Orexo AB v. Actavis Elizabeth, LLC

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Orexo’s 330 Patent, entitled “Abuse-Resistant Pharmaceutical Composition for the Treatment of Opioid Dependence,” claims a product having the brand name Zubsolv®, approved by the FDA for treatment of opioid dependence. Actavis filed an Abbreviated New Drug Application for a generic counterpart of Zubsolv, accompanied by a Paragraph IV certification, leading to Hatch-Waxman litigation under 21 U.S.C. 355(j) and 35 U.S.C. 271(e)(2)(A). The Federal Circuit reversed a finding of obviousness. The question is not whether the references separately taught components of the 330 Patent formulation, but whether the prior art suggested the selection and combination achieved by the 330 inventors. The district court erred in discounting the enhanced bioavailability in the 330 patent’s formulation as “a ‘difference in degree,’ not a difference in ‘kind.’” The clinical studies reported in the 330 Patent show 66% improved bioavailability. In the context of this invention, this is more than a trivial “degree.” View "Orexo AB v. Actavis Elizabeth, LLC" on Justia Law