United Therapeutics (NASDAQ:UTHR) has filed litigation in a Delaware court against Liquidia Technologies (NASDAQ:LQDA) in response to the latter's U.S. marketing application seeking approval of LIQ861, a dry powder inhalation formulation of treprostinil.
The lawsuit claims LIQ861 infringes on U.S. Patent No. 10,716,793 related to Tyvaso (treprostinil) Inhalation Solution.
The action triggers an automatic 30-month stay on FDA approval of LIQ861 to allow time for the matter to be adjudicated.























