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Spherix Sub Sues AT&T over Former Harris Patent
Guidance IP sued AT&T. Guidance, a Spherix-subsidiary, accused AT&T’s positional location systems of infringing a patent related to the location of a transmitting unit relative to fixed receiving locations (5,719,584). Guidance filed its first lawsuit against T-Mobile over the same patent in August 2013. The patent originated with Harris Corporation. 12/6, Northern District of Texas, 3:13cv04777
December 12, 2013