Uniloc USA, INC. v. LG Electronics USA, INC., No. 19-1835 (Fed. Cir. 2020)
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Uniloc’s patent is directed to a communication system comprising a primary station (base station) and at least one secondary station (computer mouse or keyboard). In conventional systems, such as Bluetooth networks, two devices that share a common communication channel form ad hoc networks called “piconets.” Joining a piconet requires the completion of “inquiry” procedure and “page” procedures, which can take tens of seconds to complete. The invention improves conventional communication systems by including a data field for polling as part of the inquiry message, thereby allowing primary stations to send inquiry messages and conduct polling simultaneously, enabling “a rapid response time without the need for a permanently active communication link” between a parked secondary station and the primary station.
In an infringement action, the district court held that the patent’s claims were ineligible under 35 U.S.C. 101. The Federal Circuit reversed, applying the “Alice” test. The claims are directed to a patent-eligible improvement to computer functionality--the reduction of latency experienced by parked secondary stations in communication systems. The claims do not merely recite generalized steps to be performed on a computer using conventional computer activity but are directed to “adding to each inquiry message prior to transmission an additional data field for polling at least one secondary station.”
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