A Delaware federal judge has invalidated three patents at the center of a series of lawsuits accusing major companies of infringing upon the technology that underpins Siri, the digital assistant built into Apple products.
U.S. District Judge Richard G. Andrews of the District of Delaware on March 31 said the patents’ ”high level of generality” prevented a subsidiary of the Canadian intellectual property firm WiLAN from claiming infringement by a contingent of tech heavyweights, including Amazon.com Inc. and Sony Electronics Inc.
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