In 2013, Sonos scored a coup when Google agreed to design its music service to work easily with Sonos’s home speakers. For the project, Sonos handed over the effective blueprints to its speakers.
It felt like a harmless move, Sonos executives said. Google was an internet company and didn’t make speakers.
The executives now say they were naïve.
On Tuesday, Sonos sued Google in two federal court systems, seeking financial damages and a ban on the sale of Google’s speakers, smartphones and laptops in the United States. Sonos accused Google of infringing on five of its patents, including technology that lets wireless speakers connect and synchronize with one another.
Sonos’s complaints go beyond patents and Google. Its legal action is the culmination of years of growing dependence on both Google and Amazon, which then used their leverage to squeeze the smaller company, Sonos executives said.
Sonos advertises its speakers on Google and sells them on Amazon. It built their music services and talking virtual assistants directly into its products. Sonos workers correspond via Gmail, and run the business off Amazon’s cloud-computing service.
Then Google and Amazon came out with their own speakers, undercutting Sonos’s prices, and according to Sonos executives, stealing its technology. Google and Amazon each now sell as many speakers in a few months as Sonos sells in one year.
Sonos executives said they decided to sue only Google because they couldn’t risk battling two tech giants in court at once. Yet Mr. Spence and congressional staff members have discussed him soon testifying to the House antitrust subcommittee about his company’s issues with them.