Section 2.1.3 does not mean AMRN had any involvement in the HLS/PFE deal - co-promotion is not the same as a sub-license, the latter is a deal where the licensee sells/distributes the physical product and retains all revenues. It's akin sub-letting an apt - if you can rent it to someone else for more than you are paying the owner you get to pocket the diff - assuming the lease doesn't prevent sub-letting, of course.. Someone posted an example of a biotech doing this a few days ago - they licensed a drug to develop from a BP for low single digit royalties if it ever got approved (prostate cancer drug), then they subsequently partnered with another BP after successful trials in which they would share profits at 50:50 plus milestone payments - the BP that gave them the initial license isn't entitled to any more than the original royalty rate.