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Qualcomm’s dispute with Arm is no longer only a contract fight. Reports published in March 2025 said Qualcomm had taken its complaints about Arm’s licensing practices to competition authorities in the European Union, the United States and South Korea. Qualcomm alleged that Arm was restricting access to processor technology, withholding technology it believed it was entitled to receive, and shifting from a relatively neutral licensing platform toward competing directly with its own customers.
Arm denies anti-competitive conduct and has characterized the regulatory campaign as an effort by Qualcomm to gain leverage in their wider commercial litigation. As of August 18, 2026, the public record described a reported U.S. Federal Trade Commission investigation, but no final finding that Arm violated antitrust law.
The short version
- Qualcomm reportedly complained to the European Commission, U.S. Federal Trade Commission and Korea Fair Trade Commission in March 2025.
- The allegations concern access to Arm processor architecture and related technology, licensing conditions, and alleged delays or refusals to supply technology.
- The regulatory campaign grew out of the separate Qualcomm–Nuvia licensing dispute.
- Qualcomm argues that Arm’s move toward designing more complete chips could create a conflict between Arm’s role as a technology supplier and its role as a competitor.
- Arm denies Qualcomm’s allegations and says the antitrust claims are connected to the commercial dispute.
- Reuters reported in May 2026, citing Bloomberg News, that the FTC was investigating Arm’s semiconductor-technology licensing practices. That report was not a final enforcement finding.
Why the dispute matters
Arm sits high in the semiconductor supply chain. It develops processor architectures, CPU designs, graphics processors, neural-processing technology, interconnect products and related intellectual property. Companies such as Qualcomm license that technology and use it to create chips for smartphones, PCs, vehicles, servers and other products.
That position has traditionally made Arm an upstream supplier to companies that compete with one another in finished processors. Qualcomm’s complaint challenges what happens when that supplier also moves closer to designing and selling complete chips of its own.
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The central question is not simply whether Arm may compete. Vertical integration is not automatically unlawful. The question regulators may examine is whether Arm used control over influential processor technology to disadvantage companies that depend on access to it.
How Arm’s licensing model works
Arm does not generally manufacture the finished chips found in phones or servers. Instead, it licenses intellectual property that chip designers can incorporate into their own products. Arm typically receives licensing fees and royalties based on chips that use its technology.
The exact rights depend on the agreement. Arm’s filings describe arrangements including:
- Arm Total Access: an annual-fee arrangement providing access to a portfolio of CPU and related technologies.
- Arm Flexible Access: access to a portfolio that generally excludes the newest products, with a separate fee potentially required when an included product is used in a final chip design.
It is useful to distinguish several layers of technology:
- Instruction-set architecture: the underlying set of commands that software can use to communicate with a processor.
- CPU core designs: implementations of that architecture that a chip company may license or customize.
- Broader processor IP: GPUs, neural-processing units, interconnects and other building blocks.
- Complete chips and systems: finished products designed and sold by companies such as Qualcomm and other chipmakers.
Qualcomm’s allegations concern access and licensing conditions. The commercial tension is intensified by Arm’s reported interest in moving further downstream into chip design.
How the Qualcomm–Nuvia dispute began
Qualcomm acquired chip-design startup Nuvia in 2021. Nuvia had its own Arm Architecture License Agreement. Arm argued that the agreement created obligations that did not automatically disappear or become freely transferable after Qualcomm acquired the company.
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Arm sought to prevent Qualcomm and Nuvia from using or transferring relevant Nuvia technology and associated trademarks. Qualcomm responded that its separate Arm agreements covered the resulting products and that it had complied with its contractual obligations.
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A jury trial in December 2024 produced only a partial result. According to Arm’s litigation disclosures, the jury concluded that certain technology was licensed to Qualcomm and found that Qualcomm had not breached the Nuvia agreement. It did not reach a verdict on whether Nuvia had breached its own agreement. Post-trial motions remained pending in Arm’s 2025 filing.
The parties were also involved in a separate case. Qualcomm filed a Delaware action on April 18, 2024, concerning alleged delivery obligations under its Qualcomm Architecture License Agreement. Qualcomm amended that case in December 2024 to add tort and anti-competition claims. Arm’s May 2025 filing said the case was scheduled for trial on March 9, 2026. The available dossier does not establish the result of that trial date, so it should not be described as a resolution.
What Qualcomm accused Arm of doing
Qualcomm’s claims were reported through confidential regulatory contacts and filings rather than a fully public complaint. They should therefore be treated as allegations, not established facts.
Restricting access to processor technology
Qualcomm alleged that Arm was limiting access to processor architecture and related technology that Qualcomm believed it was entitled to receive under existing licensing arrangements.
Withholding or delaying technology
Qualcomm also alleged that Arm failed to supply or delayed supplying technology required under its agreements. This overlaps with Qualcomm’s separate contractual claims, which is one reason the legal and regulatory matters can easily be confused.
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Changing an historically broad licensing model
The reported complaints argued that Arm had operated an open licensing network for more than two decades but was restricting access as it moved toward a more competitive position in the chip market.
Using control over critical IP against licensees
Qualcomm’s theory is that a company with substantial influence over processor technology could use licensing terms, access decisions or product availability to affect which downstream companies can develop competing processors.
Competing with its own customers
Reports in 2025 described Arm as considering or pursuing more complete chip products, including server-oriented designs. Qualcomm argues that this could put Arm in the position of supplying companies it also competes against.
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Arm’s response
Arm denies Qualcomm’s anti-competitive claims. It has characterized Qualcomm’s regulatory campaign as an attempt to gain leverage in the ongoing commercial dispute and has said it intends to defend the claims.
Arm’s position is important because the same conduct can be viewed in two different ways. A change in licensing terms might protect intellectual property, simplify product support or reflect a legitimate business strategy. But if access is selectively denied or conditioned to disadvantage downstream rivals, regulators could examine whether the practice has an exclusionary effect.
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The dispute therefore turns on evidence about agreements, product access, communications with licensees, market conditions and the practical effects of Arm’s policies—not simply on whether Arm has entered a new line of business.
Where Qualcomm took the dispute
| Jurisdiction | Authority | Status and qualification |
|---|---|---|
| European Union | European Commission | Named in March 2025 reports describing Qualcomm’s confidential regulatory contacts. The public reporting did not necessarily establish a formal investigation at that time. |
| United States | Federal Trade Commission | Reuters reported in May 2026, citing Bloomberg News, that the FTC was investigating Arm’s licensing of semiconductor technology. The FTC had not immediately commented in the cited report. |
| South Korea | Korea Fair Trade Commission | Named in the March 2025 reporting. Reuters later cautioned that it could not independently verify that any South Korean investigation stemmed from Qualcomm’s complaint. |
A complaint, confidential meeting or preliminary inquiry is not the same as a formal enforcement action. Regulators can request documents, interview customers and competitors, define relevant markets, close a matter without action, negotiate remedies or bring a case if they believe the evidence supports it.
The main legal questions
- What is the relevant market? It could involve Arm’s instruction-set architecture, CPU cores, processor IP, data-center technology or a narrower category. The answer affects every later part of the analysis.
- Does Arm have market power? The existence of competitors such as Apple, MediaTek, Nvidia, AMD or alternative architectures does not by itself settle that question.
- Was access denied, delayed or conditioned unfairly? Regulators could examine whether Qualcomm or other licensees received materially different treatment and why.
- Is Arm’s downstream expansion legitimate competition? Arm may argue that designing chips adds competition and innovation. Qualcomm may argue that Arm can use its upstream position to favor its own products.
- Is the dispute contractual or competitive? A licensing breach affecting one company is not automatically an antitrust violation. Regulators would look for harm extending beyond Qualcomm to rivals, customers or the competitive process.
- What was the business justification? Technical requirements, security, intellectual-property protection and product strategy could all be relevant.
- Was there consumer or market harm? Possible theories could involve higher prices, reduced innovation, fewer choices or delays in products using Arm technology. Those effects remain potential consequences, not established outcomes.
Why Qualcomm used regulators as well as courts
A contract lawsuit ordinarily asks what particular agreements require and whether a party breached them. An antitrust complaint can address broader questions about rivals, customers, market access and the structure of competition.
Running both tracks can also create strategic leverage. A regulator may investigate conduct even while the parties are litigating contract claims, and a successful competition case could potentially affect Arm’s licensing practices beyond Qualcomm.
That does not establish Qualcomm’s private motive. Arm’s assertion that the campaign is litigation leverage is part of the dispute’s context, while Qualcomm’s position is that the conduct raises broader competition concerns.
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Arm-based technology is used across mobile devices, PCs, cloud infrastructure, vehicles and AI systems. If licensing access becomes less predictable, chip designers could face greater uncertainty about product planning, development costs and launch schedules.
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The possible effects are indirect and depend on future findings. A regulatory remedy could preserve access or clarify licensing rules. A settlement could reduce uncertainty without deciding the legal merits. Conversely, prolonged litigation could encourage customers to seek alternatives, including other processor architectures such as RISC-V where technically and commercially practical.
Arm’s expansion could also have a pro-competitive outcome if it adds a capable new supplier of finished processors, particularly in data-center markets. The concern is not competition itself; it is whether the company can compete fairly while controlling technology that its rivals need.
Arm disclosed that Qualcomm represented 10% of its revenue for the fiscal year ended March 31, 2025. That figure illustrates the commercial importance of the relationship, but it does not determine whether either side’s legal position is correct.
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Timeline
- 2021: Qualcomm acquired Nuvia, triggering Arm’s objections over the treatment of Nuvia’s Arm license.
- April 18, 2024: Qualcomm filed a separate Delaware action concerning alleged delivery obligations under its Qualcomm Architecture License Agreement.
- December 2024: A jury trial in the Nuvia dispute produced a partial result. Qualcomm amended the Delaware case to add tort and anti-competition claims.
- March 25–27, 2025: Reports said Qualcomm had taken its complaints to the European Commission, FTC and KFTC.
- May 28, 2025: Arm’s Form 20-F disclosed the Qualcomm litigation, the anti-competition allegations and the possibility of antitrust investigations in multiple jurisdictions.
- March 9, 2026: Arm’s filing identified this as the scheduled trial date for Qualcomm’s separate Delaware action. The available record does not establish a result.
- May 15–16, 2026: Reuters reported, citing Bloomberg News, that the FTC was investigating Arm’s licensing practices. Reuters also qualified the connection between Qualcomm’s complaint and South Korean activity.
- August 18, 2026: No final settlement, judgment, agency decision or closure should be assumed without a later authoritative filing or announcement.
What could happen next
- Regulatory closure: Authorities could investigate and take no action if they find insufficient evidence or a legitimate business justification.
- Further investigation: Regulators could seek contracts, internal communications, technical records and information from Arm’s customers and rivals.
- Negotiated licensing changes: Arm and regulators could agree to clarify access, pricing or non-discrimination terms without a final liability finding.
- Formal enforcement: An authority could bring a case if it concludes that Arm’s conduct violated applicable competition law.
- Commercial settlement: Qualcomm and Arm could resolve some or all of their private litigation independently of regulatory proceedings.
- Continued diversification: Chip designers could explore alternative architectures or suppliers, although switching involves technical, software and ecosystem costs.
What is established—and what is not
It is established that Qualcomm and Arm have been engaged in substantial litigation and that reports described Qualcomm’s complaints to regulators in three jurisdictions. It is also established, based on the cited 2026 reporting, that the FTC was investigating Arm’s licensing practices.
It is not established by those reports that Arm has a monopoly, violated antitrust law, deliberately withheld technology unlawfully, or caused measurable harm to consumers. Nor did the December 2024 jury proceeding resolve every contractual or competition issue between the companies.
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