5[美]Thomas K. Landry, Constitutional Invention. "A Patent Perspective", 25 Rutgers Law Journal 67.
6[美]Donald S. Chisum: "Chisum on Patents", M. Bender, 2007: § 18. 02.
7[美]Wagner, R. P. " Reconsidering Estoppel: Patent Administration and the Failure of Festo", University of PennsylvaniaLaw Review, 2002,151:181.
8Leggett v. Avery, 101U.S. 256, 259-60.
9[美]Alexander, J. Cabining the Doctrine of Equivalents in Festo: a Historical Perspective on the Relationship between the Doctrine of Equivalents and Prosecution History Estoppel, American University Law Review, 2002, 51:569.
10Sergeant v. Hall Safe & Lock Co., 114 U.S. 63, 86.
