In a preliminary response to a petition for IPR filed by RPX Corporation, patent owner Cedatech Holdings, LLC noted that it had disclaimed all six claims of its 7,707,591 patent. Cedatech asserted the ‘591 patent in litigation brought against Apple, Dell, and HTC in July 2014, adding cases against HP and LG Electronics (LGE) to the campaign in November 2014. The ‘591 patent relates to a system for integrating an audio or video (AV) program with another application program so that users can access AV program functionality as if natively provided by the other application. The focus of Cedatech’s sole litigation campaign had been smartphones and tablets, specifically those with speech recognition features.