Interactive Graphic Solutions LLC (IGS), as exclusive licensee of the asserted patents, has sued Microsoft (6:21-cv-00462) over the provision of operating systems supporting RemoteFX (e.g., Windows Server, Windows 7, Windows 8, Windows 10, etc.). The complaint targets certain RemoteFX features related to GPU-optimized Azure virtualization, full-motion video within virtualized applications, graphical compression, and remote GUI rendering. The development work for the family of eight asserted patents was conducted by their current owner T5 Labs (not named as a plaintiff), which has characterized the assets as fundamental to “cloud gaming”. IGS recounts a history of alleged interactions between T5 Labs founder Graham Clemie and the founder of Calista Technologies, a company that Microsoft later acquired.