“The Sliding Windows patents cover a novel data structure—a ‘background image of a stationary map’—that allows users to navigate large images on a smartphone by moving the phone itself. This data structure is required by the patents’ claims, emphasized as the key to the invention throughout the patents’ specifications, and was the explicit basis on which the PTAB relied to distinguish the patents over prior art. In ruling that the patents were invalid under 35 U.S.C § 101 for claiming an abstract idea, however, the court below did not consider this claimed data structure, excluded this express requirement from the patent claims from the court’s characterization of what the claims were ‘directed to,’ and refused to consider the fact that because this claim limitation distinguished prior art, the Sliding Windows patents did not risk preemption of any abstract idea.”
“The questions presented are:”