There has been many arguments concerning the GPL, specifically whether it has legal bite or otherwise. It seems that we will soon find out, as a software company has now been taken to court for violating the GPL:
The SFLC (Software Freedom Law Center) announced on Sept. 20 that it had just filed the first ever U.S. copyright infringement lawsuit based on a violation of the GNU General Public License (GPL) on behalf of its clients. The group’s clients are the two principal developers of BusyBox. BusyBox is a small-footprint application that implements a lightweight set of standard Unix utilities. It is commonly used in embedded systems, and is open-source software licensed under the GPL version 2.
The developers of BusyBox came to the SFLC after trying to talk Monsoon into honoring the conditions of the GPLv2. Unsuccessful with this, the SFLC has filed suit on the developers’ behalf against Monsoon.