$LQDA I’m still holding. “Liquidia Technologies Announces That U.S. Patent Trial And Appeal Board Has Ruled Against United Therapeutics On Tyvaso Patents” 10/14/20, 9:27 AM October 14, 2020 09:27 AM ET (BZ Newswire) -- News RESEARCH TRIANGLE PARK, N.C., Oct. 14, 2020 (GLOBE NEWSWIRE) -- Liquidia Technologies, Inc. (NASDAQ:LQDA), a late-stage clinical biopharmaceutical company focused on the development and commercialization of novel products using its proprietary PRINT® technology, today announced that the U.S. Patent Trial and Appeal Board (PTAB) has instituted inter partes review (IPR) against U.S. Patent No. 9,604,901 (‘901) and concurrently denied institution on 9,593,066 (‘066), both owned by United Therapeutics Corporation (UTC) and listed in the Orange Book for Tyvaso® (treprostinil).