Inside QE’s Remarkable UK Class Action Trial Win for Qualcomm

Episode description:

John is joined by Miguel Rato and Marixenia Davilla, both partners in Quinn Emanuel’s Brussels office. They discuss a major antitrust and competition law class action brought in the United Kingdom against Qualcomm, a leading developer of mobile communications technology.

The case was filed as an opt-out class action on behalf of consumers and alleged that Qualcomm had abused a dominant market position by charging excessive patent royalties to smartphone manufacturers, particularly Apple and Samsung. The plaintiff claimed that Qualcomm used its strength as a supplier of mobile chipsets to pressure manufacturers into accepting licensing terms that allegedly resulted in inflated consumer prices. Remarkably, the plaintiff class withdrew the case at the end of the first phase of the trial.

European competition law differs from U.S. antitrust law in that it permits claims based not only on the exclusion of rivals, but also on the alleged exploitation of customers through excessive pricing. In this case, the plaintiffs argued that Qualcomm leveraged its market power in chipsets to impose unfair licensing terms. Qualcomm maintained that its licensing model reflected legitimate compensation for decades of innovation and intellectual property development.

The trial focused in detail on Qualcomm’s relationships with Apple and Samsung. Evidence showed that key licensing arrangements were entered into at times when the manufacturers were not dependent on Qualcomm chipsets, undermining the claim that Qualcomm used chipset supply as leverage. Additional evidence demonstrated that royalty levels did not vary according to the volume of chipset purchases and that customers could obtain licenses independently of chipset transactions. Economic analysis likewise failed to reveal any connection between alleged dependence on Qualcomm products and the royalties ultimately negotiated.

The case proceeded to a five-week trial before the Competition Appeal Tribunal in London. The first phase addressed market definition, dominance, liability, and whether the allegedly excessive royalties could nevertheless be justified as reasonable. Before the tribunal issued its ruling on the first phase, the class representative agreed to withdraw the case entirely. Qualcomm paid nothing, each side bore its own costs, and the litigation ended without a judgment.

A judge reviewing the withdrawal concluded that the claim had no realistic prospect of success, making the case a rare instance in which a plaintiff abandons a major class action after trial, but before a decision was rendered.

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Published: Jun 5 2026

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