|Image from "How to Play Guitar Apprentice!", https://www.youtube.com/watch?v=8vgfOtIeAeQ|
Ubisoft and Guitar Apprentice are currently engaged in litigation over one of Guitar Apprentice's patents, U.S. Pat. No. 8,586,849, which is generally directed to a system for progressive instruction in playing a guitar. See case no. 2-13-cv-02903 (W.D. Tenn., filed November 19, 2013). Ubisoft recently filed a petition for Inter Partes Review with the USPTO regarding the '849 patent. See IPR 2015-00298, filed November 25, 2014.
We will continue to watch this case for any interesting developments.