AT&T, Verizon, Others Accused Of Infringing Modem Patent
Driden alleges in six lawsuits that AT&T, Verizon, CenturyLink Inc., EarthLink Inc., Frontier Communications Corp. and MegaPath Inc. unlawfully used U.S. Patent Number 5,841,840 on their Internet services, customer service lines, operations support systems and central office equipment.
The '840 patent is titled “Multiple line modem and method for providing voice on demand” and allows a user to...
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