One of the requirements of a valid patent is enablement. As set forth in 35 U.S.C. section 112, paragraph 1, a patent’s specification must contain “a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same.” The Court of Appeals for the Federal Circuit has explained that the enablement requirement is met “when one skilled in the art, after reading the specification, could practice the claimed invention without undue experimentation.” AK Steel Corp. v. Sollac, 344 F.3d. 1234, 1244 (Fed. Cir. 2003). Although anticipation or obviousness based on the prior art is a more frequently asserted basis for invalidating a patent in patent infringement litigation, the Federal Circuit’s decision in Sitrick v. Dreamworks, LLC, 516 F.3d. 993 (Feb. 1, 2008) suggests that lack of enablement may be becoming a far more powerful tool.
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