IPR of pre-AIA patent not an unconstitutional taking
In a notable, albeit not surprising, U.S. Federal Circuit decision today, the panel in Celgene Corp. v. Peter confirmed that an inter partes review finding of unpatentability of a pre-AIA patent is not an unconstitutional taking. (slip op. 2018-1171 (July 30, 2019)).
Noting an opening in the recent Supreme Court decision in Oil States, the Federal Circuit deemed the circumstances exceptional as their basis for review of an issue not before the PTAB in the underlying proceeding. The panel reasoned that the proceeding being “curative” in nature, and the approximately forty year period of time in which PTAB proceedings have existed subjecting granted patents to potential cancellations for that duration weighted against any unconstitutionality.
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