Last Friday the Patent Trial and Appeal Board (PTAB) denied four Sandoz Inc. petitions for instituting inter partes review (IPR) of U.S. 8,455,524 (IPR2015-00005), U.S. 7,612,102 (IPR2015-00006), U.S. 7,659,290 (IPR2015-00007), and U.S. 7,659,291 B2...