To Evaluate the Long-term Safety of (R,R)-Formoterol in Subjects With COPD

This was a multicenter, open-label, randomized, active controlled, parallel group chronic safety study of arformoterol 50 mcg once daily over a period of 12 months in subjects with COPD. This study was previously posted by Sepracor Inc. In October 2009, Sepracor Inc. was acquired by Dainippon Sumitomo Pharma., and in October 2010, Sepracor Inc's name was changed to Sunovion Pharmaceuticals Inc.