An anonymous reader quotes a report from TechCrunch: A California judge has thrown out a $32.5 million verdict win for Sonos against Google after two of Sonos' patents were deemed unenforceable and invalid. As a result, Google has started to re-introduce software features it had removed due to Sonos' lawsuit. In a decision dated October 6, U.S. District Judge William Alsup said that Sonos had wrongfully linked its patent applications for multi-room audio technology to a 2006 application in order to make them appear older and claim that its inventions came before Google's products, as first reported by Reuters. "Sonos filed the provisional application from which the patents in suit claim priority in 2006, but it did not file the applications for these patents and present the asserted claims for examination until 2019," the decision (PDF) reads. "By the time these patents issued in 2019 and 2020, the industry had already marched on and put the claimed invention into practice. In fact, in 2014, five years before Sonos filed the applications and presented the claims, accused infringer Google LLC shared with Sonos a plan for a product that would practice what would become the claimed invention." The decision states that the two companies were exploring a potential collaboration, but that it never materialized. Alsup goes on to note that Google began introducing its own products that featured multi-room audio technology in 2015, and also that Sonos waited until 2019 to pursue claims on the invention. "This was not a case of an inventor leading the industry to something new," Alsup wrote. "This was a case of the industry leading with something new and, only then, an inventor coming out of the woodwork to say that he had come up with the idea first — wringing fresh claims to read on a competitor's products from an ancient application." "We recently made a change to speaker groups for Nest speakers, displays, and Chromecast where certain devices can only belong to one speaker group at a time in the Google Home app," the company wrote in a blog post. "A federal judge has found that two patents that Sonos accused our devices of infringing are invalid. In light of this legal decision we're happy to share that we will be rolling back this change."

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