StocksMediumUpdated•Originally published 30 September 2026•Updated 30 September 2026•
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Liquidia Shares Plunge Following Adverse Patent Ruling in United Therapeutics Dispute

Key Facts

1Liquidia shares dropped significantly following a court ruling in a patent dispute with United Therapeutics.

Liquidia Corporation shares plummeted 48% and saw a surge in options activity following a court ruling in a patent dispute with United Therapeutics. Reuters reported that Judge Richard G. Andrews denied Liquidia's motion to strike, a decision that triggered a massive sell-off in the stock.

LQDA closed at $70.69 on September 29, 2026, as the legal setback weakened its competitive outlook. Meanwhile, United Therapeutics (UTHR) shares closed at $481.47 on September 29, 2026.