Dyson Technology v. Schedule A Defendants: Battery Pack Design Patent Dismissed in 15 Days
Dyson Technology Limited brought a design patent infringement action in the Northern District of Illinois against anonymous online sellers over USD710299S, covering a battery pack design. The case was voluntarily dismissed without prejudice against defendant YFHLSEVEN within just 15 days of filing — a timeline consistent with early settlement or strategic withdrawal.
Dyson’s 15-Day Schedule A Campaign: Fast Exit, Open Door
On 25 August 2025, Dyson Technology Limited — the UK-based consumer electronics and IP holding company — filed an infringement action in the Northern District of Illinois (Case No. 1:25-cv-10148) against a class of anonymous online marketplace sellers designated as ‘The Partnerships and Unincorporated Associations Identified on Schedule A.’ The asserted patent, USD710299S (application no. US29/464509), is a design patent protecting the ornamental appearance of a battery pack.
The case closed on 9 September 2025 — just 15 days after filing — when Dyson filed a voluntary notice of dismissal under Federal Rule of Civil Procedure 41(a)(1)(A), specifically targeting defendant YFHLSEVEN and associated individuals and entities. Because the dismissal was entered without prejudice, Dyson is not barred from refiling claims against YFHLSEVEN or related parties at a later date.
A 15-day lifecycle is highly compressed even by the accelerated standards of Schedule A litigation in the Northern District of Illinois, where such cases routinely involve ex parte TROs and rapid platform takedowns. The swift closure may suggest an early resolution — such as a takedown confirmation, informal settlement, or defendant compliance — though the public record is silent on the precise commercial terms. No adversarial filings by the defendant are recorded, and no counsel appeared on behalf of YFHLSEVEN.
Filing to Voluntary dismissal in 15 days
15 days from filing to closure — significantly below average district court patent case duration
Voluntarily dismissed: what Rule 41(a)(1) means for both parties
Rule 41(a)(1) lets plaintiffs exit unilaterally before answer or summary judgment
Under Federal Rule of Civil Procedure 41(a)(1)(A)(i), a plaintiff may dismiss an action without a court order by filing a notice of dismissal before the opposing party serves an answer or a motion for summary judgment. This is a unilateral procedural right — no judicial approval is required. The dismissal takes effect upon filing, explaining the immediate case closure recorded here.
Procedural exit — no merits rulingWithout prejudice: Dyson’s claims survive — but the public record is silent on why
A dismissal ‘without prejudice’ preserves the plaintiff’s right to refile the same claims against the same defendant. A dismissal ‘with prejudice,’ by contrast, permanently extinguishes those claims. The verdict text here confirms a without-prejudice dismissal, meaning Dyson faces no claim-preclusion bar against YFHLSEVEN. However, the public record does not disclose whether the dismissal followed a takedown, payment, or other resolution.
Dyson retains right to refileYFHLSEVEN exits without admitting liability — but remains exposed
Because no answer was filed and no merits ruling was reached, YFHLSEVEN neither admitted nor was adjudicated to have infringed USD710299S. However, the without-prejudice dismissal means Dyson can reassert identical claims if the defendant resumes the allegedly infringing conduct. No costs or sanctions were recorded against the defendant, but the absence of counsel throughout suggests the defendant may have capitulated informally rather than contested the action.
No liability finding; exposure continuesSchedule A tactics: fast, low-cost enforcement for design patent holders
This case is consistent with the Northern District of Illinois’s established role as a preferred venue for Schedule A design patent enforcement against anonymous e-commerce sellers. The 15-day closure — likely without full adversarial proceedings — illustrates how design patent holders can use rapid TRO applications and platform takedown mechanisms to achieve commercial objectives at low litigation cost. Competing battery pack sellers operating on major marketplaces should treat such actions as credible enforcement risk.
E-commerce design patent enforcementFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Dyson Technology Limited | Individual | Consumer electronics IP holding company — holder of USD710299S (battery pack design)Search in Eureka ↗ |
| Defendant | The Partnerships and Unincorporated Associations Identified on Schedule A | Individual | Anonymous online marketplace sellers (Schedule A); specifically YFHLSEVEN and associated 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 ↗ |
| Presiding judge | Judge April M. Perry | Judge | Illinois Northern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The dismissal notice invokes Rule 41(a)(1) and explicitly specifies YFHLSEVEN as the target, suggesting that other defendants on Schedule A may have been addressed separately or remain unresolved. The without-prejudice qualifier is legally significant: it forecloses any res judicata defence by YFHLSEVEN in a future proceeding. The specificity of the filing — naming YFHLSEVEN individually within a multi-defendant action — is consistent with targeted resolution of one seller while preserving claims against others.
USD710299S — Ornamental Design for a Battery Pack
USD710299S, filed under US application number 29/464509, is a US design patent protecting the ornamental appearance of a battery pack — the visual and aesthetic features of the product form, not its functional attributes. Design patents in the US are granted for the novel, non-functional appearance of an article of manufacture and carry a term of 15 years from grant. The ‘299S patent sits within Dyson’s consumer power and accessories design portfolio.
For Dyson, design patents on battery packs serve a dual commercial purpose: they protect brand-distinctive aesthetics that consumers associate with Dyson quality, and they create legal barriers against the proliferating market for third-party replacement and compatible battery packs sold through online marketplaces. Given the volume of Schedule A enforcement actions filed in the Northern District of Illinois over battery accessories, USD710299S represents an active, commercially deployed enforcement asset — not a dormant filing.
Should you run an FTO analysis against USD710299S?
Any company designing, manufacturing, or distributing battery packs — particularly replacement or compatible packs for Dyson-branded appliances — sold through Amazon, eBay, Temu, or similar e-commerce platforms should assess design clearance against USD710299S. Design patent infringement is determined by the ‘ordinary observer’ test: whether an ordinary purchaser would mistake the accused design for the patented one. Even minor aesthetic similarities can sustain an infringement claim.
PatSnap Eureka’s FTO Search Agent allows R&D and product development teams to search Dyson’s full US design patent portfolio, visualise design claim scope, and identify prior art that may support a non-infringement or invalidity position. Proactive FTO analysis before product launch is materially cheaper than defending a Schedule A action — where ex parte TROs and platform delisting can disrupt revenue within days of a complaint being filed.
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 the Northern District of Illinois
Explore comparable design patent infringement actions against anonymous online sellers litigated in the Northern District of Illinois, covering consumer electronics and accessories.
What this case signals for the consumer electronics IP landscape
Dyson’s swift Schedule A action illustrates how design patents are wielded as fast, low-cost tools against marketplace infringers.
Design patents are enforcement-ready tools — not just defensive filings
USD710299S enabled Dyson to initiate court action within the standard Schedule A framework, potentially securing a TRO and platform takedowns within days of filing. Companies in consumer electronics and accessories should audit whether their key product aesthetics are protected by registered design patents before competitors or copyists reach market.
Northern District of Illinois remains the go-to venue for Schedule A campaigns
The court’s procedural familiarity with anonymous-seller actions — including expedited TRO practice and sealed Schedule A filings — makes it structurally attractive for brand enforcement. Any company selling battery packs or accessories on major e-commerce platforms should monitor Dyson’s docket activity and assess design patent clearance against USD710299S.
Limited v Partnerships — key questions answered
USD710299S (application no. US29/464509) is a US design patent held by Dyson Technology Limited that protects the ornamental appearance of a battery pack. In Case No. 1:25-cv-10148, Dyson asserted this patent against anonymous online marketplace sellers, including YFHLSEVEN, alleging their battery pack products infringed the design’s protected aesthetic.
The public record does not disclose the reason. A without-prejudice dismissal under Rule 41(a)(1) is consistent with several scenarios: informal resolution such as a takedown or cease-and-desist agreement, a confidential settlement, or a strategic decision to consolidate claims. Critically, Dyson retains the right to refile identical claims against YFHLSEVEN if infringement continues.
YFHLSEVEN exits the litigation without any liability finding or merits ruling. However, the without-prejudice designation means no claim-preclusion defence arises. Dyson can refile an infringement action based on the same patent and same conduct. If YFHLSEVEN resumes selling the accused battery pack design, it faces fresh litigation risk with no procedural shield from this dismissal.
Yes. The Northern District of Illinois is one of the most frequently used venues in the US for Schedule A patent and trademark enforcement actions against anonymous e-commerce sellers. Its procedural familiarity with TRO applications, sealed filings, and platform subpoenas makes it structurally attractive for brand holders like Dyson pursuing rapid enforcement against marketplace infringers.
US design patent infringement is assessed under the ‘ordinary observer’ test, established in Egyptian Goddess v. Swisa (Fed. Cir. 2008). A design is infringing if an ordinary observer, familiar with the prior art, would find the accused design substantially similar to the patented design such that they would purchase the accused article thinking it was the patented design. Functional features are excluded from the comparison.
PatSnap Eureka searches patents and litigation data to answer instantly.