"The attribution and modification transparency requirements directly serve to drive traffic to the open source incubation page and to inform downstream users of the project, which is a significant economic goal of the copyright holder that the law will enforce.”
"Open source licensing has become a widely used method of creative collaboration that serves to advance the arts and sciences in a manner and at a pace few could have imagined just a few decades ago," Judge White said.
"Unlike the lower court, the appeals court seemed to understand that reciprocity lay at the heart of free software licenses. Just as traditional software firms thrive on the exchange of code for money, free software projects thrive on the exchange of code for code."
'I am very proud to report today that the Court of Appeals for the Federal Circuit (THE "IP" court in the US) has upheld a free (ok, they call them "open source") copyright license, explicitly pointing to the work of Creative Commons and others. ... In non-technical terms, the Court has held that free licenses such as the CC licenses set conditions (rather than covenants) on the use of copyrighted work. When you violate the condition, the license disappears, meaning you're simply a copyright infringer. This is the theory of the GPL and all CC licenses. Put precisely, whether or not they are also contracts, they are copyright licenses which expire if you fail to abide by the terms of the license. '