Parus Holdings, Inc. has launched its second litigation campaign, filing suit against Alphabet (Google) (6:19-cv-00433), Apple (6:19-cv-00432), LG Electronics (LGE) (6:19-cv-00437), and Samsung (6:19-cv-00438) over the provision of products that feature virtual assistants, including Bixby (as to Samsung), Google Assistant (as to Google, LGE, and Samsung) and Siri (as to Apple). The two asserted patents are homegrown and generally relate to using voice recognition to browse the Internet on a device. The first litigation campaign of Parus Holdings ran into an Alice buzz saw when District Judge Sue Robinson in the District of Delaware invalidated the patents asserted there, against banks, under Alice, a decision affirmed per curiam by the Federal Circuit in April 2017, roughly one year before the appellate court’s Berkheimer and Aatrix decisions raised questions about the propriety of early patent eligibility determinations.