Sept 17 (Reuters) - Liquidia Corp :
* LIQUIDIA CORP: UNITED THERAPEUTICS FILED NEW CROSS-CLAIMS IN FDA SUIT AGAINST FDA, RE-ASSERTING CHALLENGE TO FDA'S ACCEPTANCE OF CO'S YUTREPIA NDA
* LIQUIDIA- INTENDS TO DEFEND ITS ABILITY TO LAUNCH YUTREPIA & TO DEFEND ITSELF AGAINST UNITED'S ALLEGATIONS
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(Reuters.Briefs@thomsonreuters.com)