Federal Circuit: Applicant Admitted Prior Art Cannot Provide a "Basis" for a Ground of Unpatentability in an IPR, But Can be Cited for Other Purposes Federal Circuit: After SAS, IPR Estoppel Extends to Prior-Art Grounds That Reasonably Could Have Been Raised in the Petition
Jeff Ginsberg and Ryan J. SheehanWhen Congress enacted the America Invents Act and created the inter partes review (IPR) proceeding, it limited an IPR petition to challenging patentability "only on a ground that could be raised under section 102 or 103 [i.e., anticipation and obviousness] and only on the basis of prior art consisting of patents or printed publications."
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