Dyson v. Weearn: Design Patent Infringement Dismissed With Prejudice
Dyson Technology Limited filed suit against Weearn and associated sellers in the Illinois Northern District Court, asserting two design patents covering its iconic hair stylers and hair dryers. After 174 days, the parties stipulated to dismiss all claims with prejudice, each bearing their own costs — a resolution consistent with a negotiated settlement.
Dyson’s Schedule A design-patent sweep reaches stipulated end
On 24 January 2025, Dyson Technology Limited filed suit in the U.S. District Court for the Northern District of Illinois against a broad group of defendants identified on Schedule A — a litigation structure commonly used to pursue multiple online sellers simultaneously. Among those defendants was Weearn (Defendant No. 42). The asserted patents, USD0852415S and USD0853642S, protect the ornamental designs of Dyson’s hair stylers and hair dryers, products that sit at the premium end of the personal care appliance market.
The action was resolved on 17 July 2025 when Dyson and Weearn filed a joint stipulation of dismissal with prejudice under the agreed terms: all claims and counterclaims between the two parties are extinguished, all pending motions and deadlines are terminated as moot, and each party will bear its own costs and attorneys’ fees. Dismissal with prejudice means Dyson is permanently barred from reasserting these specific claims against Weearn in any future action.
A resolution after just 174 days — with no fee-shifting and a mutual cost-bearing arrangement — is consistent with a confidential settlement or licensing agreement reached between the parties, though the public record is silent on any financial terms. The ‘own costs’ provision is notably neutral, suggesting neither side secured a clear litigation advantage. The case’s swift close relative to the filing date may reflect the leverage that Dyson’s design patent portfolio and the Schedule A filing mechanism typically exerts on smaller online sellers.
Filing to Dismissed with Prejudice in 174 days
174 days from filing to dismissal — relatively swift for a design patent infringement action in N.D. Ill.
Dismissed with prejudice: what the stipulated exit means for both parties
Stipulated dismissal with prejudice closes the door permanently
A dismissal with prejudice by stipulation means both parties agreed to end the litigation and, critically, Dyson cannot re-file the same claims against Weearn based on these patents. Unlike a without-prejudice dismissal — which preserves the right to refile — this resolution is final on the merits for purposes of claim preclusion. The joint nature of the stipulation indicates mutual consent rather than a unilateral withdrawal.
Res judicata appliesDyson secures finality — likely on agreed commercial terms
For Dyson, a with-prejudice dismissal on agreed terms suggests the litigation objective was achieved — whether through a licensing arrangement, a cease-and-desist undertaking, or a negotiated exit. Dyson retains the full enforceability of USD0852415S and USD0853642S against other defendants. The ‘own costs’ clause is standard in settled Schedule A cases and does not indicate Dyson failed to achieve its enforcement goals.
Patents remain enforceableWeearn exits with no public adverse judgment
Weearn avoids a court finding of design patent infringement, which would carry risks of enhanced damages and injunctive relief. The absence of any fee award means Weearn did not achieve a finding of exceptional case under 35 U.S.C. § 285. Any private terms — such as a sales undertaking or payment — remain undisclosed. The with-prejudice nature also protects Weearn from future suit by Dyson on these specific patents.
No infringement finding on recordSchedule A enforcement: a repeatable playbook for design IP
This case illustrates Dyson’s active use of Schedule A omnibus filings to efficiently pursue multiple online marketplace sellers simultaneously. For other e-commerce sellers of hair care appliances, the swift resolution — and Dyson’s continued patent holdings — signals ongoing enforcement risk. Competitors and sellers should note that Dyson’s design patents on its distinctive hair product silhouettes remain active and asserted.
Active enforcement postureFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Dyson Technology Limited | Individual | Global consumer technology company — holder of USD0852415S and USD0853642SSearch in Eureka ↗ |
| Defendant | The Partnerships and Unincorporated Associations Identified on Schedule A | Individual | Weearn (Def. No. 42), online seller identified in Dyson’s Schedule A complaint.Search 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 Mary M. Rowland | Judge | Illinois Northern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The stipulation’s phrasing — ‘dismiss this action with prejudice, including all claims and counterclaims’ — is deliberately comprehensive, extinguishing all causes of action in both directions between Dyson and Weearn. The explicit mootness provision for pending motions and deadlines suggests procedural activity was still live at the time of resolution, consistent with an early-to-mid discovery phase settlement. The mutual cost-bearing clause is neutral and standard in privately negotiated dispositions; it does not reflect a merits adjudication by the court.
USD0852415S & USD0853642S — Dyson hair styler ornamental designs
USD0852415S (App. No. US29/627707) and USD0853642S (App. No. US29/627749) are U.S. design patents protecting the ornamental appearance of Dyson’s hair styling and drying appliances. Design patents under 35 U.S.C. § 171 cover the non-functional, aesthetic elements of a product — in this case, the distinctive visual silhouette and form factor of Dyson’s hair care devices. The ‘USD’ prefix confirms these are issued design patents, and the 29/ application numbers indicate they were filed as design patent applications with the USPTO.
Dyson’s hair stylers and dryers — including the Airwrap and Supersonic product lines — are among the most visually distinctive products in the personal care appliance market. Design patents on these silhouettes create enforceable IP rights against visually similar competing or counterfeit products, even when core technology differs. For online sellers sourcing look-alike hair appliances, these patents represent a significant and actively enforced risk, particularly given Dyson’s demonstrated willingness to pursue Schedule A omnibus litigation in the Northern District of Illinois.
Should you run an FTO against USD0852415S and USD0853642S?
Any company developing, sourcing, or selling hair styling appliances — particularly corded or cordless dryers, multi-function stylers, or airflow-based devices — should assess freedom to operate against Dyson’s design patent portfolio. The ornamental scope of these patents extends to products that an ordinary observer might confuse with Dyson’s visual identity, even if internal technology differs. E-commerce sellers and OEM manufacturers supplying the personal care appliance market face the highest exposure.
PatSnap Eureka’s FTO Search Agent enables IP and R&D teams to rapidly map design patent claim scope against product renders and competitor SKUs. By cross-referencing USD0852415S and USD0853642S with your product design files, Eureka can surface visual similarity risks, identify the full Dyson design patent family, and flag related pending applications before they issue — giving your team actionable clearance intelligence before product launch.
Run a freedom-to-operate analysis on USD0852415S to assess your product’s exposure
Run FTO in Eureka →Similar design patent enforcement cases in N.D. Ill. personal care IP
Browse related Schedule A design patent infringement cases filed in the Northern District of Illinois involving consumer electronics and personal care appliance designs.
What this case signals for the personal care appliance IP landscape
Dyson’s Schedule A filing strategy and swift resolution with prejudice reveal a targeted, scalable enforcement model for design IP in the online marketplace sector.
Schedule A filings amplify enforcement leverage against online sellers
Dyson’s use of an omnibus Schedule A complaint to pursue dozens of sellers simultaneously — including Weearn — is a well-established N.D. Ill. enforcement tactic. It concentrates litigation cost on the plaintiff while confronting individual sellers with disproportionate defence costs, which typically accelerates resolution. IP counsel should monitor this docket for outcomes across all named defendants.
Design patents on iconic product silhouettes carry real enforcement weight
USD0852415S and USD0853642S protect the ornamental appearance of Dyson’s hair stylers and dryers — products with globally recognised industrial designs. Design patent infringement requires only substantial similarity in the eyes of an ordinary observer, a lower evidentiary bar than utility patents. This makes design patents potent tools against copycat products in online marketplaces.
Limited v Partnerships — key questions answered
The case was dismissed with prejudice by stipulation of both parties on 17 July 2025. This means Dyson is permanently barred from refiling the same design patent infringement claims against Weearn. All claims and counterclaims were extinguished, and each party agreed to bear its own costs and attorneys’ fees.
Dyson asserted two U.S. design patents: USD0852415S (Application No. US29/627707) and USD0853642S (Application No. US29/627749). Both patents protect the ornamental design of Dyson hair stylers and hair dryers. Design patents cover the non-functional aesthetic appearance of a product under 35 U.S.C. § 171.
A Schedule A complaint is an omnibus filing used primarily in the Northern District of Illinois that names multiple anonymous or pseudonymous defendants — typically online marketplace sellers — in a single action. Dyson used this structure to pursue dozens of sellers simultaneously, concentrating litigation cost and creating settlement pressure on individual defendants including Weearn (Defendant No. 42). It is a common enforcement tactic for brand owners targeting counterfeit or infringing products on e-commerce platforms.
There was no merits adjudication by the court. The parties filed a joint stipulation of dismissal with prejudice, which is consistent with a privately negotiated resolution — potentially a settlement, licensing agreement, or cease-and-desist undertaking. The public record does not disclose any financial terms. The mutual cost-bearing clause suggests neither party secured a clear litigation victory.
The stipulation specifies that ‘each party will bear their own costs and attorneys’ fees.’ This means no fee-shifting was awarded under 35 U.S.C. § 285 (exceptional case doctrine) or Rule 54(d). It is a standard provision in privately resolved patent cases and does not reflect a finding of exceptional case or litigation misconduct by either party. It is neutral as to the underlying merits of the infringement claims.
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