Novell recently won a 7 year battle against the SCO Group over the copyright to UNIX source code. A jury in Utah found that Novell was the owner of the copyrights in question. Its a victory for open source software generally, because it was probably the most serious legal threat to development of Linux, an open source UNIX-like operating system. SCO had alleged that Linux infringed copyrights it held in UNIX. Though Novell’s offerings have changed over the years, currently it offers SUSE Linux and related software and services.
The blog Groklaw has been following this case in great detail over the years. There is an unbelievable amount of information there which illustrates how much work can go into litigating a case of this scale.