An Open-Label Study of Intramuscular Olanzapine Depot in Patients With Schizophrenia or Schizoaffective Disorder

This is a long-term, open-label clinical study designed to enable longer-term treatment of patients completing other clinical studies with intramuscular olanzapine depot. Key objectives of the study are to: * Determine how well intramuscular (IM) olanzapine depot works during long-term treatment, * Evaluate the safety and tolerability of IM olanzapine depot during long-term treatment, * Determine the blood levels of IM olanzapine depot in patients during long-term treatment