Dyson v. Schedule A Defendants: Battery Pack Design Patent Dispute Voluntarily Dismissed
Dyson Technology Limited filed suit in the Northern District of Illinois against an anonymised group of online marketplace sellers, asserting design patent USD710299S covering a battery pack. The action was voluntarily dismissed after 111 days, with no public merits ruling recorded.
Dyson’s Schedule A Design Patent Action Ends Without Merits Ruling
On 24 January 2025, Dyson Technology Limited filed a design patent infringement action in the U.S. District Court for the Northern District of Illinois (Case No. 1:25-cv-00851), assigned to Judge Manish S. Shah. The sole patent in suit, USD710299S (application number US29/464509), protects the ornamental design of a battery pack — a product category where unauthorised look-alike goods frequently circulate on online marketplaces. The defendants were identified collectively as ‘The Partnerships and Unincorporated Associations Identified on Schedule A,’ the standard pleading structure used in multi-defendant e-commerce enforcement actions.
The case closed on 15 May 2025, 111 days after filing, when Dyson filed a voluntary dismissal under Federal Rule of Civil Procedure 41(a)(1). The notice stated that the dismissal of the final named defendant — PASHITA US — disposed of all defendants, allowing the court to terminate the matter. Rule 41(a)(1) permits a plaintiff to dismiss without a court order, but the public record does not specify whether this dismissal was entered with or without prejudice, leaving the finality of the resolution ambiguous on its face.
A resolution within 111 days is consistent with Schedule A enforcement campaigns that achieve their objectives — such as asset freezes, marketplace takedowns, or private settlements — before trial becomes necessary. It is not possible to confirm from public filings whether monetary consideration changed hands or whether the defendants agreed to cease infringing activity. The absence of a merits ruling means USD710299S was neither validated nor invalidated through this proceeding, and Dyson retains the ability to enforce the patent in future actions subject to any private terms agreed.
Filing to Voluntary dismissal in 111 days
111 days — below the N.D. Illinois median for Schedule A design patent cases, suggesting early resolution
Voluntarily dismissed: what the Rule 41(a)(1) exit means for both sides
Rule 41(a)(1) lets a plaintiff exit without court approval
A Rule 41(a)(1) voluntary dismissal can be filed by the plaintiff as of right — before the defendant serves an answer or motion for summary judgment — and requires no judicial order. Here Dyson invoked this mechanism to terminate the final defendant, PASHITA US, closing the entire case. The procedural route is common in Schedule A campaigns once enforcement objectives are met.
No merits adjudicationThe public record is silent on prejudice terms
A voluntary dismissal under Rule 41(a)(1) is presumed to be without prejudice unless the notice expressly states otherwise — meaning Dyson could theoretically refile against the same parties. However, the filed notice does not specify either way, so practitioners should not assume either outcome with certainty. If a private settlement included a release, the practical effect may mirror a dismissal with prejudice even if the docket is silent.
Prejudice status unconfirmedDyson achieves closure across all Schedule A defendants
Dyson’s voluntary dismissal followed the sequential or collective resolution of every defendant on Schedule A. This pattern is consistent with Dyson securing marketplace de-listings, preliminary injunction compliance, or private settlements before the case proceeds to costly discovery. The outcome signals that Dyson’s enforcement team treats rapid resolution — rather than a public judgment — as the primary goal in multi-defendant design patent campaigns.
Enforcement objective likely metUSD710299S survives unchallenged — enforceable against future infringers
Because the case ended without a merits ruling, USD710299S was neither subjected to invalidity analysis nor claim construction. The design patent exits this litigation with its scope intact. Online sellers of battery packs that replicate Dyson’s ornamental design remain exposed to future enforcement, and Dyson’s demonstrated willingness to file — and pursue through asset-freeze orders — may itself deter infringement on major marketplaces.
Patent validity preservedFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Dyson Technology Limited | Individual | Global consumer electronics group — holder of design patent USD710299S for a battery packSearch in Eureka ↗ |
| Defendant | The Partnerships and Unincorporated Associations Identified on Schedule A | Individual | Anonymous Schedule A online marketplace sellers accused of infringing Dyson’s battery pack designSearch in Eureka ↗ |
| Plaintiff counsel | Andrew Daniel Burnham | Attorney | Counsel for Dyson Technology LimitedSearch in Eureka ↗ |
| Plaintiff counsel | Justin R. Gaudio | Attorney | Counsel for Dyson Technology LimitedSearch in Eureka ↗ |
| Plaintiff counsel | Justin Tyler Joseph | Attorney | Counsel for Dyson Technology LimitedSearch in Eureka ↗ |
| Plaintiff counsel | Lawrence J. Crain | Attorney | Counsel for Dyson Technology LimitedSearch in Eureka ↗ |
| Plaintiff counsel | Luana Faria De Souza | Attorney | Counsel for Dyson Technology LimitedSearch in Eureka ↗ |
| Plaintiff law firm | Greer, Burns & Crain, Ltd. | Law Firm | Representing Dyson Technology LimitedSearch in Eureka ↗ |
| Presiding judge | Judge Manish S. Shah | Judge | Illinois Northern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The dismissal notice is narrow and procedural: it identifies PASHITA US as the final remaining defendant and invokes Rule 41(a)(1) to trigger case termination. The phrasing makes no reference to settlement consideration, injunctive terms, or prejudice, which is typical for Schedule A disposals where commercially sensitive terms are kept off the public docket. The absence of any answer or dispositive motion from the defendant side is consistent with a default posture or pre-answer resolution. USD710299S received no judicial scrutiny of its validity or scope.
USD710299S — Ornamental Design for a Battery Pack
USD710299S, filed under application number US29/464509, is a U.S. design patent protecting the ornamental appearance of a battery pack. Design patents under 35 U.S.C. § 171 protect novel, non-functional visual characteristics — meaning the scope of USD710299S is defined by the drawings in the patent, not by technical specifications. Battery packs for cordless appliances are a high-volume accessory category frequently targeted by counterfeiters and low-cost imitators on online marketplaces, making design registration a commercially strategic choice for Dyson.
For Dyson, whose cordless vacuum and personal care product lines depend on proprietary battery systems, protecting the distinctive appearance of battery packs deters grey-market substitution and reinforces brand integrity at the point of sale. Competitors and third-party accessory manufacturers operating in the cordless appliance space should treat this patent as an active enforcement asset: Dyson has demonstrated willingness to file multi-defendant actions rapidly, seek preliminary injunctions, and deploy asset-freeze orders against marketplace sellers whose products visually replicate the protected design.
Should your battery pack design be cleared against USD710299S?
Any company designing, importing, or selling battery packs — particularly those compatible with or resembling Dyson cordless product form factors — should consider a freedom-to-operate review against USD710299S before product launch or marketplace listing. The ornamental scope of the patent is defined by its drawings, so even minor visual similarities can create infringement exposure under the ‘ordinary observer’ test. Distributors supplying third-party Dyson-compatible battery packs are at heightened risk given Dyson’s active Schedule A enforcement programme.
PatSnap Eureka’s FTO Search Agent can identify the visual scope of USD710299S by mapping its drawings against your product’s design profile, surfacing related Dyson design patent families, and flagging prior art that may bound the patent’s enforceable scope. Eureka can also monitor new Dyson design filings in the battery and power accessory space, giving your R&D and product teams early warning before the next enforcement wave reaches your product category.
Run a freedom-to-operate analysis on USD0710299S to assess your product’s exposure
Run FTO in Eureka →Similar Design Patent Schedule A Cases in N.D. Illinois
Explore comparable Schedule A design patent infringement actions involving consumer electronics accessories filed in the Northern District of Illinois.
What this case signals for the consumer electronics IP enforcement landscape
Schedule A design patent actions are a growing enforcement tool; this case illustrates how Dyson deploys them for battery pack product lines.
Schedule A filings are pressure tactics, not just litigation
The 111-day lifespan and voluntary dismissal suggest Dyson’s primary objective was marketplace disruption — asset freezes, de-listings, and seller deterrence — rather than a damages award. IP teams monitoring consumer electronics enforcement should treat Schedule A filings as a signal that brand protection activity is escalating in a product category.
Design patents on accessories remain potent enforcement assets
USD710299S covers the ornamental design of a battery pack — an accessory category saturated with third-party sellers. A registered design patent enables Dyson to seek preliminary injunctive relief and asset freezes rapidly. Companies in adjacent accessory markets should audit their product aesthetics against Dyson’s design patent portfolio before launching.
Limited v Partnerships — key questions answered
USD710299S (application no. US29/464509) is a U.S. design patent owned by Dyson Technology Limited protecting the ornamental appearance of a battery pack. It was the sole patent asserted in Case No. 1:25-cv-00851 filed in the Northern District of Illinois in January 2025.
The public record does not state a reason. Dyson filed a Rule 41(a)(1) notice after all Schedule A defendants — culminating in PASHITA US — had been disposed of. This pattern is consistent with enforcement objectives such as marketplace de-listings, asset freezes, or private settlements having been achieved before trial.
The filed notice does not specify. Under Rule 41(a)(1), a voluntary dismissal is presumed without prejudice unless the notice states otherwise. The public record is silent, so it cannot be confirmed whether Dyson retains the right to refile against the same defendants or whether a private release was agreed.
No. The case ended without any merits ruling, claim construction, or invalidity analysis. USD710299S exits the litigation with its validity and scope entirely intact. Dyson may continue to enforce the patent in future proceedings against other infringers.
Schedule A defendants are unnamed parties — typically anonymous online marketplace sellers — identified on a sealed exhibit at filing. Plaintiffs use this structure in multi-defendant e-commerce enforcement to enable rapid TRO and asset-freeze applications before defendants can dissipate assets or de-list products. It is commonly used for design patent and trademark actions involving counterfeit or infringing goods sold on platforms such as Amazon or eBay.
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