---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-112420"
form_type: "8-K"
ticker: "LQDA"
cik: "0001819576"
company_name: "Liquidia Corp"
filed_at: "2026-09-30T21:27:08+00:00"
generated_at: "2026-10-12T14:11:17.753908+00:00"
event_type: "litigation"
sentiment: "negative"
materiality_score: 0.9
calibrated_materiality_score: 0.9
confidence: "high"
source: SEC EDGAR
---

# Liquidia says Delaware court ruled claims 1 and 14 of United Therapeutics' '327 patent valid and infringed

## Summary
- District Court for the District of Delaware found claims 1 and 14 of U.S. Patent No. 11,826,327 valid and infringed by Liquidia's YUTREPIA; remaining asserted claims were held invalid
- Parties must submit a proposed form of judgment specifying remedies within one week; United Therapeutics (UTHR) has sought injunctive relief restricting YUTREPIA's market availability
- CEO Roger Jeffs said Liquidia disagrees and will pursue all appellate options; the company plans an NDA supplement to remove the PH-ILD indication from YUTREPIA's label
- Liquidia said it cannot reasonably estimate the range of outcomes or financial exposure; remedies could range from removing the PH-ILD indication to broader restrictions on product availability
- Liquidia (LQDA) trades on Nasdaq; YUTREPIA was approved in 2025 for PAH and PH-ILD, and the press release was filed as Exhibit 99.1

## SEC filing metadata
- accession: 0001104659-26-112420
- form_type: 8-K
- ticker: LQDA
- cik: 0001819576
- company_name: Liquidia Corp
- filed_at: 2026-09-30T21:27:08+00:00
- event_type: litigation
- sentiment: negative
- materiality_score: 0.9
- calibrated_materiality_score: 0.9
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1819576/000110465926112420/0001104659-26-112420-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1819576/000110465926112420/tm2626740d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-112420
- JSON: https://secwatch.observer/filing/0001104659-26-112420.json
- Plain text: https://secwatch.observer/filing/0001104659-26-112420.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.