The biosimilars market is rapidly evolving, with more than 450 biosimilar molecules in development worldwide, and many anticipated transfers of molecules in process around the globe. With US$85 billion of biopharmaceutical products coming off patent by 2020 (1), the driving force to develop biosimilars is strong. The market will be highly saturated, with dozens of biosimilars currently in development for each current blockbuster molecule. We know of 46 trastuzumab biosimilars and 39 rituximab biosimilars in development. Because the biosimilars market…