A San Francisco federal judge rules Google must face trial, set for May 8, over Sonos' patents, but invalidates two of four patents and narrows Sonos' claims (Blake Brittain/Reuters)

Blake Brittain / Reuters:
A San Francisco federal judge rules Google must face trial, set for May 8, over Sonos' patents, but invalidates two of four patents and narrows Sonos' claims  —  Alphabet's Google (GOOGL.O) received a mixed ruling on Thursday from a San Francisco federal judge in a patent lawsuit brought by Sonos Inc …

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