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.

According to AT&T, the patented technology is used in video set-top boxes, digital video recorders, Internet service, and telephone systems. It is also used to deliver telecommunications services more quickly and at less cost.

AT&T also alleges in the suit that Cox actively induced its customers and employees to infringe.

If AT&T wins the case, Cox would have to pay an ongoing royalty for use of the technology.

Cox said it was still reviewing the suit and was not ready to comment Friday.

See the Complaint here.

Via: Re/code