Alnylam
I was looking at them about a year ago, thinking of investing when they would go public. It seemed, at the time, that they were heavy into cross-licensing, rather than having a pipeline developed in-house. Even though they had a lot of scientific heavyweights on board, it seemed that they had not originated much IP.
Please take the above with a grain of salt, since the opinion is dated.
BTW - for all you ConjuFans - They initiated a PII combo with Metformin. Still holding on to my shares - planning to add when they come to the NAZ
Bob