https://bugs.winehq.org/show_bug.cgi?id=38274
--- Comment #19 from Sergey Isakov isakov-sl@bk.ru --- Nvidia Texture Tools has a license on the patent. But implementing their files into other project will lose the license. Only products created by Nvidia itself can use this patent. Again, I will insist that decompressing is free. Or wine project have to pay for the license.