In one of its three litigation campaigns to date, Rondevoo Technologies, LLC asserts a single patent generally related to “clustering” keys on an input device, such as a telephone keypad or computer keyboard, to facilitate selection entry. The NPE has targeted the ability to enter alternate (i.e., accented) characters through the keypads of certain Android smartphones in complaints filed earlier against LG Electronics (LGE), Sony, and ZTE and now in a new complaint filed against HTC (2:18-cv-01625), calling out the HTC Desire 300. The deadlines to answer or otherwise respond have been extended into December for LGE and Sony; ZTE has answered.