VistaGen Therapeutics receives notice of allowance from USPTO for PH10 patentVistaGen Therapeutics announced that the U.S. Patent and Trademark Office, or USPTO, has provided a notice of allowance for a patent related to methods of treating depression with PH10, VistaGen's investigational new generation CNS nasal spray in Phase 2 development for major depressive disorder. Counterpart foreign patents have already issued in Europe, Japan and several other countries. In a small exploratory Phase 2a clinical study, at microgram doses, PH10 nasal spray was observed to have rapid-onset antidepressant effects, without systemic exposure, psychological side effects or safety concerns. |