A Study of AP-CD/LD in Fluctuating Parkinson's Disease Patients Who Completed IN 11 004

The purpose of this study is to allow evaluation of long-term clinical effect and safety outcome of treatment with AP-CD/LD, as well as to allow patients to benefit from extended treatment duration with AP-CD/LD after they have successfully completed the Phase 3 core study IN 11 004 ('core study', a phase III, multicenter, randomized, double-blind, double-dummy, active-controlled Phase 3 study to assess the safety and efficacy of AP CD/LD versus IR CD/LD in fluctuating PD patients).