Signal Coding LLC, a Delaware entity, has launched a litigation campaign over up to three signal processing patents that currently available USPTO records show as held by Wipro. In separate Western District of Texas complaints, the plaintiff accuses Analog Devices (6:19-cv-00508), NXP Semiconductors (NXP USA) (6:19-cv-00509), STMicro (6:19-cv-00511), and Texas Instruments (6:19-cv-00512) through the provision of various communication chip architecture, including decoders, digital signal processors, encoders, processors, RF tuners, and transceivers.