IP Law Daily, PATENT—Fed. Cir.: Licensing entity’s wireless system patent survives Apple’s invalidity challenges, (Dec 19, 2025)

By Ravindra Kumar Singh, B.L.

Substantial evidence supported the PTAB’s conclusion that the prior art failed to disclose the distinct functionalities of the patent at issue.

In a non-precedential disposition, the U.S. Court of Appeals for the Federal Circuit affirmed the Patent Trial and Appeal Board’s (PTAB) ruling in an inter partes review (IPR) filed by Apple Inc. The IPR decision preserved the validity of multiple claims of a licensing entity’s wireless system patent. The court found that Apple could not demonstrate the asserted claims unpatentable as obvious over the cited prior art. Further, the appellate court upheld the PTAB’s interpretation that the patent required “server” and “network switch box” components as logically distinct, a construction Apple itself had advanced during the IPR (Apple Inc. v. Smart Mobile Technologies LLC, No. 24-1624 (Fed. Cir. Dec. 19, 2025)).

Background. The appellant, Apple Inc., is a global consumer electronics and software company. The appellee, Smart Mobile Technologies LLC, is a non-practicing entity. The patent at issue, U.S. Patent No. 8,982,863 (the ’863 patent), is titled “System and Method for Controlling IP-Based Wireless Devices.” Its claims cover wireless communication systems incorporating (i) IP-enabled portable devices or cellular phones with multiple antennas and transmit/receive units; (ii) a first server connected to an IP-enabled network and configured with a controller for managing multiple network devices; and (iii) a network switch box, with ports, configured to manage data packet transmission between at least two networks.

Apple filed its IPR petition challenging claims 1–12, 14, 19, and 24 of the ’863 patent under 35 U.S.C. § 103, alleging obviousness over the Ahopelto reference and additional prior art. Apple argued that Ahopelto’s GPRS Gateway Support Node (GGSN) disclosed both a “server” and a “network switch box” by virtue of separate logical functionalities. Smart Mobile responded that Apple failed to prove these functions were logically distinct. The PTAB sided with Smart Mobile, concluding that Apple had not established that Ahopelto taught separate and distinct components as required under the patent claims. Apple appealed.

Claim construction. The Federal Circuit held that Apple was bound by its consistent position before the PTAB that the claimed “server” and “network switch box” were logically separate entities. Citing Apple’s briefing and expert declarations, the court found that the company’s arguments assumed that Ahopelto disclosed two logically distinct functions. For instance, Apple’s expert had testified that a person of skill in the art would recognize “server” and “routing” functionalities as implemented in separate logical components. Apple also admitted during oral argument that “one entity can have multiple different logical elements within it.”

The court concluded that the PTAB appropriately construed the claims as requiring logically distinct server and routing components. It rejected Apple’s argument that this interpretation was unworkable in the context of software inventions, finding that Apple had forfeited this theory by failing to present it below.

Obviousness. On the issue of obviousness, the Federal Circuit reviewed the PTAB’s factual findings for substantial evidence and its legal conclusions de novo. Apple argued that even if logical separation was required, Ahopelto’s GGSN disclosed both functionalities as distinct. It further claimed that the PTAB erred by demanding verbatim disclosures or architectural diagrams, and by undervaluing expert testimony.

The Federal Circuit found these contentions unavailing. The court explained that the PTAB undertook a detailed three-pronged analysis: (i) reviewing Ahopelto’s disclosures; (ii) examining expert evidence; and (iii) evaluating additional references. The Board determined that Ahopelto described a unified routing procedure encompassing all packet-forwarding functionality, undermining Apple’s attempt to isolate distinct “server” and “network switch box” roles within the GGSN. Specifically, Ahopelto taught a step of forwarding packets based on protocol type, which Apple equated with “server” functionality, but this was presented as a single routing process rather than separate components.

Expert testimony. Apple’s expert, Dr. Jensen, had opined that different functionalities within GGSNs were logically separate, but the Board found his testimony unsupported by the cited art. The court noted that the PTAB reasonably gave “little weight” to Dr. Jensen’s opinion due to the lack of corroborating disclosures and because he failed to distinguish the overlapping nature of the functionalities. In contrast, Smart Mobile’s expert, Dr. Cooklev, persuasively testified that no clear separation of roles existed in Ahopelto. The Board credited this testimony and found that a person of ordinary skill would not interpret Ahopelto as teaching distinct components.

Additional references. Apple pointed to other prior art references to emphasize its expert’s claims about industry understanding of logical separation. However, the court found that Apple had not argued these references as part of a modification theory but only as background to support its interpretation of Ahopelto. Thus, the references could not cure the failure to demonstrate distinctness in the primary reference. The court concluded that the PTAB correctly found Apple’s arguments insufficient to establish a prima facie case of obviousness.

Thus, the Federal Circuit affirmed the PTAB’s ruling in its entirety, rejecting Apple’s challenges to both claim construction and the obviousness determination.

The Case is No. 24-1624.

Judge: Chen, R.

Attorneys: Angela M. Oliver (Haynes and Boone, LLP) for Apple Inc. Greer N. Shaw (Graves & Shaw LLP) for Smart Mobile Technologies LLC.

Companies: Apple Inc.; Smart Mobile Technologies LLC

Cases: Patent TechnologyInternet FedCirNews USPTO