We have covered Pfizer’s development of biosimilars of Genentech’s Avastin® (bevacizumab) and Herceptin® (trastuzumab) and its related IPR filings IPR2016-01771 and IPR2016-01837. Following written decisions invalidating those two patents, Genentech appealed and challenged the constitutionality of subjecting patents that issued before the America Invents Act (AIA) was enacted in 2011…