Overview Open-label Extension Study to Evaluate the Safety of USL255 in Patients With Refractory Partial-onset Seizures Status: Completed Trial end date: 2014-05-01 Target enrollment: Participant gender: Summary The purpose of this study is to examine the safety of USL255 as adjunctive therapy in patients with refractory partial onset-seizures. Phase: Phase 3 Details Lead Sponsor: Upsher-Smith LaboratoriesTreatments: Topiramate