For some projects it is already mandated in the grant agreement. I've heard that this will be extended to all project for Horizon 2020. I am also under the impr

For some projects it is already mandated in the grant agreement. I've heard that this will be extended to all project for Horizon 2020. I am also under the impression, that the EU protects researchers who post the full version of their papers on their websites even when the publisher does not permit it. I could be wrong on the latter. Certainly, there is always room for improvement.