Infinity Computer Products, Inc. v. Oki Data Americas, Inc., No. 20-1189 (Fed. Cir. 2021)Annotate this Case
The Infinity patents share a specification and involve using a fax machine as a printer or scanner for a personal computer. The indefiniteness issues revolve around the connection between the fax machine and the computer, termed a “passive link.” In a suit alleging that Oki infringed the patents, the district court found the patent claims indefinite.
The Federal Circuit affirmed. Infinity has taken materially inconsistent positions regarding the extent of the claimed “passive link”— specifically, whether it ends at the I/O bus inside the computer or merely at the computer’s port; the endpoint of “passive link” is not reasonably certain and the term is indefinite. Because there is no reasonable certainty about where the “passive link” ends, there also cannot be reasonable certainty about where the “computer” begins.