Sisvel Ramps Up DSL Campaign

February 21, 2019

Sisvel International S.A. (d/b/a Sisvel Group) has added four new cases to its litigation campaign, begun in August 2017, over a portfolio of former Panasonic patents allegedly essential to the practice of the ITU G.994.1 standard related to DSL technology. These latest complaints accuse Consolidated Communications (1:19-cv-00331), GTT Communications (1:19-cv-00328), SONIC.NET (1:19-cv-00330), and TDS Communications (1:19-cv-00329) of infringing the same nine patents asserted in earlier suits against CenturyLinkFrontier Communications, and Verizon, all through the through the provision of “DSL technology, equipment and services” that comply with that standard. The August 2017 cases against CenturyLink and Frontier have been dismissed, while Verizon, sued in November 2018, has just filed its answer to Sisvel’s complaint.

Subscription Required

This content requires a subscription to view

  • Over 7,000 news articles covering new patent cases, key policy decisions, and USPTO assignments
  • Advanced custom alerts for campaigns and entities
  • Proprietary litigation timelines
  • Full access to Federal Circuit, PTAB, and ITC dockets
  • Judge, venue, and law firm analytics