PASADENA, Calif.--(BUSINESS WIRE)--Calando Pharmaceuticals, a majority owned subsidiary of Arrowhead Research Corporation (NASDAQ:ARWR), announced today the issuance of Chinese Patent No. 28266625, entitled “Methods and compositions for therapeutic use of RNA interference.” The Chinese patent broadly covers all methods of using any RNA interference (‘RNAi’) construct formulated “in a supramolecular complex” to attenuate the expression of any target gene. Supramolecular complex formulations are any that are formed with any type of polymer. The patent also broadly covers all pharmaceutical compositions of matter containing RNAi constructs “adapted for pulmonary or nasal delivery” to the lungs.
