IP Law Daily, PATENT—Fed. Cir.: Invalidity affirmed in transmission decoding method patent dispute, (Jan 7, 2026)

By Kevin M. Finson, J.D.

Claims for a method for decoding transmission data were invalid due to being directed at an unpatentable abstract idea.

A patentee failed to show any error in a California district court decision invalidating its patent claims as being directed to an ineligible abstract idea grounds, the U.S. Court of Appeals for the Federal Circuit has held. The claims at issue simply concerned the receiving, manipulating, and decoding of data, which had long been held to be an unpatentable abstract idea (Technology in Ariscale, LLC v. Razer USA, Ltd., No. 2024-1657, (Fed. Cir. Jan. 6, 2026)).

Technology in Ariscale, LLC (Ariscale) was the owner of U.S. Patent No. 8,139,652 (the ’652 patent), which claimed a “computer-implemented method for decoding a transmission signal.” Ariscale brought suit for infringement against Razer USA, Ltd. (Razer). The district court entered judgment that claims 1 and 14 of the ’652 patent were invalid due to being directed at an abstract idea. Ariscale appealed.

Abstract idea. Ariscale argued that the district court erred on step one of the Alice test by characterizing the representative claim as being “directed to receiving, manipulating, and decoding data.” Ariscale’s proposed characterization was instead “combining and decoding repeatedly transmitted [downlink frame prefix (‘DFP’)] information.” The court found that the claim language did not support Ariscale’s limitation focusing on DFP information, and was instead applicable to both DFP information and other contexts. The court found that the trial court had properly determined the claims at issue were directed to the abstract idea of receiving, manipulating, and decoding data, rather than to a concrete improvement in technology.

Inventive concept. On step two of the Alice test, the Federal Circui found that Ariscale had not shown an inventive concept, as the only alleged inventive concept was the order of a “combining” step inserted between “deinterleaving” and “decoding” steps. The specification made clear that this was simply an arithmetical process implementing the abstract idea, and was therefore not sufficient to save patentability.

The Federal Circuit affirmed the decision of the district court.

The Case is No. 24-1657.

Judge: Cunningham, T.

Attorneys: Brian Fitzgerald (Broadview IP Law, PC) for Technology in Ariscale, LLC. Christopher Kao (Pillsbury Winthrop Shaw Pittman LLP) for Razer USA Ltd.

Companies: Technology In Ariscale, LLC; Razer USA Ltd.

Cases: Patent TechnologyInternet FedCirNews CaliforniaNews