IP Law Daily, PATENT—Fed. Cir.: Patent for advanced mobile communication technologies properly found nonobvious, (May 9, 2024)

By Saurabh Kashyap, B.A., LL.B., LL.M.

PTAB had correctly interpreted the patent claims, and prior art did not cover innovations under the patent.

The U.S. Court of Appeals for the Federal Circuit affirmed the Patent Trial and Appeal Board’s (PTAB) decision in an inter partes review finding that petitioner Quectel Wireless Solutions Co. Ltd failed to establish that claims 11–17 of the U.S. Patent No. 7,089,028 (the ’028 patent) owned by Koninklijke Philips N.V. were unpatentable as obvious (Quectel Wireless Solutions Co. Ltd. v. Koninklijke Philips N.V. , No. 23-1155 (Fed. Cir. May 9, 2024)).

Background. The appellant, Quectel Wireless Solutions Co. Ltd., is a prominent provider of wireless communication modules and solutions, primarily in developing and commercializing advanced cellular and Global Navigation Satellite System (GNSS) modules. The appellee, Koninklijke Philips N.V. (Philips), is a diversified technology company known for its wide-ranging innovations in healthcare, consumer lifestyle, and lighting products.

Philips owns the asserted U.S. Patent No. 7,089,028 (the ’028 patent), which pertains to sophisticated mobile communication systems specifically designed to regulate the power of radio communications between mobile stations (like smartphones) and immobile base stations (such as cell towers), enhancing the reliability and efficiency of data transmission.

Quectel challenged the patentability of claims 11–17 of the ’028 patent through an inter partes review (IPR) before the Patent Trial and Appeal Board (PTAB). Quectel contended that these claims were obvious in light of prior art. However, the PTAB held in favor of Philips, finding that Quectel had not demonstrated by a preponderance of the evidence that the challenged claims were unpatentable. Subsequently, Quectel appealed this decision to the appellate court, seeking a judicial review of the PTAB’s conclusions.

Review standards. The appellate court highlighted the standard of review it applied: de novo review for legal issues (such as claim construction) and substantial evidence for factual determinations made by the PTAB.

Claim construction. The appellate court focused on the construction of the patent claim terms, specifically the term "initially transmitted" in claim 11 of the ’208 patent. It assessed whether "initially transmitted" referred to the first-ever transmission or just the first transmission in a particular sequence after an acknowledgment.

Quectel argued for a narrower interpretation of the term "initially transmitted," whereas the PTAB had interpreted it broadly and ruled that prior art did cover the same concept, thereby supporting the novelty and non-obviousness of the patent. The court reviewed the PTAB's claim construction de novo, relying solely on the intrinsic evidence (the patent itself and its prosecution history). The court agreed with the PTAB's interpretation that "initially transmitted" refers to the first transmission of control information on the specific control channels after the secondary station receives an acknowledgment.

Intrinsic and extrinsic evidence: The court emphasized the importance of intrinsic evidence over extrinsic evidence. The PTAB’s findings and the appellate court's review focused on the patent's specifications and the original claim language, which supported their construction of "initially transmitted." The court noted that extrinsic evidence, such as expert testimony, was less critical in this instance because the intrinsic record was clear.

Argument and evidence consideration. The court also addressed procedural and argumentative aspects, such as Quectel’s failure to introduce certain arguments earlier in the proceedings. Quectel attempted to introduce a new interpretation of the patent claims based on the patent abstract, which the PTAB did not consider. The court declined to consider this late argument because it was not raised at the appropriate stage, emphasizing the procedural requirement that arguments must be raised in a timely manner.

Ultimately, the Federal Circuit agreed with the PTAB’s conclusion that the prior art references did not teach or suggest the specific claim limitations as constructed. Therefore, the claims were not obvious. The PTAB’s decision was affirmed.

The Case is No. 23-1155.

Judge: Lourie, A.

Attorneys: Robert Courtney (Fish & Richardson P.C) for Quectel Wireless Solutions Co Ltd. George Christopher Beck (Foley & Lardner LLP) for Koninklijke Philips N.V.

Companies: Quectel Wireless Solutions Co. Ltd.; Koninklijke Philips N.V.

Cases: Patent FedCirNews USPTO