ALEXANDRIA, Va., March 17 -- United States Patent no. RE50,834, issued on March 17, was assigned to 8x8 Inc. (Campbell, Calif.).
"Generic unified presence detection system" was invented by Leopoldo Yanes (Boston), Alan Sapede (Boston), Julio Viera (Boston) and Clement Wehrung (Boston).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for receiving a first signal from a first client device, the first signal indicative of a first user activity is provided. The method includes receiving a second signal from a client device, and storing the first signal and the second signal in an activity history log associated with the first user. The method includes determining, by a server, a presence status of the firs...