To Determine the Relationship Between Baseline Reversibility and the Efficacy of Indacaterol

Inclusion Criteria: * Diagnosis of COPD (moderate-to-severe as classified by the Global Initiative for Chronic Obstructive Lung Disease (GOLD) Guidelines, 2009) and: 1. Post-bronchodilator FEV1 \<80% and ≥30% of the predicted normal value 2. Post-bronchodilator FEV1/FVC (forced vital capacity) \<70% * Smoking history of at least 10 pack-years Exclusion Criteria: * Patients who have had a COPD exacerbation in the 6 weeks prior to screening * Patients who have had a respiratory tract infection within 4 weeks prior to screening * Patients with concomitant pulmonary disease * Patients with a history of asthma * Patients with diabetes Type I or uncontrolled diabetes Type II * Any patient with lung cancer or a history of lung cancer * Patients with a history of certain cardiovascular comorbid conditions Other protocol-defined inclusion/exclusion criteria may apply