Dyson Technology v. Schedule A Defendants: USD710299S Battery Pack Dispute Dismissed
Dyson Technology Limited filed suit in the Northern District of Illinois against anonymous online marketplace sellers over alleged infringement of its battery pack design patent, USD710299S. The case was voluntarily dismissed without prejudice against defendant ‘homebattery’ after just 122 days, leaving Dyson’s legal options fully intact.
Dyson’s Schedule A design patent action ends before merits adjudication
On 18 August 2025, Dyson Technology Limited — the UK-based technology arm of the Dyson group — filed a design patent infringement action in the U.S. District Court for the Northern District of Illinois (Case No. 1:25-cv-09844). The suit targeted an anonymous group of online sellers identified only as ‘The Partnerships and Unincorporated Associations Identified on Schedule A,’ a filing strategy commonly deployed against e-commerce counterfeit networks. The patent at issue, USD710299S (App. No. 29/464509), protects the ornamental design of a battery pack.
The case closed on 18 December 2025 when Dyson filed a Rule 41(a)(1) voluntary dismissal without prejudice, specifically naming defendant ‘homebattery’ and the individuals and entities operating under that name. A without-prejudice dismissal means no final judgment was entered on the merits; Dyson is not barred from refiling the same claims against the same party in the future. The court’s docket reflects no settlement terms, no consent decree, and no fee or cost award to either side.
The 122-day duration is consistent with early-stage Schedule A cases where plaintiffs secure a temporary restraining order, freeze marketplace accounts, and then resolve the matter — through negotiation, compliance, or tactical withdrawal — before full litigation commences. The public record does not disclose whether a TRO was granted, whether assets were frozen, or what specifically prompted the dismissal. The absence of a with-prejudice stipulation and the silence on settlement terms leaves open the question of whether homebattery took remedial action or whether Dyson intends to pursue the matter in a future proceeding.
Filing to Dismissed without Prejudice in 122 days
122 days — resolved faster than the N.D. Illinois median for IP cases
Rule 41(a)(1) without prejudice: what the dismissal means for both parties
Rule 41(a)(1) lets a plaintiff exit without a merits ruling
Under Federal Rule of Civil Procedure 41(a)(1), a plaintiff may voluntarily dismiss an action before the opposing party serves an answer or motion for summary judgment. The dismissal is without prejudice unless the notice states otherwise. Here, Dyson explicitly dismissed without prejudice, meaning the court entered no judgment on whether USD710299S was infringed, valid, or enforceable. The case simply exits the docket — the legal questions remain open.
No merits adjudicationWithout prejudice preserves Dyson’s right to refile
A dismissal without prejudice is materially different from one with prejudice. With prejudice operates as a final judgment, barring the same claim against the same party. Without prejudice carries no such bar — Dyson could refile against homebattery in any competent court subject to applicable statutes of limitations. The public record does not disclose whether any negotiated resolution occurred between the parties; the distinction between a strategic withdrawal and a quiet settlement cannot be determined from the docket alone.
Refile right preservedhomebattery faces continued exposure despite case closure
The dismissal without prejudice does not exonerate homebattery or provide any finding of non-infringement. There is no res judicata shield. If Dyson concludes that infringement is ongoing, it may re-engage with a new complaint, a fresh TRO application, or coordinated action across multiple marketplaces. Defendants in Schedule A cases who believe the litigation has permanently ended on a without-prejudice dismissal typically face a higher-than-expected risk of renewed enforcement activity.
Ongoing exposure riskSchedule A tactics signal sustained anti-counterfeiting posture
Dyson’s use of the Schedule A mechanism — coupled with design patent enforcement — is consistent with a broader brand protection programme targeting e-commerce grey-market and counterfeit sellers. A without-prejudice dismissal against a single named defendant does not neutralise that programme. Marketplace sellers in the battery pack and consumer electronics accessories space should treat this case as evidence of active monitoring by Dyson’s IP team and assess their product listings for design clearance accordingly.
Active enforcement signalFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Dyson Technology Limited | Individual | Global consumer technology group — holder of USD710299S (battery pack design)Search in Eureka ↗ |
| Defendant | The Partnerships and Unincorporated Associations Identified on Schedule A | Individual | Anonymous e-commerce seller ‘homebattery’ and associated unincorporated entitiesSearch 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 law firm | Greer, Burns & Crain, Ltd. | Law Firm | Representing Dyson Technology LimitedSearch in Eureka ↗ |
| Plaintiff law firm | Husch Blackwell LLP | Law Firm | Representing Dyson Technology LimitedSearch in Eureka ↗ |
| Presiding judge | Judge Jeffrey I Cummings | Judge | Illinois Northern District CourtSearch in Eureka ↗ |
Official order — verbatim text
Dyson’s Rule 41(a)(1) notice specifically names ‘homebattery and the Individuals and Entities Operating homebattery,’ suggesting the dismissal was targeted at one or more identified defendants from the original Schedule A list rather than the entire action. The explicit without-prejudice qualifier and the reference to case termination together confirm this is a clean exit with no settlement on the record and no merits ruling. The phrasing ‘the above captioned case may be terminated’ is consistent with standard N.D. Illinois Schedule A practice where single-defendant dismissals are used to wind down a case once enforcement objectives are met or strategy shifts.
USD710299S — Ornamental design for a battery pack
USD710299S (U.S. Application No. 29/464509) is a U.S. design patent protecting the ornamental appearance of a battery pack. Design patents cover the visual, non-functional characteristics of a product — in this case, how the battery pack looks rather than how it works. Protection is assessed against the ordinary observer standard: whether an ordinary observer, familiar with prior art, would be deceived into thinking the accused product is the same as the patented design. The filing date of App. 29/464509 places this design in Dyson’s sustained effort to IP-protect consumer accessories across its product ecosystem.
For Dyson, design patents on battery packs serve a dual commercial purpose: they protect the premium aesthetic identity of Dyson accessories and create an enforcement hook against the large volume of third-party replacement and counterfeit battery packs that circulate on Amazon, eBay, AliExpress, and similar platforms. A single design patent with a straightforward infringement standard is a highly efficient enforcement instrument in this context. For competitors and accessory manufacturers, USD710299S represents a clearance obligation — any battery pack with a visual profile substantially similar to the patented design carries infringement risk regardless of functional differences.
Should your battery pack design clear USD710299S?
Any company designing, importing, or selling battery packs intended for use with Dyson products — or sharing a similar aesthetic — should assess USD710299S as part of a freedom-to-operate review. The ordinary observer test means functional differences are irrelevant; if the overall visual impression is substantially similar, infringement exposure is real. This is particularly acute for third-party accessory makers, white-label importers, and online marketplace sellers sourcing battery packs from overseas manufacturers.
PatSnap Eureka’s FTO Search Agent can map USD710299S against your product’s design features, identify the scope of the ornamental claim, surface related Dyson design filings in the same product family, and flag any prior art that may bear on validity. For product teams preparing a new battery pack SKU or evaluating a supplier’s existing design, running a targeted FTO before market entry is materially cheaper than defending a Schedule A TRO in the Northern District of Illinois.
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
Cases involving design patent enforcement against anonymous e-commerce sellers in the Northern District of Illinois, including battery pack and consumer electronics accessory disputes.
What this case signals for the consumer electronics IP landscape
Dyson’s Schedule A filing strategy and rapid closure illustrates how design patents are weaponised against e-commerce sellers.
Design patents are a potent first-strike tool in e-commerce enforcement
USD710299S gave Dyson a low-threshold infringement standard — identical or substantially similar ornamental appearance — making it well-suited to seek emergency relief against online sellers. Companies protecting consumer electronics accessories should consider design patent portfolios as a complement to utility patents for rapid enforcement.
Schedule A cases resolve fast but leave legal exposure unresolved
At 122 days, this case closed before substantive motion practice. That speed typically reflects an early negotiated outcome, account freeze compliance, or strategic withdrawal. In none of these scenarios is the defendant’s liability actually adjudicated — a fact that matters to any future buyer, distributor, or marketplace partner of the named seller.
Limited v Partnerships — key questions answered
USD710299S (App. No. 29/464509) is a U.S. design patent owned by Dyson Technology Limited that protects the ornamental appearance of a battery pack. In Case No. 1:25-cv-09844, Dyson alleged that the defendant ‘homebattery’ and associated entities infringed this design by selling battery packs with a substantially similar visual appearance. The case was dismissed without prejudice before any merits ruling on infringement or validity.
A dismissal without prejudice under Rule 41(a)(1) means Dyson voluntarily ended this specific action without a court ruling on the merits. No judgment of infringement, non-infringement, or invalidity was entered. Critically, Dyson is not barred from refiling identical claims against homebattery in the future — the without-prejudice designation preserves all of Dyson’s litigation options subject to applicable statutes of limitations.
The Schedule A filing strategy allows a plaintiff to sue a large group of anonymous online sellers — identified only by their marketplace storefronts — in a single action. This approach is common in the Northern District of Illinois and enables plaintiffs to seek a temporary restraining order, freeze seller accounts and PayPal funds, and obtain expedited discovery to identify defendants, all before the sellers can transfer assets or close storefronts.
The public docket does not record a settlement, consent decree, or negotiated resolution. The case closed on a voluntary dismissal without prejudice filed by Dyson. Whether a private resolution was reached between the parties — such as a cease-and-desist compliance or commercial agreement — cannot be determined from publicly available records. No judgment on the merits was entered.
U.S. design patent infringement is assessed under the ‘ordinary observer’ test established in Egyptian Goddess v. Swisa (Fed. Cir. 2008). An accused product infringes if an ordinary observer, familiar with the prior art, would be deceived into believing the accused design is substantially the same as the patented design. Functional differences between the accused and patented products are not a defence. This lower threshold makes design patents particularly effective enforcement tools against e-commerce product listings.
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