By: Mel R. Quintos

In TQ Delta, LLC v. Cisco Systems, Inc., decided on November 22, 2019, all the challenged claims of two patents (U.S. Patent Nos. 9,014,243 and 8,718,158) owned by TQ Delta were invalidated by the U.S. PTO Patent Trial and Appeal Board in a pair of inter partes review (IPRs) proceedings.

FactsThe challenged patents relate to an electronic communication system that lowers the “peak-to-energy power ratio” (PAR) of transmitted signals (for example, a maximum voltage signal / average voltage signal ratio) so as to reduce power consumption. Shown above is a schematic view of TQ Delta’s patented system common in both of its challenged patents. —click here to read more—