AT&T warns companies of patent infringement

AT&T recently accused Apple Inc. and several other companies of patent infringement. AT&T owns several patents to elements AT&T representatives say are vital to MPEG-4 technology, which is used by products produced by these companies.

To correct the situation, AT&T is offering that the companies buy licenses from AT&T for the technology. In response, Apple representatives say that they believe they "have all necessary rights and licenses with respect to all of [their] products." For more information on this developing story, read AT&T Warns Apple, Others, of Patent Infringement.