VistaGen Therapeutics Receives Hong Kong Patent for Methods of Production for AV-101

New Hong Kong patent complements counterpart patents previously issued in China, Europe and the U.S.

SOUTH SAN FRANCISCO, Calif., Nov. 29, 2018 (GLOBE NEWSWIRE) -- VistaGen Therapeutics (NASDAQ: VTGN), a clinical-stage biopharmaceutical company developing new generation medicines for central nervous system (CNS) diseases and disorders with high unmet need, today announced that the Hong Kong Patents Registry Intellectual Property Department has granted a patent related to certain methods of production for AV-101, VistaGen’s oral NMDA (N-methyl-D-aspartate) receptor glycine B antagonist in Phase 2 development for adjunctive treatment of major depressive disorder (MDD).

The new Hong Kong patent (No. 1218414) is the counterpart to previously issued  U.S. Patent No. 9,834,801, European Patent No. EP2970097, and Chinese Patent No. ZL201480023992.8 and will not expire until at least 2034.

Shawn Singh, Chief Executive Officer of VistaGen, stated, “Receiving this patent in Hong Kong, along with its counterpart patent in China, strengthens our commercial protection in two key markets in Asia and is another significant step forward in our global IP plan for AV-101.”

About VistaGen
VistaGen Therapeutics, Inc. is a clinical-stage biopharmaceutical company developing new generation medicines for multiple CNS diseases and disorders with high unmet need. For more information, please visit and connect with VistaGen on TwitterLinkedIn and Facebook.

About AV-101
AV-101 is an investigational, oral, NMDA (N-methyl-D-aspartate) receptor glycine B antagonist with the potential to be a treatment for multiple CNS indications with high unmet need. AV-101 is currently in Phase 2 clinical development in the United States for adjunctive treatment of MDD. The FDA has granted Fast Track designation for development of AV-101 as both a potential adjunctive treatment of MDD and as a non-opioid treatment for neuropathic pain.

Forward-Looking Statements 
This release contains various statements concerning VistaGen's future expectations, plans and prospects, including without limitation, our expectations regarding development and commercialization of our drug candidates, including AV-101 for adjunctive treatment of MDD and as a non-opioid treatment for neuropathic pain, as well as our intellectual property and commercial protection of AV-101, all of which constitute forward-looking statements for the purposes of the safe harbor provisions under the Private Securities Litigation Reform Act of 1995. These forward-looking statements are neither promises nor guarantees of future performance and are subject to a variety of risks and uncertainties, many of which are beyond our control, and may cause actual results to differ materially from those contemplated in these forward-looking statements. Among these risks is the possibility that (i) we may encounter unexpected adverse events in patients during our clinical development of any product candidate that cause us to discontinue further development, (ii) we may not be able to successfully demonstrate the safety and efficacy of our product candidates at each stage of clinical development, (iii) success in preclinical studies or in early-stage clinical trials may not be repeated or observed in ongoing or future studies, and ongoing or future preclinical and clinical results may not support further development of, or be sufficient to gain regulatory approval to market our drug candidates, (iv) decisions or actions of regulatory agencies may negatively affect the progress of, and our ability to proceed with, further clinical studies or to obtain marketing approval for our drug candidates, (v) we may not be able to obtain or maintain adequate intellectual property protection and other forms of marketing and data exclusivity for our product candidates, (vi) we may not have access to or be able to secure substantial additional capital to support our operations, including our ongoing clinical development activities, and (vii) we may encounter technical and other unexpected hurdles in the manufacturing and development of any of our product candidates. Certain other risks are more fully discussed in the section entitled "Risk Factors" in our most recent annual report on Form 10-K, and subsequent quarterly reports on Form 10-Q, as well as discussions of potential risks, uncertainties, and other important factors in our other filings with the Securities and Exchange Commission (SEC). Our SEC filings are available on the SEC's website at In addition, any forward-looking statements represent our views only as of the issuance of this release and should not be relied upon as representing our views as of any subsequent date. We explicitly disclaim any obligation to update any forward-looking statements.

Company Contact
Mark A. McPartland
VistaGen Therapeutics Inc.
Phone: +1 (650) 577-3600

Investor Contact
Valter Pinto / Allison Soss
KCSA Strategic Communications
Phone: +1 (212) 896-1254/+1 (212) 896-1267

Media Contact
Caitlin Kasunich / Lisa Lipson
KCSA Strategic Communications
Phone: +1 (212) 896-1241/+1 (508) 843-6428