Finally, Dropcam further concedes that the claims of the Nunchi patents cover systems using sensors other than optical and acoustic sensors and that a social signature can include data obtained from these other sensors. (Dropcam Responsive Brief at 7:5-8.) If the inventor Dropcam contends that its construction does not limit the social signature to acoustic and optical sensor data only, but that its proposed construction only requires the social signature
to include “at least” acoustic and optical sensor data. (Id.) The plain language of its proposed intended to require every social signature of the Nunchi patents to include acoustic and optical sensor data, they would have used the language of claim 22 of the ’618 patent in every claim,including the referenced ’331 patent. He did not.