Patent Expiration Tracker - Oncology By Mukta Period: Jan 1, 2011 to Jan 1, 2016 Oncology Tracker Apr 1, 2011 Femara (Breast) Apr 1, 2011 Aromasin (Breast) Mar 2, 2013 Zometa (Skeletal) Jun 4, 2014 Xeloda (breast, colorectal) Jul 4, 2015 Gleevec (leukemia)