LinkedIn v. eBuddy Technologies: Federal Circuit Appeal Voluntarily Dismissed in 137 Days
LinkedIn Corporation voluntarily dismissed its Federal Circuit patentability appeal against eBuddy Technologies BV over US8402179B1, an event notification system and method patent. The unopposed dismissal closed in just 137 days, with each side bearing its own costs and no prejudice terms specified on the public record.
LinkedIn drops Federal Circuit patentability appeal against eBuddy in 137 days
On 11 September 2023, LinkedIn Corporation filed appeals Case No. 23-2371 at the Court of Appeals for the Federal Circuit, challenging a patentability determination involving US8402179B1, a patent held by eBuddy Technologies BV covering an event notification system and method. LinkedIn was represented by Pillsbury Winthrop Shaw Pittman LLP, with Christopher Kao as lead counsel; eBuddy was represented by Edmonds & Schlather, PLLC through Stephen F. Schlather.
The case closed on 26 January 2024 — just 137 days after filing — when the Federal Circuit granted LinkedIn’s unopposed motion to voluntarily dismiss the appeals pursuant to Rule 42(b) of the Federal Rules of Appellate Procedure. The court ordered that each side bear its own costs. The public record does not specify whether the dismissal was with or without prejudice, a distinction that carries material consequences for whether LinkedIn could refile equivalent claims.
A 137-day lifecycle for a Federal Circuit appeal is notably short and suggests the parties may have reached a private resolution — such as a licensing arrangement or covenant not to sue — or that LinkedIn concluded the appeal was no longer commercially worthwhile to pursue. Because the motion was unopposed, eBuddy did not contest the dismissal. What precisely drove LinkedIn’s decision to withdraw, and whether any commercial terms accompanied the exit, remains unknown from publicly available filings.
Filing to resolution in 137 days
137 days — faster than most Federal Circuit patent appeals
LinkedIn’s voluntary dismissal under FRAP Rule 42(b): what the record shows
FRAP Rule 42(b): voluntary dismissal of an appeal
Rule 42(b) of the Federal Rules of Appellate Procedure allows an appellant to voluntarily dismiss an appeal, typically by filing a motion. Where the opposing party does not object — as here — courts routinely grant the motion. The result is that the appeal itself is terminated, leaving the underlying tribunal’s decision undisturbed. LinkedIn, as appellant, initiated and controlled this exit.
Appellant-initiated dismissalWith or without prejudice? The public record is silent
A voluntary dismissal ‘with prejudice’ permanently bars the dismissing party from relitigating the same claims; ‘without prejudice’ preserves that right. The court’s order here states only that the appeals are dismissed and that costs are self-borne — it does not specify prejudice terms. This ambiguity is significant: practitioners should not assume either outcome from the face of the order alone without reviewing any accompanying stipulation or private agreement.
Prejudice terms not publicly statedEach side bears its own costs — no prevailing party signal
The Federal Circuit’s order explicitly provides that each side shall bear its own costs. In contested patent appeals, cost awards often signal which party the court views as prevailing. A mutual cost-bearing arrangement is consistent with a negotiated resolution or a strategic withdrawal rather than a contested ruling on the merits. It does not indicate fault or weakness on either side’s part.
Neutral cost allocationInvalidity challenge withdrawn before Federal Circuit ruled
The underlying cause was a patentability — specifically an invalidity or cancellation — action concerning US8402179B1. Because LinkedIn withdrew before the Federal Circuit issued any substantive ruling, the patent’s validity was not adjudicated at the appellate level in this proceeding. eBuddy’s patent therefore remains in force, and any earlier administrative or lower-tribunal determination on validity stands as the last substantive record.
No appellate validity ruling issuedFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | LinkedIn Corporation | Company | Global professional networking platform — appellant in patentability challenge over US8402179B1Search in Eureka ↗ |
| Defendant | eBuddy Technologies BV | Company | Dutch messaging technology firm — holder of US8402179B1 event notification patentSearch in Eureka ↗ |
| Plaintiff counsel | Christopher Kao | Attorney | Counsel for LinkedIn CorporationSearch in Eureka ↗ |
| Defendant counsel | Stephen F. Schlather | Attorney | Counsel for eBuddy Technologies BVSearch in Eureka ↗ |
| Presiding judge | Judge / | Chief Judge | Court of Appeals for the Federal Circuit — Chief JudgeSearch in Eureka ↗ |
Stipulation of dismissal — official text
The Federal Circuit’s order is procedural rather than substantive: it grants LinkedIn’s unopposed FRAP Rule 42(b) motion and dismisses the appeals, with costs split equally. Critically, the order makes no finding on the merits of the patentability dispute. eBuddy’s US8402179B1 is therefore neither validated nor invalidated by this ruling. The cost-sharing term is consistent with a mutually agreed exit rather than a contested outcome, and the absence of prejudice language leaves the record technically ambiguous as to LinkedIn’s ability to refile equivalent challenges.
US8402179B1 — Event Notification System and Method
US8402179B1 covers an event notification system and method — a technology domain central to real-time messaging, presence signalling, and push notification infrastructure. The patent is held by eBuddy Technologies BV, a Dutch company with origins in web-based instant messaging. The B1 designation indicates the patent issued without post-grant amendment, and the corrected application number US13/554996 places it in a filing cohort associated with mobile and internet communication innovations. This technical area sits at the intersection of server-side event brokering and client notification delivery.
Event notification architectures underpin core features across professional networking platforms, enterprise messaging tools, and consumer applications — making US8402179B1 strategically relevant well beyond the LinkedIn-eBuddy dispute. The fact that LinkedIn pursued and then withdrew a Federal Circuit invalidity challenge suggests the patent withstood at least one prior validity scrutiny. Any company building or acquiring real-time notification features, presence systems, or push messaging infrastructure should assess claim overlap against this patent carefully.
Should your product team run an FTO against US8402179B1?
If your organisation develops event-driven notification systems, real-time messaging infrastructure, push notification services, or presence-awareness features, US8402179B1 is directly relevant to your freedom-to-operate position. The patent survived a LinkedIn-initiated invalidity challenge at the Federal Circuit without a ruling against it, which means it carries greater presumptive enforceability than a patent that has never faced appellate scrutiny. Product teams building on these architectures should not assume prior art arguments resolved this risk.
PatSnap Eureka’s FTO Search Agent can map your product’s technical implementation against the claims of US8402179B1, surface the prosecution history from application US13/554996, and flag any continuation or family members that may extend eBuddy’s coverage. Eureka’s claim monitoring tools also alert your team if the patent’s status or related applications change — giving you continuous visibility rather than a point-in-time assessment.
Run a freedom-to-operate analysis on US8402179B1 to assess your product’s exposure
Run FTO in Eureka →Similar Federal Circuit patent appeals in event notification and messaging technology
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What this appeal dismissal signals for the event notification patent space
A major platform dropping a Federal Circuit patentability challenge without a ruling is a meaningful data point for anyone operating near US8402179B1.
eBuddy’s US8402179B1 survived LinkedIn’s appellate challenge intact
Because LinkedIn withdrew before any Federal Circuit ruling, the patent emerges from this proceeding without an adverse appellate validity determination. For competitors or product teams developing event notification features, this patent remains an active risk asset. Any freedom-to-operate analysis should treat US8402179B1 as presumptively valid and enforceable.
Unopposed voluntary dismissal typically signals a private commercial resolution
When a well-resourced appellant like LinkedIn files an unopposed FRAP 42(b) motion this early in an appeal, it is consistent with a licensing deal, covenant not to sue, or strategic reprioritisation. The mutual cost-bearing term reinforces the settlement hypothesis. Companies in the professional networking or messaging space should monitor eBuddy’s licensing activity as a forward signal.
LinkedIn v eBuddy — key questions answered
LinkedIn voluntarily dismissed its Federal Circuit appeal (Case No. 23-2371) against eBuddy Technologies BV on 26 January 2024, pursuant to FRAP Rule 42(b). The appeal concerned the patentability of US8402179B1, an event notification system and method patent. The motion was unopposed and the court ordered each side to bear its own costs. No merits ruling was issued.
No. LinkedIn’s voluntary dismissal of Case No. 23-2371 means the Federal Circuit issued no substantive ruling on the validity of US8402179B1. The patent’s validity was not adjudicated at the appellate level in this proceeding, and it remains presumptively valid and enforceable as a result.
FRAP Rule 42(b) allows an appellant to voluntarily withdraw an appeal by motion. If unopposed, courts routinely grant the dismissal. The effect is that the appeal terminates without a merits ruling, leaving the lower tribunal’s decision as the last substantive determination. The dismissing party typically controls whether the withdrawal is with or without prejudice, though the public order here does not specify.
LinkedIn Corporation was represented by Pillsbury Winthrop Shaw Pittman LLP, with Christopher Kao as lead counsel. eBuddy Technologies BV was represented by Edmonds & Schlather, PLLC, with Stephen F. Schlather as lead counsel. The case was docketed at the Court of Appeals for the Federal Circuit, District of Columbia.
US8402179B1 is a United States patent held by eBuddy Technologies BV covering an event notification system and method. The corresponding application number is US13/554996. The patent relates to real-time event signalling and notification delivery technology — a domain relevant to messaging platforms, push notification systems, and presence-awareness features in internet and mobile applications.
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