Apple, AT&T and Klausner Settle Patent Lawsuit. Apple AT&T Klausner. n December of last year, Klausner Technologies filed a patent infringement lawsuit against Apple claiming the company’s iPhone Visual Voicemail feature violated patents Klausner held, which...

Klausner owns two patents related to a voicemail retrieval system using a visual interface. According to the lawsuit, Apple’s iPhone infringes on these two patents. Klausner currently has similar lawsuits pending against Skype, Comcast, and Cablevision. The...