
Arrowhead Pharmaceuticals Files Suit Against Ionis Pharmaceuticals Over Patent Dispute on Investigational Drug Plozasiran

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Arrowhead Pharmaceuticals Inc. has filed a lawsuit against Ionis Pharmaceuticals Inc. in the U.S. District Court for Delaware, seeking to declare Ionis’s U.S. Patent No. 9,593,333 invalid and asserting that its investigational drug plozasiran does not infringe on this patent. This action follows Ionis's threats of litigation over alleged patent infringement, which Arrowhead claims are unfounded. Arrowhead is committed to developing new treatments for familial chylomicronemia syndrome and plans to defend its position vigorously in court.
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