24 April 2014 - Biotechnology company VistaGen Therapeutics (OTCQB:VSTA) disclosed on Wednesday that it has received a Notice of Allowance for its US Patent Application 12/836,275, entitled 'Cell populations enriched for endoderm cells'.

This Notice of Allowance was awarded by the US Patent and Trademark Office.

The company added that the expected patent will extend its intellectual property portfolio for pluripotent stem cell culture systems that produce human cells of the endoderm lineage, including liver, lung, pancreas, parathyroid and thyroid cells.

Following issuance, the company's new patent will complement US Patent Nos. 7,763,466, 8,512,957 and 8,143,009, each licensed exclusively from the Icahn School of Medicine at Mount Sinai in New York.