BrianWCarver writes "Despite earlier concerns reported on Slashdot that the GPL might be particularly difficult to enforce in Germany, that country's courts now hold the distinction of having enforced it twice. The first enforcement came in 2004 when Harald Welte of the netfilter/iptables core team sought to enjoin Sitecom from distributing its WL-122 router, which used netfilter's GPL'd code, without also providing the source code and a copy of the GPL, as that license requires. The Munich Court granted Welte a preliminary injunction and then upheld that injunction (Court's decision in English pdf) and now Sitecom provides the source code from their website. Welte, who also now runs gpl-violations.org to track GPL violations, and who personally handed over warning letters at Cebit to companies not in compliance with the GPL, reported on his blog today that he has obtained a new preliminary injunction enforcing the GPL, this time against Fortinet for distributing their firewall products (FortiGate and FortiWiFi) that include GPL'd code while Fortinet refuses to release the source. Congratulations again to Welte and his attorneys!"