Kiwi - I have been involved in drug patent challenges. I beleive that whether or not generic high purity EPA products violate the V patents depends on the wording AMRN used in the patents. The patents I have seen list a range of doses rather than a single dose (to cover themselves broadly). So, if the ARMN patents for V said "EPA between 80 - 100% pure, with less than 10% DHA", all high purity EPA currently sold as DS would violate the patents. I have not read the patents, so do not know if this is the case though.