TQ Delta Shifts Campaign Focus from Network Device Makers to Media Service Providers

  • July 21, 2015

TQ Delta, LLC filed suit against six communications providers, Comcast (1:15-cv-00611), Cox (1:15-cv-00612), DirecTV (1:15-cv-006113), DISH Network (1:15-cv-00614), Time Warner Cable (1:15-cv-00615), and Verizon (1:15-cv-00616), asserting a group of seven patents. The patents-in-suit relate to various aspects of DSL technology, including sub-carrier phase scrambling, transmitting, and receiving sub-channel information, and multi-carrier modulation (6,961,3697,835,4308,238,4128,432,956, 8,611,4048,718,1589,014,243). All but two of the patents (the ‘158 and ‘243 patents) have been involved in TQ Delta’s previous litigation. Defendants’ digital cable, media streaming, and DVR services, as well as products, such as set-top boxes, that make those services possible, are all accused of infringing the patents-in-suit.


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