Dyson v. Schedule A Defendants: Hair Styling Design Patent Dispute Ends in 152 Days
Dyson Technology Limited asserted two design patents covering hair styling and care apparatus against a group of unnamed e-commerce defendants in the Northern District of Illinois. The case was voluntarily dismissed with prejudice after 152 days, closing off any future re-filing on these claims.
Dyson’s Schedule A Design Patent Action: A Fast Close With Finality
On 17 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-00619), assigned to Judge LaShonda A. Hunt. The complaint targeted a group of unnamed defendants — a ‘Schedule A’ structure commonly used to pursue multiple e-commerce sellers simultaneously — for alleged infringement of two design patents: USD852415S and USD853642S, both covering hair styling and hair care apparatus.
The case closed on 18 June 2025 via voluntary dismissal with prejudice. A dismissal with prejudice is legally significant: unlike a without-prejudice dismissal, it permanently bars Dyson from reasserting these specific claims against the same defendants. No defendant law firm or agent appears on the public record, which is consistent with early resolution — potentially through settlement, default, or a negotiated exit — before formal defence counsel was engaged.
At 152 days from filing to close, the matter resolved faster than many Schedule A patent actions, which frequently extend to preliminary injunction hearings and beyond. The with-prejudice designation is notable: it suggests the parties reached a conclusive arrangement rather than simply letting the matter lapse. The precise commercial terms, if any, remain undisclosed. The absence of a recorded fee award indicates neither side was sanctioned, consistent with a negotiated resolution.
Filing to Voluntary dismissal in 152 days
152 days — resolved faster than the median N.D. Illinois patent case
Dismissed with prejudice: what this resolution means for both sides
With prejudice: a permanent bar on re-filing these claims
A voluntary dismissal with prejudice under Federal Rule of Civil Procedure 41(a) operates as an adjudication on the merits. Dyson cannot re-file these specific infringement claims against the same Schedule A defendants in any federal court. This is a stronger procedural outcome than a without-prejudice dismissal, which would leave the door open for future litigation. The finality here is mutual and absolute.
Rule 41(a) — merits-equivalent finalityDyson forecloses re-litigation — likely after extracting a resolution
For Dyson, agreeing to a with-prejudice dismissal typically signals that the plaintiff secured something of value — whether a settlement payment, an undertaking to cease infringing sales, or removal of infringing listings. Dyson retains full ownership of USD852415S and USD853642S and can continue enforcing both patents against different defendants. The commercial terms, if any, remain confidential and are not reflected in the public docket.
Patents intact — future enforcement possibleSchedule A defendants gain permanent release from these claims
The unnamed defendants — consistent with e-commerce sellers targeted in Schedule A actions — received a permanent release from Dyson’s infringement claims under these two design patents. No defendant counsel appeared on record, which may indicate that settlement or compliance was reached before formal representation was required. The with-prejudice bar protects these specific defendants from being re-sued on the same patent claims by Dyson.
Permanent release — no re-filing by DysonDesign patent enforcement in hair care remains commercially live
Dyson’s willingness to file and close a Schedule A action within 152 days signals an active enforcement posture in the hair styling apparatus category. The continued validity of USD852415S and USD853642S means any third-party seller or manufacturer operating in this space — particularly on e-commerce platforms — faces ongoing exposure. Competitors and IP teams should monitor Dyson’s design patent portfolio for further enforcement activity.
Active enforcement posture — monitor Dyson portfolioFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Dyson Technology Limited | Individual | Global consumer technology company — holder of USD852415S and USD853642SSearch in Eureka ↗ |
| Defendant | The Partnerships and Unincorporated Associations Identified on Schedule A | Individual | Unnamed e-commerce partnerships and unincorporated associations identified on Schedule ASearch 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 LaShonda A. Hunt | Judge | Illinois Northern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The verdict entry — ‘This case is dismissed with prejudice’ — reflects a voluntary dismissal under Federal Rule of Civil Procedure 41(a). The with-prejudice designation transforms what is procedurally a plaintiff-initiated withdrawal into an outcome equivalent to a final adjudication on the merits. For the Schedule A defendants, it is a permanent shield against these specific claims. For Dyson, it preserves the underlying design patents in full force while closing this particular enforcement action definitively.
USD852415S & USD853642S — Hair Styling and Hair Care Apparatus Design Patents
USD852415S (application no. US29/627707) and USD853642S (application no. US29/627749) are U.S. design patents protecting the ornamental appearance of hair styling and hair care apparatus. Design patents in the ’29/’ series cover aesthetic rather than functional innovation — they protect the visual impression of a product as shown in the patent’s figures. For consumer electronics brands like Dyson, design patents in this category are a primary tool for preventing copycat products from mimicking the distinctive look of premium appliances.
In the highly competitive hair care appliance market — where Dyson commands a significant premium through its distinctive product aesthetics — these design patents represent a strategic enforcement asset. Competitors, contract manufacturers, and e-commerce resellers operating in adjacent product categories face real exposure if their products’ visual design is substantially similar to the claimed ornamental features. The continued assertion of both patents in active enforcement actions signals Dyson’s intent to protect its aesthetic differentiation aggressively.
Should you run an FTO against USD852415S and USD853642S?
Any business developing, manufacturing, importing, or selling hair styling or hair care appliances — particularly for the U.S. e-commerce market — should conduct a freedom-to-operate assessment against both Dyson design patents. Schedule A enforcement actions typically target online marketplace sellers, but brand owners, OEMs, and private-label sourcing teams are equally exposed if their product’s visual design overlaps with the ornamental features claimed by Dyson. This case demonstrates that Dyson actively monitors and acts on potential design infringement.
PatSnap Eureka’s FTO Search Agent can map the visual claim scope of USD852415S and USD853642S against your product’s design, surface relevant prior art that may limit the patents’ enforceability, and flag other Dyson design patents in adjacent hair care categories. A targeted FTO analysis before product launch or marketplace listing can significantly reduce the risk of becoming a defendant in a future Schedule A enforcement action filed by Dyson or similarly positioned brand owners.
Run a freedom-to-operate analysis on USD0852415S to assess your product’s exposure
Run FTO in Eureka →Similar Hair Styling Apparatus Design Patent Cases in N.D. Illinois
Explore comparable Schedule A design patent enforcement actions involving hair care appliances filed in the Northern District of Illinois.
What this case signals for the hair styling apparatus IP landscape
Dyson’s Schedule A strategy reveals how design patent enforcement in consumer personal care is evolving against e-commerce sellers.
Schedule A filings remain Dyson’s preferred tool against e-commerce infringers
Filing against unnamed Schedule A defendants allows brand owners like Dyson to target multiple online sellers simultaneously, often securing TROs and asset freezes before defendants can react. The 152-day resolution here is consistent with a rapid enforcement model: file, pressure, settle, close. IP teams at competing brands should expect similar tactics from large consumer tech companies with strong design portfolios.
With-prejudice closures in Schedule A cases typically indicate private resolution
When a plaintiff voluntarily dismisses with prejudice in a Schedule A action — without a public consent decree or damages award — the most commercially plausible explanation is a confidential settlement or compliance undertaking. R&D and product teams sourcing hair care products for e-commerce should treat this case as a marker of active design patent risk in the Dyson aesthetic space.
Limited v Partnerships — key questions answered
The case was voluntarily dismissed with prejudice on 18 June 2025, 152 days after filing. A with-prejudice dismissal permanently bars Dyson from re-asserting these specific infringement claims against the same defendants. No damages award or cost ruling appears in the public record.
Dyson asserted two U.S. design patents: USD852415S (application no. US29/627707) and USD853642S (application no. US29/627749), both covering the ornamental design of hair styling and hair care apparatus. Design patents protect the visual appearance of a product rather than its functional features.
A Schedule A filing allows a plaintiff to sue multiple unnamed defendants — typically e-commerce marketplace sellers — in a single action. The identities of defendants are listed in a confidential schedule attached to the complaint. This approach is common in IP enforcement against online sellers of counterfeit or infringing products, and frequently accompanies applications for temporary restraining orders and asset freezes.
Not necessarily. In Schedule A cases, a voluntary dismissal with prejudice typically signals that the plaintiff secured a resolution — often a private settlement or compliance undertaking — and agreed to close the case permanently. It does not indicate a court ruling against Dyson on the merits. Dyson retains full ownership of both design patents and may enforce them against other parties.
The case confirms that Dyson actively enforces its hair styling apparatus design patents against e-commerce sellers in the Northern District of Illinois. Sellers, importers, and manufacturers whose products visually resemble the ornamental designs claimed in USD852415S or USD853642S face potential Schedule A enforcement exposure. Conducting a freedom-to-operate analysis against Dyson’s design patent portfolio is advisable before listing or selling similar products in the U.S. market.
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