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This paper offers a first-look legal analysis of the draft version 3 of the GNU General Public License, and will also look at the debate that it has generated in the Free and Open Source community. The paper will answer the following vital questions: Is the GPL v3 different in any fundamental way from GPL v2? What are the main differences? What will be the impact of the new GPL to the problem of software patents? Is there an incompatibility problem with previous versions of the licence? How does it compare with other existing licences?

This paper will concentrate on presenting a legal analysis of two of the main challenges to open source software: SCO’s litigation and software patents. The paper discusses the validity of such challenges, their possible impact to the future of open source software, and the possible legal defences used against them.