One Qualcomm patent allows a smartphone to quickly connect to the Internet once the device is turned on. Another one deals with graphics processing and battery life, while the third lets apps on smartphone download data more easily.
"Today's unanimous jury verdict is the latest victory in our worldwide patent litigation directed at holding Apple accountable for using our valuable technologies without paying for them," Qualcomm General Counsel Don Rosenberg said in a statement.
Apple said it was "disappointed".
"Qualcomm's ongoing campaign of patent infringement claims is nothing more than an attempt to distract from the larger issues they face with investigations into their business practices in US federal court, and around the world," an Apple spokesperson was quoted as saying.
The trial next month will also examine Qualcomm's licensing business. The two companies have been entangled in legal battles for years.
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