Federal Circuit Dismisses Patent Owner’s Appeal for Lack of Final Judgment Under Rule 54(b)

The U.S. Court of Appeals for the Federal Circuit (CAFC) issued a precedential decision today in ParkerVision, Inc. v. Qualcomm Incorporated dismissing ParkerVision’s appeal from a judgment of non-infringement for lack of appellate jurisdiction. The CAFC determined that a partial final judgment entered under Federal Rule of Civil Procedure 54(b) was not final, since it resolved infringement of only some claims of a single patent. The CAFC also denied ParkerVision’s request to reassign the case to a different district judge on remand.

ParkerVision, Inc. filed a lawsuit against Qualcomm Incorporated and Qualcomm Atheros, Inc. in 2014 in the U.S. District Court for the Middle District of Florida, alleging infringement of U.S. Patent Nos. 7,218,907 and 6,091,940. The asserted claims included receiver claims directed to down-converting electromagnetic signals from high frequency to low frequency, and transmitter claims directed to up-converting from low frequency to high frequency. All asserted claims of the ‘907 patent are receiver claims, while the ‘940 patent includes receiver claims and transmitter claims.

In 2024, the CAFC previously vacated a grant of summary judgment of non-infringement and remanded in ParkerVision, Inc. v. Qualcomm Inc. The court held that the district court had improperly applied collateral estoppel based on an earlier appeal involving a different patent claim.

On remand, ParkerVision and Qualcomm stipulated to non-infringement of the receiver claims of the ‘907 and ‘940 patents, and the district court granted partial summary judgment of non-infringement on those claims. That ruling resolved every asserted claim of the ‘907 patent, but infringement of the ‘940 patent’s transmitter claims remained unresolved. On ParkerVision’s motion, which Qualcomm opposed, the district court entered final judgment on the receiver claims under Rule 54(b) and severed and stayed the transmitter claims pending appeal.

Circuit Judge Stark wrote for the court, joined by Circuit Judges Prost and Chen, and dismissed the appeal. Rule 54(b) permits a partial final judgment on fewer than all claims when the district court expressly determines there is no just reason for delay, and the CAFC reviews the finality of such a judgment de novo. The rule uses “claim” to mean a cause of action, which differs from a patent claim. The question was whether Rule 54(b) permits final judgment on infringement of only some patent claims while other claims of the same patent remain unresolved.

The CAFC answered no, explaining that 35 U.S.C. Section 281 “equates the cause of action with the patent as a whole,” and that Section 271(a) likewise defines infringement by reference to a patent. The cases, Senju Pharmaceutical Co. v. Apotex Inc., Ethicon, Inc. v. U.S. Surgical Corp., and Lucent Technologies, Inc. v. Gateway, Inc. support the points that each asserted patent raises an independent cause of action and that ownership rights attach to patents as a whole. The Federal Circuit concluded that “in most if not all instances, each patent can be the basis for a single cause of action for patent infringement, but not more.”

The CAFC found support in its nonprecedential decision in Donnelly Corp. v. Gentex Corp., which vacated a Rule 54(b) judgment where the patentee continued to press some claims of a patent in the district court while seeking review of non-infringement as to other claims of the same patent. District court decisions refusing to certify appeals that resolved only some asserted claims of a patent were also found persuasive.

ParkerVision’s first amended complaint reinforced this conclusion by alleging a single count of infringement of the ‘940 patent without distinguishing between the receiver and transmitter claims. Since infringement of the ‘940 patent’s receiver claims was not a separate cause of action, Rule 54(b) did not allow partial final judgment, and the CAFC lacked a final judgment over which to exercise jurisdiction.

ParkerVision argued that the CAFC had jurisdiction over the ‘907 patent judgment because all of its asserted claims were receiver claims that the district court found not infringed. The CAFC rejected this argument because the district court was never asked to enter final judgment limited to the ‘907 patent. Its only express “no just reason for delay” determination concerned the receiver claims of the ‘907 and ‘940 patents together.

The CAFC also rejected ParkerVision’s argument that the district court could have certified an interlocutory appeal under 28 U.S.C. Section 1292(b), which requires a certification separate from Rule 54(b). The district court was never asked to evaluate the statutory factors, and the CAFC declined to base jurisdiction on speculation.

On remand, ParkerVision requested reassignment to a different district judge, citing statements by the district court expressing frustration with the case’s duration and the judge’s generalized criticism of jury trials in patent cases. Under Eleventh Circuit law, reassignment is a “severe remedy,” and the CAFC found that ParkerVision had not met its burden under that circuit’s three-factor test. The CAFC saw no reason to conclude that the judge would have difficulty setting aside prior views, noting that the district court followed the 2024 directive to conduct claim construction. Reassignment would also entail waste and duplication disproportionate to any gains, since a new judge would need to learn the technology and procedural history.

The CAFC thus dismissed ParkerVision’s appeal and denied its request to be reassigned to a different district judge.