Arm Shares Fall Over 3% After Qualcomm Wins License Dispute

Arm Holdings shares dropped more than 3% on Tuesday, October 13, after a Delaware jury ruled in favor of Qualcomm in a breach of contract lawsuit, marking another setback for the British chip technology company in its long-running legal battle with the U.S. semiconductor giant.

The jury determined that Arm violated its architectural license agreement with Qualcomm, failed to meet contractual obligations, and deliberately interfered with Qualcomm’s business operations. Qualcomm welcomed the verdict, describing it as a victory for innovation and fair competition in the semiconductor industry.

Following the announcement, Arm shares reversed earlier gains and declined more than 3%, while Qualcomm stock briefly surged before trading approximately 2% higher. The ruling added pressure on Arm as investors assessed the potential implications for its licensing business.

The dispute traces back to 2022, when Arm sued Qualcomm over alleged licensing violations related to Qualcomm’s $1.4 billion acquisition of chip startup Nuvia. Qualcomm secured a favorable jury verdict in December 2024, which was upheld in September 2025. Arm subsequently appealed that decision.

The latest lawsuit centered on Qualcomm’s allegations that Arm repeatedly breached licensing terms under an agreement extending through 2033. Qualcomm claimed Arm withheld critical software updates and chip-testing tools required to validate its custom Oryon CPU cores.

Qualcomm also accused Arm of violating contractual pricing provisions intended to ensure its royalty rates remained within 10% of the lowest available chip design pricing.

Another major allegation involved a confidential license-termination warning letter issued in 2024. Qualcomm argued that Arm intentionally leaked the document to Bloomberg, damaging its commercial reputation and contributing to the loss of a potential $170 million business agreement with Meta Platforms.

The jury's findings supported Qualcomm's claims of contractual breaches and intentional business interference. However, the company did not initially disclose details about any damages awarded in connection with the verdict.

The outcome highlights growing tensions between major semiconductor companies as competition intensifies over chip architecture, intellectual property rights, and licensing arrangements.

For Arm, the ruling raises further questions about its relationship with Qualcomm and the potential consequences for its broader semiconductor licensing strategy.