The interesting thing about this case is that the infringer was sued by a company that used their software, not by the copyright holder.
I'm not sure I'm happy about that, given the way a few rabid free software fanatics have acted in the past. In particular, I remember the QuakeWorld GPL fiasco, where zealots in the community took it upon themselves to harass the leader of an open source project, rather than giving a chance for a much more level-headed John Carmack to sort things out.
This doesn't make sense at all -- the GPL is just a conditional disclaimer of copyright -- it doesn't even pretend to be a contract.
Only the copyright holder has standing to make a civil infringement suit under standard international copyright law. The copyright granter (national government) has the sole ability to initiate a criminal case, and most signatories only have criminal statutes for commercial piracy. France has draconian 'moral rights', but they are not transferable even in 'work for hire'.
> the GPL is just a conditional disclaimer of copyright -- it doesn't even pretend to be a contract.
Whatever else the GPL does, it absolutely does not disclaim copyright. It maintains it, but gives you a license, if you follow a certain set of conditions.
It's a license which confers certain rights to the recipient of the software. In this case it appears the the recipient successfully sued to enforce those rights.
In France this could have been a serious hurdle to overcome, but instead it seems as though that never even entered the picture.