"Although that is correct so far as the current format version is concerned, acquiring some rights may still be a wise move for DAZ as it would allow them to further extend the file format to add new features, and use the extended format as 'native' in their own app without concerns regarding Intellectual Property rights." If I am not mistaken, DAZ could do this anyway using DAZ Studio's file formats. Importing/Exporting Poser files and adding on features only available in DAZ Studio would not, AFAIK, violate any IP rights; since it will be code only decipherable by their own software. This may make the new files incompatible with Poser, but the addition of features could be a per user decision with, possibly, the ability to strip the additional code out for Poser compatibility.