AT&T is filing a patent lawsuit against Cox Communications

AT&T is going to war against Cox Communications over patents for network optimization technology. AT&T said it has been warning Cox about its use of the technology as far back as 2009; in addition, the Dallas-based carrier claims that Cox refused to talk to AT&T about licensing the technology. “Cox generates billions of dollars in revenue every year through its use of AT&T’s technologies,” the telecommunications giant said in the lawsuit filing.