The U.S. Court of Appeals for the Federal Circuit (CAFC) today affirmed in a precedential decision the Patent Trial and Appeal Board’s (PTAB’s) finding that Moderna Therapeutics proved certain claims of Arbutus Biopharma Corporation’s mRNA delivery patent invalid as anticipated. U.S. Patent No. 9,404,127 is titled “Non-liposomal Systems for Nucleic Acid Delivery” and is directed to “an invention that provides stable nucleic acid-lipid particles (‘SNALP’) that have a non-lamellar structure and ‘comprise a nucleic acid . . . methods of making the SNALP, and methods of delivering and/or administering the SNALP.’” SNALP has a three-dimensional structure that is either a lamellar morphology or non-lamellar (pictured).

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