All Prior Art is a project attempting to algorithmically create and publicly publish all possible new prior art, thereby making the published concepts not patent-able. The concept is to democratize ideas, provide an impetus for change in the patent system, and to preempt patent trolls. The system works by pulling text from the entire database of US issued and published (un-approved) patents and creating prior art from the patent language. While most inventions generated will be nonsensical, the cost to computationally create and publish millions of ideas is nearly zero – which allows for a higher probability of possible valid prior art.
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The particular Creative Commons license was chosen to prevent commercial use of the text along with restricting derivatives, since the point of the prior art is to be publicly published unmodified (as it is to be a valid reference point)
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-The intent is not to prevent actual creative and innovative patents from being filed, it is to take the obvious and easily automated ideas out-of-play. If an idea is truly creative and innovative, a computer should have difficulty coming up with it.

Source: About – All Prior Art