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Patents and Open Source Software: New Issues Raised in the GNU General Public License v3.0

By Paul A. Ragusa and Edward R. Tempesta
January 31, 2008

Although procuring patent protection directed to computer software is now common, various groups have continued to be critical of software patents and look for ways to restrict or curtail their use. One such group of critics may be loosely referred to as the 'Open Source Software' movement. At the center of the Open Source Software movement is the Free Software Foundation ('FSF'), founded and led by Richard Stallman, a computer programmer. The FSF is a sponsor of the GNU General Public License ('GPL'), a popular Open Source Software license. Version 3.0 of the GPL, published on June 29, 2007, contains several new provisions regarding patents prompted by a recent agreement between Microsoft and Novell.

Overview of Open Source Software

Open Source Software licenses are intended to protect the so-called 'four freedoms' of free software ' freedom to use, distribute, modify, and distribute modified versions of the software. Ideally, Open Source software is created using 'open development' practices wherein many individuals contribute their time and computer code to the final form of the software. The resulting product is shared freely with others, who may in turn further modify and distribute the software. But, despite the fact that everyone contributes freely to the development of the software, and the software is shared without charge, Open Source Software is not in the public domain. The software is licensed under a copyright model. There are many such licenses, all with different requirements, although only a small number of licenses are widely used. One widely used license is the GNU General Public License, or GPL.

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