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In March 2025, Qualcomm reportedly complained to competition authorities in the United States, the European Union and South Korea that Arm was restricting access to important technology. The allegations grew out of a licensing dispute tied to Qualcomm’s 2021 acquisition of custom-chip designer Nuvia. Arm denied Qualcomm’s antitrust characterization. The dispute later produced a favorable contract ruling for Qualcomm in Delaware, but that was not a decision that Arm violated antitrust law.
What happened—and what has not been established
Bloomberg reported that Qualcomm made confidential complaints or raised its concerns in private dealings with the U.S. Federal Trade Commission (FTC), the European Commission and South Korea’s Fair Trade Commission (KFTC). The reporting, based on people familiar with the matter, described a regulatory campaign rather than a publicly announced antitrust lawsuit. Bloomberg’s report said Qualcomm alleged that Arm was limiting access to technology after more than two decades of operating an open licensing model.
That remains an allegation, not a finding. Arm rejected Qualcomm’s account, saying it was an attempt to distract from the contractual dispute. South Korean regulators later reportedly inspected Arm’s Seoul office, an indication of regulatory interest—not proof of a violation or a final enforcement decision. The public record reviewed through August 18, 2026, does not establish a final antitrust ruling against Arm by any of the three regulators.
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A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11| Jurisdiction | Reported development | What it does not establish |
|---|---|---|
| United States | Qualcomm reportedly took its concerns to the FTC. | No public final FTC liability finding was verified. |
| European Union | Qualcomm reportedly complained to the European Commission; a complaint was also reported in late 2024. | No public final Commission liability finding was verified. |
| South Korea | Qualcomm reportedly complained to the KFTC; Bloomberg Law later reported an inspection of Arm’s Seoul office. | An inspection is not a charge or a finding of wrongdoing. |
A confidential complaint, regulator meeting, information request or office inspection can be part of an inquiry. None, on its own, means that a regulator has formally charged a company, concluded that it broke the law or ordered a remedy.
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The licensing dispute behind the complaints
Arm develops and licenses technology used to design processors. The licensing layers matter because “Arm technology” can mean different things: an instruction-set architecture that defines the commands a processor can run; an Arm-designed CPU core; a license allowing a customer to design its own compatible core; or other implementation and system IP. Arm’s more integrated Compute Subsystems (CSS) combine elements such as CPU cores, interconnect and supporting IP, along with software or validation support.
The public reporting did not identify the exact technology Qualcomm said was being restricted. Some coverage speculated that the issue might involve CSS or other integrated offerings, but that has not been confirmed. Treating CSS as the established subject of the complaints would go beyond the available evidence.
The conflict’s central mechanism is Qualcomm’s acquisition of Nuvia, a custom-CPU company, for about $1.4 billion in 2021. Nuvia held an Arm architecture license for developing custom cores. Arm says it terminated Nuvia’s license in March 2022 because Nuvia had not obtained consent to assign it. In August 2022, Arm sued Qualcomm and Nuvia in Delaware, arguing that Nuvia’s license could not simply transfer to Qualcomm and alleging related contractual breaches. Qualcomm maintained that its own Arm agreements covered the acquired technology and its use.
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The stakes rose as Nuvia’s work became associated with Qualcomm’s custom Oryon CPU cores. Arm’s account of the litigation and license history appears in its FY2025 filing. Qualcomm also disclosed that Arm issued a breach notice in October 2024, then withdrew it on January 8, 2025, while reserving its rights. Qualcomm said in March 2025 that it planned to seek permission to add a claim that Arm had failed to offer commercially reasonable prices and terms. Those are competing contract positions, not by themselves proof of antitrust misconduct. Qualcomm’s SEC disclosure describes the notice and related claim history.
Qualcomm’s theory—and Arm’s answer
Qualcomm’s reported antitrust argument appears to be that Arm controls access to a critical technology layer and is changing how it licenses that technology while moving closer to competing with companies that rely on it. If Arm restricted access, changed terms, or withheld particular technologies from Qualcomm while offering them to comparable rivals, Qualcomm could argue that the conduct raises rivals’ costs, delays products or limits competition.
Arm’s response is that Qualcomm is recasting a dispute about the terms and transferability of specific licenses as an antitrust case to gain leverage. Arm says it is entitled to enforce its agreements and protect its intellectual property. Coverage of Arm’s response reported that the company called Qualcomm’s allegations a “desperate attempt” to distract from the commercial dispute.
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These positions involve questions regulators would have to examine rather than assume: What rights did Qualcomm and Nuvia hold? Could Nuvia’s license be transferred? Did Arm change access or pricing, and were Qualcomm’s terms different from those offered to similarly situated licensees? Does Arm compete downstream with licensees in markets where its licensing decisions could disadvantage them? What market is relevant—architecture licensing, CPU cores, integrated subsystems or something broader?
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1Clear out junk files and repair common Windows errors2Scan for outdated or missing drivers - takes under a minute3Repair Windows errors before they cause bigger problemsA contract disagreement does not automatically amount to monopolization or abuse of dominance. Competition authorities would also need to assess market power, exclusionary conduct, its effects on competition and any legitimate business justification. A customer receiving terms it considers unfavorable is not, by itself, proof of harm to competition or consumers.
Why Qualcomm’s expansion makes the conflict more consequential
Qualcomm has long depended on Arm-related technology in mobile processors, but its ambitions extend further. Its Snapdragon X platform has made it a more visible competitor in Windows PCs, a market historically dominated by x86 processors from Intel and AMD. Qualcomm has also pursued custom CPU designs for potential expansion into server, data-center and AI-related hardware.
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For those plans, stable licensing access, predictable terms and continued technical support can matter to product roadmaps. Arm’s move toward more integrated offerings raises a related strategic question: is Arm only a supplier of IP, or could it increasingly compete with the companies that license its technology? A company can have commercial reasons to offer more complete products, while the combination of supplier and competitor roles can still merit regulatory scrutiny.
The possible effects are not limited to the two companies. Chip designers may face uncertainty about access to architectures, cores, system IP and support. Smartphone makers, PC manufacturers and cloud companies could be affected if licensing changes alter suppliers’ costs or product plans. But the available evidence does not show that Qualcomm products were halted or that consumers faced an immediate supply disruption because of this dispute.
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Moving to another architecture, including RISC-V, is not an instant workaround. It can mean rebuilding software compatibility, tools and engineering expertise, as well as losing some of the benefits of an established ecosystem. The practical cost depends on the product and the company; an alternative architecture’s existence does not automatically make Arm replaceable.
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What the Delaware case decided
In September 2025, Qualcomm announced that the Delaware court had dismissed Arm’s remaining claim after a jury found that certain technology was licensed to Qualcomm under its existing agreement and that Qualcomm had not breached the Nuvia architecture license agreement. The jury did not reach a verdict on whether Nuvia had breached its own agreement. Qualcomm called the outcome a complete victory; Arm’s filings also describe the later court action and the unresolved parts of the dispute.
This was a contractual litigation result, not a ruling that Arm violated antitrust law. It addressed important questions about Qualcomm’s rights and breach of contract, but it did not settle whether Arm’s broader licensing conduct excluded rivals or harmed competition. The companies have continued to disclose related proceedings: Arm’s FY2026 filing says Qualcomm filed an amended complaint against Arm Limited in March 2026 adding another breach-of-contract claim. See Qualcomm’s announcement and Arm’s FY2026 filing.
What to watch next
- Formal regulator action: A complaint or inspection may be followed by an inquiry, but a formal case, preliminary finding, liability decision or remedy would be a distinct development.
- Evidence about access and treatment: The key issue is not simply whether Qualcomm disliked its terms, but what technology was available, on what conditions, and how Arm treated comparable licensees.
- Further contract litigation or a negotiated resolution: The Delaware result resolved key claims but did not erase every related contractual issue.
- Arm’s licensing and product strategy: Changes in how Arm packages or licenses technology may affect how regulators and customers assess its role as both supplier and potential competitor.
- Customer alternatives: Architecture diversification may become more attractive to some companies, but switching entails technical and ecosystem trade-offs.
Qualcomm’s regulatory campaign has widened a high-stakes licensing dispute into a question about competition in the Arm ecosystem. The most accurate description, as of August 18, 2026, is still an allegation-and-investigation story alongside ongoing contract disputes—not a proven antitrust violation by Arm.
For context, the FTC’s earlier case against Qualcomm is a separate matter; it does not determine the merits of Qualcomm’s allegations against Arm. See the FTC case record.
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