Guardion® Receives approval from USPTO for expanded claims for its Proprietary Medical Device, the MAPCAT SF

San Diego, California, Oct. 23, 2019 (GLOBE NEWSWIRE) -- Guardion Health Sciences, Inc. (Guardion or the Company) (Nasdaq: GHSI) announced that it has received approval from the USPTO for additional claims reflected in a new patent for its proprietary medical device, the MapcatSF.