Nuvia the pre-existing architecture licence could not transfer and that Qualcomm was obliged to renegotiate. At the heart of the case was Qualcomm's use of Oryon cores, originally developed by Nuvia, in Snapdragon X processors. A December 2024 jury found Qualcomm had not breached its licence agreements but deadlocked on one question; in September 2025 the court ruled in Qualcomm's favour and dismissed the case in full, and Arm said it would immediately file an appeal. A separate case Qualcomm initiated against Arm in January 2025 was anticipated to reach trial in 2026. — 2025 · publ. 2025-10-01 · source ↗
- ReportedA jury in December 2024 found no breach; in September 2025 the court ruled in Qualcomm's favour and dismissed the case entirely, and Arm said it would appeal immediately.Coverage of the conclusion of Arm Ltd. v. Qualcomm, October 2025. Arm sued Qualcomm and its subsidiaries Qualcomm Technologies and Nuvia in the District of Delaware on 31 August 2022, alleging that following Qualcomm's 2021 acquisition of Nuvia the pre-existing architecture licence could not transfer and that Qualcomm was obliged to renegotiate. At the heart of the case was Qualcomm's use of Oryon cores, originally developed by Nuvia, in Snapdragon X processors. A December 2024 jury found Qualcomm had not breached its licence agreements but deadlocked on one question; in September 2025 the court ruled in Qualcomm's favour and dismissed the case in full, and Arm said it would immediately file an appeal. A separate case Qualcomm initiated against Arm in January 2025 was anticipated to reach trial in 2026. — 2025 · publ. 2025-10-01 · source ↗