As we reported here, Momenta is appealing a PTAB decision upholding the patentability of BMS’s U.S. Patent No. 8,476,239 (“the ’239 patent”), which relate to BMS’s Orencia® (abatacept) product. Momenta has not yet filed an aBLA for its abatacept biosimilar candidate, M834, so one of the key issues on appeal is whether Momenta has Article III standing…