I believe this section is mostly dealing with companies that create a library, patent it, then create a GPL3 app that uses said library without the intention of

I believe this section is mostly dealing with companies that create a library, patent it, then create a GPL3 app that uses said library without the intention of opening up the library. Looking at you NVIDIA :). The way I'm reading that is if you build a work that relies on a library covered under patent you must do one of the following: 1. Publish the library as some form of open source (no license specified) 2. Cede the patent to the public domain through some mechanism 3. Grant anyone creating software based on said library a license to the patent free of charge. As the MPEGLA owns the patent and is not shipping code #1 would not be available and #2 and #3 would not be applicable to a 3rd party developing code because they don't own the patent. IANAL but that seems to be the way that clause was intended.