RE: IP Considerations2 Feb 2016 12:25
In the HZD website About Us/ Our Science/ Patents it states that they have licences awarded by (among others) Broad and Harvard, ERS Genomics and Caribou which are the main institutions/companies associated with Zhang, Charpentier and Doudna (the three major protagonists) respectively. So in answer to my own question, it seems that HZD has covered all bases.