It appears as though Discovery is not asking for the process to be stopped they just want their share = higher cost for books from
any ebookstore that uses DMR style encryption that infringes on their patent. Amazon is the logical first target due to deep pockets.
I can't help but believe that this is going to cause the price of all DMR encrypted ebooks to rise assuming the suit is upheld. Whether this impacts DMR free ebook prices remains to be seen.