The federal jury in Texas has directed Apple to pay a running royalty to PMC, which is generally based on the amount of sales of a product or service. However, Apple said it was disappointed with the verdict and planned to appeal.
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PMC, a licensing firm, had originally sued Apple in 2015 alleging the tech giant's iTunes service infringed seven of its patents.
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Apple successfully challenged PMC's case at the US patent office, but an appeals court in March last year reversed that decision, paving the way for the trial.
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The iPhone maker did not immediately respond to Reuters' request for comment but told Bloomberg that it was disappointed with the ruling and would appeal.
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"Cases like this, brought by companies that don't make or sell any products, stifle innovation and ultimately harm consumers," Apple was quoted as saying by Bloomberg.















