RE:RE:RE:RE:BioTuesdays Feature Article on Spectral Typically such pre-existing DA's have expiry dates, or performance requirements (ie minimums).
Often they are not exclusive.
Even so, it could take years for someone like CG/Vantive to assemble global rights if preexisting DA's ( eg Estor) must be honoured.
The crown jewel is the lucrative US market followed by perhaps China and then Europe.
MM