Asset Marketing Systems, Inc. v. Gagnon
542 F.3d 748 (9th Cir. 2008), cert. denied, 129 S. Ct. 2442 (2009)
The parties in this case fought over who had rights to the source code for the software that Mister Computer created for Asset Marketing Systems. The source code the program that the computer runs, but it is readable and writable by humans.