HyperQuery LLC v. Appian Corp.: Infringement Suit Ends in 37-Day Voluntary Dismissal
HyperQuery LLC filed a patent infringement action against Appian Corp. in the Virginia Eastern District Court, asserting US9529918B2 — a patent covering systems and methods for downloading applications via a communication network. The case closed just 37 days after filing, when HyperQuery voluntarily dismissed the action before Appian filed any responsive pleading.
A 37-Day Patent Action Against Appian That Never Reached a Merits Decision
HyperQuery LLC, a patent assertion entity, filed suit against Appian Corp. in the Virginia Eastern District Court on 28 October 2025, asserting infringement of US9529918B2. The patent relates to systems and methods for downloading applications via a communication network — technology broadly relevant to enterprise software platforms of the kind Appian operates. The complaint was filed by Rabicoff Law LLC, a firm frequently associated with NPE-driven patent enforcement campaigns.
On 4 December 2025, HyperQuery filed a notice of voluntary dismissal pursuant to Federal Rule of Civil Procedure 41(a)(1)(A)(i), ending the case 37 days after it was filed. Appian Corp., represented by Scale LLP, had not yet answered the complaint or moved for summary judgment at the time of dismissal. Because the public record is silent on whether the dismissal was with or without prejudice, the precise preclusive effect on HyperQuery’s ability to refile against Appian remains unclear from publicly available filings alone.
The speed of resolution — 37 days — is consistent with either an early-stage settlement or a strategic withdrawal, though no settlement terms have been disclosed. The absence of any responsive pleading from Appian suggests the matter may not have progressed to substantive engagement. What drove the dismissal remains unknown from the public record, and the door to future enforcement of US9529918B2 against Appian may or may not be closed depending on any private agreement reached between the parties.
Filing to Voluntary dismissal in 37 days
37 days — resolved before any responsive pleading was filed
Voluntarily dismissed: what the Rule 41 exit means for both parties
Rule 41(a)(1)(A)(i) allows exit before the defendant responds
Federal Rule of Civil Procedure 41(a)(1)(A)(i) permits a plaintiff to dismiss an action as of right — without a court order — provided the defendant has not yet served an answer or a motion for summary judgment. HyperQuery exercised this right here. The rule creates a clean procedural exit, but says nothing about whether the dismissal is with or without prejudice; that determination depends on additional circumstances or private agreement.
Procedural voluntary dismissalThe public record is silent on with- or without-prejudice status
A dismissal ‘with prejudice’ bars the plaintiff from refiling the same claim; a dismissal ‘without prejudice’ preserves the right to refile. The notice filed by HyperQuery does not specify either designation on the publicly available docket. Under Rule 41, a voluntary dismissal under (a)(1)(A)(i) is generally without prejudice by default unless the plaintiff has previously dismissed the same claim, but any private settlement agreement could impose its own restrictions. Practitioners should treat the preclusive effect as uncertain based solely on the public record.
Prejudice status unclearAppian exits without a merits ruling — but patent risk may persist
Appian Corp. obtained a clean exit from this proceeding without having to litigate the validity or scope of US9529918B2. No court has ruled on infringement or invalidity, meaning the patent remains in force and enforceable. If the dismissal is without prejudice and no private agreement bars refiling, Appian could face renewed enforcement action on the same patent. Robust FTO and patent monitoring coverage for US9529918B2 remains advisable for Appian and similarly positioned enterprise platform vendors.
No merits adjudicationUS9529918B2 remains a live risk for enterprise software platforms
Because the case resolved without any validity or infringement ruling, US9529918B2 retains full enforceability. HyperQuery or a successor entity could assert the patent against Appian again, or pursue other enterprise application download platform vendors. The involvement of Rabicoff Law LLC — a firm with a track record of serial NPE campaigns — suggests this patent may be part of a broader assertion strategy. Competitors in the enterprise and mobile application delivery space should assess their exposure to this patent’s claims.
Patent remains enforceableFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | HyperQuery LLC | Company | Patent assertion entity — holder of US9529918B2 covering app download systemsSearch in Eureka ↗ |
| Defendant | Appian Corp. | Company | Appian Corp. — enterprise low-code application platform providerSearch in Eureka ↗ |
| Plaintiff counsel | Isaac Philip Rabicoff | Attorney | Counsel for HyperQuery LLCSearch in Eureka ↗ |
| Plaintiff law firm | Rabicoff Law LLC | Law Firm | Representing HyperQuery LLCSearch in Eureka ↗ |
| Defendant counsel | Andy Baxter | Attorney | Counsel for Appian Corp.Search in Eureka ↗ |
| Defendant law firm | Scale, LLP | Law Firm | Representing Appian Corp.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Virginia Eastern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The dismissal notice invokes Rule 41(a)(1)(A)(i) and records that Appian had not yet answered or moved for summary judgment — confirming this was a unilateral plaintiff exit requiring no court approval. The filing does not resolve the merits of the infringement claim or address the validity of US9529918B2. As a district court first-instance dismissal, no appellate standard of review applies; the significance lies in what was not decided: scope, validity, and damages all remain open questions that could resurface in future proceedings.
US9529918B2 — Systems and Methods for Downloading Applications via a Network
US9529918B2, filed under application number US14/103500, covers systems and methods for downloading applications via a communication network. The patent addresses the technical infrastructure underpinning app distribution — a foundational capability in both consumer and enterprise software ecosystems. Its claims are potentially broad enough to implicate a range of application delivery platforms, including enterprise low-code and no-code environments that provision and deploy applications over network connections.
For enterprise software vendors, the strategic significance of this patent lies in its breadth: any platform that facilitates network-based application download or provisioning could fall within its claims. The absence of any invalidity or non-infringement ruling in the HyperQuery v. Appian proceeding means the patent’s enforceability remains fully intact. In a sector where application delivery is a core architectural feature, this patent represents a persistent assertion risk — particularly given the NPE enforcement context in which it has now been deployed.
Should you run an FTO analysis against US9529918B2?
Any enterprise software vendor, low-code platform provider, or application marketplace operator whose product involves downloading or distributing applications over a communication network should assess their exposure to US9529918B2. The patent has now been asserted against at least one major enterprise platform (Appian Corp.) without reaching a validity ruling, meaning it carries full legal presumption of validity. Product and R&D teams delivering apps via cloud, SaaS, or mobile infrastructure channels are particularly relevant audiences.
PatSnap Eureka’s FTO Search Agent enables R&D and IP teams to map the claims of US9529918B2 against their product architecture quickly, identify prior art that could inform a validity challenge, and surface related patents in HyperQuery’s portfolio that may represent additional assertion risk. Running a targeted FTO now — before receiving a demand letter — is materially cheaper than litigation-stage analysis and positions teams to respond confidently if approached by NPE counsel.
Run a freedom-to-operate analysis on US9529918B2 to assess your product’s exposure
Run FTO in Eureka →Similar Patent Infringement Cases in Enterprise Software & App Distribution
Cases involving application download and distribution patents litigated in the Virginia Eastern District Court and comparable NPE-driven enforcement actions.
What this case signals for the enterprise software IP landscape
A fast NPE exit before any responsive pleading raises questions about strategy, settlement, and residual patent risk for enterprise platform vendors.
Pre-answer dismissals often signal negotiation — not surrender
When a plaintiff voluntarily dismisses under Rule 41(a)(1)(A)(i) before the defendant has even filed an answer, it typically suggests either early settlement discussions or a strategic reassessment. In NPE litigation, this pattern is consistent with demand-letter-to-license workflows where the complaint is filed primarily to create settlement leverage.
US9529918B2 is unresolved — validity and scope remain untested
No court has ruled on whether US9529918B2 is valid, infringed, or enforceable. Enterprise software and low-code platform vendors active in application download and distribution technology should conduct FTO analysis against this patent before assuming the risk has passed. A single voluntary dismissal does not extinguish the patent.
HyperQuery v Appian — key questions answered
HyperQuery LLC asserted US9529918B2, which covers systems and methods for downloading applications via a communication network. The case was filed in the Virginia Eastern District Court on 28 October 2025 and voluntarily dismissed 37 days later, before Appian filed any responsive pleading.
The public record does not disclose the reason. HyperQuery filed a notice of voluntary dismissal under Rule 41(a)(1)(A)(i) on 4 December 2025, just 37 days after filing. This pattern is consistent with early settlement discussions, a licensing agreement, or a strategic decision to withdraw — but no terms have been publicly disclosed.
The public filing is silent on this distinction. Under Rule 41(a)(1)(A)(i), a voluntary dismissal is generally without prejudice by default if the plaintiff has not previously dismissed the same claim. However, any private settlement agreement between the parties could impose its own restrictions. The preclusive effect cannot be confirmed from publicly available filings alone.
No. The voluntary dismissal resolved the proceeding without any merits ruling. No court has adjudicated the validity, scope, or infringement of US9529918B2. The patent retains its full legal presumption of validity and remains enforceable, meaning it could be asserted again against Appian or other defendants.
The case was filed in the Virginia Eastern District Court as case number 1:25-cv-01884. HyperQuery was represented by Rabicoff Law LLC, and Appian Corp. was represented by Scale LLP. The case closed on 4 December 2025 following a voluntary dismissal notice filed by the plaintiff.
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