"For decades, almost no one challenged the General Public License in legal matters. In fact, no one has even dared to try to break it in court. That record remains unsullied as the biggest company to date--Verizon--that had been accused of a GPL violation opted to settle out of court.
"The Software Freedom Law Center filed a copyright infringement lawsuit on Dec. 6 against Verizon Communications on behalf of its clients, the two principal developers of BusyBox..."