ebe7c9a4_ource_Licenses___e1ven_dot_com__Patent_Protection
[License] Gnu GPL 3 [Attribution Required] Include in Source code [Anti-Endorsement] Various options available per project [Copyleft] Strong [Applies to web apps] No [Notes] In 2007, the FSF updated the GPL to version 3 to add explicit patent protection, and a provision to prevent “tivoization”, which is when software is free, but only used on locked down hardware. Many GPL2 licenses include a line allowing them to be dual-licensed under the GPL3. [Patent Protection] 
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Comparison of Open Source Licenses | e1ven dot com
Patent Protection