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Storer v. Clark

This patent interference contest involves methods of treating hepatitis C by administering compounds having a specific chemical and stereochemical structure, based on the following foundation formula of a five-membered ring having the fluorine substituent in the 2´(down) position:


Storer Br. at 8. The priority decision was based on enablement of this product. The interference was declared between an issued patent (Storer et al.) and a pending application (Clark), both of which were filed before the effective date of the America Invents Act, the statute that abolished the first-to-invent interference rule in favor of a first-to-file rule. By the terms of the Act, § 3(n)(2), the prior, first-to-invent, law applies to this interference.

To establish priority, Storer relied on the disclosure in the provisional specification from which priority was claimed for conception and constructive reduction to practice. In its joint decision on Clark’s motion to deny Storer the benefit of the provisional application and on Clark’s motion to invalidate Storer’s claims on the grounds of lack of enablement and written description,1 the Patent Trial and Appeal Board (PTAB or “Board”) held that Storer’s provisional application was not enabling for the count of the interference, and on that ground the PTAB entered judgment granting priority to Clark.2 Storer appeals that judgment and the underlying decision on Clark’s motions.

We take note that Storer initially filed in the District of Delaware, seeking review of the Board’s decision under 35 U.S.C. § 146. The district court dismissed the case, Idenix Pharmaceuticals. LLC v. Gilead Pharmasset LLC, 2016 WL 6804915, at *1 (D. Del. Nov. 16, 2016), based on this court’s ruling in Biogen MA, Inc. v. Japanese Foundation for Cancer Research, 785 F.3d 648 (Fed. Cir. 2015), that the America Invents Act eliminated the option of district court review under Section 146 for interferences declared after September 15, 2012. Although Storer says that Biogen was incorrectly decided, that decision is binding on this panel. Storer’s appeal of the district court’s dismissal has been stayed pending the outcome of this appeal. Order, Idenix Pharm. LLC v. Gilead Pharmasset LLC, No. 17-1369 (Fed. Cir. Feb. 16, 2017).

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