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Arrowhead Gets OK for Delivery Technology Patent


Arrowhead Research this week announced that it has received notice from the US Patent and Trademark Office that it will be issued a patent on its dynamic polyconjugate siRNA delivery technology.

Dynamic polyconjugates, or DPCs, are nanoparticles composed of an amphipathic polymer to which shielding agents such as polyethylene glycol, as well as targeting ligands, are reversibly attached, according to Arrowhead. The company acquired the technology when it bought Roche's RNA drug assets last year (GSN 10/27/2011).

According to Arrowhead, the USPTO said it will grant a patent on an application entitled “Compositions for Targeted Delivery of siRNA,” which covers compositions, methods, and uses for a new formulation of the DPCs.

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