ATT is suing Cox Communications for infringing eight patents dealing with network quality after the regional cable provider ignored its complaints about the issue and made billions off of the technology, according to a new lawsuit. In the suit filed Friday in Delaware federal court against Cox and more than 30 of its regional units, ATT said that Cox had been warned about the claims of patent infringement as far back as 2009. ATT claims the patents were infringed in Coxs use and sale of digital video recorders, set top boxes, Internet and telephone systems, according to the lawsuit.
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