A Placebo-controlled Study of Levetiracetam In Children (1mo to 4yrs of Age) With Partial Onset Seizures.

Inclusion Criteria:

- Pediatric patients from 1 month to less than 4 years of age

- Pediatric patients diagnosed with refractory partial onset seizures, on a stable
regimen of one to two other anti-epileptic drugs and at least 2 partial onset
seizures per week in the two weeks prior to screening

- Patients must have two partial onset seizures (with corresponding clinical event)
during the 48-hour video EEG at screening

Exclusion Criteria:

- A ketogenic diet

- Previous exposure to levetiracetam

- Seizures too close together to count accurately

- Treatable seizure etiology

- Current diagnosis of Lennox-Gastaut Syndrome or epilepsy secondary to a progressing
cerebral disease

- Diagnosis of a terminal illness