United Therapeutics Sues Liquidia To Block Tyvaso Competitor

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.

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