• Federal Circuit Clarifies Written Description Standard
  • August 27, 2010
  • Law Firm: Banner Witcoff Ltd. - Washington Office
  • On March 22, 2010, the U.S. Court of Appeals for the Federal Circuit issued its en banc decision in Ariad v. Eli Lilly, reaffirming that 35 U.S.C. § 112, ¶1 contains a written description requirement separate from an enablement requirement. The court ruled that claims to a method of treating diseases by regulating a protein in human cells were invalid for lack of written description.