FTC probes Arm over chip licensing, antitrust concerns grow

Arm’s licensing grip on the blueprints behind modern chips has drawn a U.S. antitrust probe that could reverberate far beyond one company. The Federal Trade Commission is examining whether the British chip designer has tried to illegally monopolize parts of the semiconductor market by threatening to reject or downgrade licensing agreements that chip makers need to design central processing units.

The inquiry goes to the core of how Arm makes money and how much leverage it holds over the industry. Arm’s architecture sits inside a wide range of devices and systems, and a significant share of its revenue comes from licensing fees and royalties paid by companies such as Nvidia and Apple. If regulators decide Arm used that position to squeeze customers or steer negotiations, the case could force changes in the terms that shape chip design across smartphones, servers and AI hardware.

The FTC notified Arm of the investigation this year and demanded that the company preserve documents, a sign that regulators are treating the matter as more than a routine complaint. Arm declined to comment on the reported probe, and the FTC did not immediately respond. The question now is whether Arm’s long-running model of licensing intellectual property, while keeping tight control over its architecture, has crossed the line from aggressive business strategy into conduct regulators view as abusive.

The company is already fighting a separate battle with Qualcomm over whether Qualcomm breached a contract after it bought chip startup Nuvia. Arm has strongly rejected Qualcomm’s allegations of anticompetitive conduct, saying the claims are an attempt to gain leverage in a commercial dispute. That clash underscores how much power Arm has over the companies that build on its designs, and how costly any disruption to that framework could be for rivals and customers alike.

The pressure is not confined to Washington. South Korea’s antitrust regulator was also said to be probing Arm’s practices, adding to the scrutiny around a business model that has become central to modern computing. Any move to restrict how Arm licenses its technology could change how chips are designed, how competitors negotiate access and how much control Arm keeps over the fast-growing AI and mobile markets.

For semiconductor makers, device manufacturers and AI hardware companies, the stakes are strategic. Arm’s architecture has helped define the direction of the industry for years; now regulators are testing whether the rules that made it powerful have become a barrier to competition.