Apple v. Personalized Media Communications — Federal Circuit Cross-Appeals Dismissed
Apple, Inc. moved to voluntarily dismiss its own cross-appeals (Nos. 2023-1167 and 2023-1168) at the Federal Circuit in a patentability challenge involving PMC’s signal processing patent US8559635B1. The dismissal, unopposed by PMC, leaves two related PMC appeals (2023-1165 and 2023-1166) active — with the USPTO directed to decide whether to intervene within 30 days.
Apple withdraws Federal Circuit cross-appeals in PMC signal processing patent dispute
Apple, Inc., represented by Kirkland & Ellis, filed cross-appeals numbered 2023-1167 and 2023-1168 at the U.S. Court of Appeals for the Federal Circuit on November 18, 2022, challenging patentability determinations related to Personalized Media Communications LLC’s patent US8559635B1, which covers signal processing apparatus and methods. PMC, represented by Goodwin Procter, had separately filed appeals numbered 2023-1165 and 2023-1166 arising from the same underlying invalidity or cancellation action. The proceedings sat within a broader multi-appeal cluster before the Federal Circuit.
On February 20, 2024 — 459 days after filing — the Federal Circuit granted Apple’s unopposed motion to voluntarily dismiss its cross-appeals 2023-1167 and 2023-1168, and simultaneously granted PMC’s motion to lift a stay that had been in place. The court ordered each party to bear its own costs in the dismissed appeals. Apple also filed notice that it does not intend to participate in the remaining PMC appeals (2023-1165 and 2023-1166), effectively withdrawing from the Federal Circuit proceedings entirely.
The voluntary dismissal is notable because it leaves the underlying patentability questions unresolved from Apple’s perspective, while PMC’s own appeals on the same patent continue before the Federal Circuit. The USPTO was directed to advise the court within 30 days whether it intends to intervene in the remaining appeals — a procedural step that suggests the patent’s validity remains genuinely contested. The public record does not reveal what drove Apple’s exit, though the unopposed nature of the motion and the simultaneous stay-lift for PMC’s appeals is consistent with a negotiated or strategic withdrawal rather than a merits resolution.
Filing to settlement in 459 days
459 days — appeal-level proceedings at the Federal Circuit
Apple’s cross-appeals voluntarily dismissed — PMC appeals proceed
Voluntary dismissal at the Federal Circuit
Apple filed an unopposed motion to voluntarily dismiss its own cross-appeals (2023-1167 and 2023-1168). A voluntary dismissal at the appellate level means the moving party — here Apple — elected to withdraw its challenge rather than have the court rule on the merits. Because the motion was unopposed, PMC did not contest the exit, suggesting both parties accepted the procedural outcome without requiring a substantive ruling on patentability.
Appellant-initiated withdrawalWith or without prejudice? The record is silent
The court order dismissing Apple’s cross-appeals does not expressly state whether the dismissal is with or without prejudice. At the Federal Circuit, voluntary dismissals typically resolve the specific appeals filed, but the underlying patent validity question may persist in other proceedings. Practitioners should not assume Apple is permanently barred from challenging US8559635B1 in a different forum — the public record does not confirm preclusive effect either way.
Prejudice unspecifiedPMC’s appeals (2023-1165/1166) continue without Apple
Apple’s dismissal and notice of non-participation leaves PMC’s two appeals (2023-1165 and 2023-1166) live before the Federal Circuit. The court lifted the stay on those appeals simultaneously, setting an opening brief deadline of 45 days. The USPTO was directed to decide within 30 days whether to intervene — a signal that the government may have an independent interest in the patent’s validity outcome, which is common in post-grant review appeal clusters.
USPTO intervention possibleEach party bears its own costs — no fee-shifting
The Federal Circuit ordered that each party shall bear its own costs in appeals 2023-1167 and 2023-1168. This is the default position when a case is dismissed by agreement or voluntary motion, and its absence of fee-shifting to either side suggests no finding of exceptional circumstances or bad-faith conduct. For Apple, this means no cost liability to PMC from the dismissed appeals, though costs in any related PTAB or district court proceedings are governed separately.
No fee-shifting orderedFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Apple, Inc. | Company | Apple, Inc. — petitioner/cross-appellant challenging validity of US8559635B1Search in Eureka ↗ |
| Defendant | Personalized Media Communications, LLC | Company | Personalized Media Communications, LLC — patent assertion entity holding US8559635B1Search in Eureka ↗ |
| Plaintiff counsel | Marcus E. Sernel | Attorney | Counsel for Apple, Inc.Search in Eureka ↗ |
| Defendant counsel | Douglas J. Kline | Attorney | Counsel for Personalized Media Communications, LLCSearch in Eureka ↗ |
| Presiding judge | Judge / | Chief Judge | Court of Appeals for the Federal Circuit — Chief JudgeSearch in Eureka ↗ |
Stipulation of dismissal — official text
The order’s core operative effect is narrow: Apple’s two cross-appeals are dismissed, with no merits ruling on patentability. Critically, the simultaneous lifting of the stay and reinstatement of briefing deadlines for PMC’s appeals (2023-1165/1166) confirms that the underlying validity dispute continues before the Federal Circuit — just without Apple as a participant. The USPTO intervention directive adds a further layer of uncertainty: if the government elects to intervene, the briefing schedule and potential outcome may shift materially. The cost-neutrality order reflects a clean administrative exit for Apple, not a substantive victory for either party.
US8559635B1 — Signal Processing Apparatus and Methods
US8559635B1, assigned application number US08/449413, is a Personalized Media Communications patent covering signal processing apparatus and methods — a broad technical domain encompassing the receipt, processing, and routing of encoded or conditioned signals, with relevance to conditional access systems, digital content delivery, and interactive media architectures. Patents in this family have roots tracing to application activity suggesting foundational claims in the digital broadcasting and content control space. The patent’s breadth across signal handling functions makes it relevant to a wide range of consumer electronics, streaming, and set-top box implementations.
PMC has historically positioned US8559635B1 and related family members as foundational to modern digital content delivery infrastructure, asserting them against major consumer electronics and platform companies. For competitors in streaming, smart TV, digital audio, and conditional access markets, this patent represents a persistent assertion risk. The fact that Apple engaged at the PTAB and Federal Circuit — and then withdrew without a cancellation — suggests the patent’s claims have proven difficult to invalidate on prior art grounds alone, which is a signal the sector should weigh carefully when evaluating product design and licensing exposure.
Should you run an FTO analysis against US8559635B1?
If your product or platform involves signal processing, content conditioning, conditional access, digital broadcasting, or interactive media delivery, US8559635B1 belongs on your freedom-to-operate checklist. PMC’s demonstrated willingness to assert this patent against a defendant of Apple’s scale — and the patent’s survival through Federal Circuit proceedings — means smaller market participants cannot assume the risk has been neutralised. R&D and product teams building receivers, decoders, streaming middleware, or content routing systems should assess claim overlap before launch.
PatSnap Eureka’s FTO Search Agent allows IP teams to map the active claims of US8559635B1 against product feature sets and flag design-around opportunities before they become litigation risks. Eureka’s claim monitoring tools can also alert you if PMC’s remaining Federal Circuit appeals (2023-1165/1166) result in claim amendments or cancellations that affect your exposure — giving your team the earliest possible signal to update your FTO position without manual docket watching.
Run a freedom-to-operate analysis on US8559635B1 to assess your product’s exposure
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What this case signals for the signal processing patent enforcement landscape
Apple’s Federal Circuit retreat leaves PMC’s patent alive and contested — and the USPTO’s potential intervention makes the outcome harder to predict.
Apple’s exit does not resolve US8559635B1 — validity remains open
Apple’s voluntary dismissal means no court has ruled on the merits of its patentability challenge. US8559635B1 survives this Federal Circuit episode with its status unchanged from before Apple filed. Companies in the signal processing, content delivery, and digital media sectors should treat this patent as an active assertion risk until the remaining PMC appeals (2023-1165/1166) conclude.
USPTO intervention signal warrants close monitoring by licensees and competitors
The court’s direction to the USPTO to consider intervention in the remaining appeals is procedurally significant. Government intervention typically occurs when the patent’s validity has broader implications — often arising from inter partes review or ex parte reexamination proceedings. Stakeholders with products touching signal processing and conditional access technology should track the USPTO’s filing decision closely, as it may reshape the claims landscape.
Apple v Personalized — key questions answered
Apple voluntarily dismissed its cross-appeals (Nos. 2023-1167 and 2023-1168) at the Federal Circuit on February 20, 2024. The dismissal was unopposed by PMC. Each party was ordered to bear its own costs. Apple also stated it would not participate in PMC’s remaining related appeals (2023-1165 and 2023-1166), which continue before the court.
No merits ruling on the validity of US8559635B1 was issued in appeals 2023-1167 or 2023-1168. Apple’s voluntary dismissal means the Federal Circuit did not decide the patentability question in those appeals. The patent’s validity remains subject to PMC’s ongoing appeals (2023-1165/1166) before the same court.
The Federal Circuit ordered the USPTO to inform the court within 30 days whether it intends to intervene in PMC’s remaining appeals (2023-1165/1166). This typically arises in appeals from PTAB proceedings where the government has an independent interest in defending or clarifying its patentability determinations. USPTO intervention, if elected, would add a government party to the briefing and could influence how claims are argued.
The court’s order that each party bear its own costs in the dismissed appeals indicates no fee-shifting was applied. Under Federal Circuit practice, this is standard for voluntarily dismissed appeals absent a finding of bad faith or exceptional circumstances. It means Apple has no cost liability to PMC arising from appeals 2023-1167 and 2023-1168 specifically.
The public record does not confirm whether Apple’s dismissal carries preclusive effect in other forums. The order does not specify that the dismissal is with prejudice. Apple may retain the ability to challenge the patent in separate PTAB petitions or district court proceedings, though any such avenue would be subject to applicable estoppel rules and timing restrictions. Practitioners should not assume the dismissal forecloses all future Apple challenges.
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