SNGX - Soligenix nabs patent in U.S. protecting Rivax; shares up 14% premarket February, 11 2019 08:42 AM Soligenix Inc. Soligenix (NASDAQ:SNGX) has received a notice of allowance for a new U.S. patent protecting its ricin toxin vaccine, RiVax. More news on: Soligenix, Inc., Healthcare stocks news, Stocks on the move, Read more ...