Law professors recently filed an amicus brief in support of the Celgene’s petition for writ of certiorari to take up Celgene Corp v. Peter on appeal from the U.S. Court of Appeals for the Federal Circuit (CAFC). In Celgene the CAFC addressed the applicability of the Takings Clause of the Fifth Amendment to inter partes reviews (IPRs), holding “that the retroactive application of inter partes review (IPR) proceedings to pre-America Invents Act (AIA) patents is not an unconstitutional taking under the Fifth Amendment.”

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