Open-label, Randomized, Active-controlled Study of LEV Used as Monotherapy in Patients With Partial-Onset Seizures

Inclusion Criteria: * Subject is of Chinese origin and ≥ 16 years of age * Subject is newly or recently diagnosed with Epilepsy, having experienced unprovoked Partial-Onset Seizures (POS) * Subject has experienced at least 2 unprovoked seizures in the year preceding randomization, of which at least 1 unprovoked seizure occurred in the 3 months preceding randomization * Subject has had an Electroencephalogram (EEG) and a brain Computed Tomography (CT) scan or brain Magnetic Resonance Imaging (MRI) scan consistent with a diagnosis of Epilepsy with POS Exclusion Criteria: * Subject tests positive for human leukocyte antigen major histocompatibility complex, class I,B (HLA-B)\* 1502 allele * Subject has a history or presence of seizures of other types than Partial-Onset Seizures (POS) * Subject has only experienced type IA nonmotor seizures * Subject has a history or presence of seizures occurring only in clustered patterns * Subject has a history of clinical or Electroencephalogram (EEG) findings suggestive of Idiopathic Generalized Epilepsy prior to randomization * Subject has current or previous diagnosis of pseudoseizures, conversion disorders, or other nonepileptic ictal events that could be confused with seizures * Subject has a history of Status Epilepticus