Yun Wang v. Schedule A Defendants: Bird Door Knocker Design Patent Dismissed
Plaintiff Yun Wang filed suit in the Southern District of Florida alleging infringement of USD1039961S, a design patent covering a bird-shaped door knocker, against a class of anonymous online sellers. The case resolved in just 79 days when Yun Wang voluntarily dismissed the entire action — without specifying whether dismissal was with or without prejudice in the termination record.
Design patent enforcement against anonymous sellers ends in swift voluntary dismissal
On July 1, 2025, plaintiff Yun Wang, represented by YK Law LLP, filed an infringement action in the U.S. District Court for the Southern District of Florida (Case No. 1:25-cv-22959). The suit asserted U.S. Design Patent USD1039961S (application no. 29/938,624), covering the ornamental design of a bird-shaped door knocker, against a group of unnamed defendants — individuals, partnerships, and unincorporated associations identified only on a sealed Schedule A — a filing format commonly used to target clusters of e-commerce sellers simultaneously.
The case closed on September 18, 2025, just 79 days after filing, when Yun Wang filed a notice of voluntary dismissal pursuant to Fed. R. Civ. P. 41(a)(1). The public docket records the basis of termination as ‘Voluntary dismissal.’ The verdict text specifies the dismissal is ‘without prejudice,’ meaning — if that characterisation holds — Yun Wang retains the right to refile claims against the same defendants. No defendant counsel of record appeared, and no costs or fees were awarded.
The 79-day duration is consistent with many Schedule A e-commerce enforcement actions that resolve quickly — either through rapid settlement, a defendant’s capitulation, or a plaintiff’s decision to discontinue pursuit after obtaining preliminary relief or identifying the wrong targets. What drove the dismissal here is not apparent from the public record. Whether any settlement or consent agreement was reached privately, or whether the plaintiff simply chose not to proceed, remains unknown.
Filing to Voluntary dismissal in 79 days
79-day case duration — well below the median for Schedule A design patent actions in S.D. Fla.
Voluntarily dismissed: what the Rule 41 exit means for both parties
Rule 41(a)(1) voluntary dismissal: plaintiff pulls the trigger
Fed. R. Civ. P. 41(a)(1) allows a plaintiff to dismiss an action without a court order before the opposing party serves an answer or a motion for summary judgment. Here, no defendant counsel appeared, making a Rule 41(a)(1) notice available as of right. The dismissal is recorded as without prejudice in the verdict text, meaning the action is terminated but no final judgment on the merits was entered against any party.
No merits ruling enteredWithout prejudice — but the public record leaves ambiguity
The verdict text states the dismissal is ‘without prejudice,’ which would preserve Yun Wang’s right to refile. A dismissal ‘with prejudice’ would extinguish claims permanently. Because the basis of termination field reads only ‘Voluntary dismissal’ without specifying prejudice status, practitioners reviewing the docket summary alone may be uncertain — the full Rule 41 notice text is the authoritative source. Anyone relying on this case for enforcement or clearance analysis should verify the operative filing directly.
Refiling right likely preservedDefendants exit without judgment — but exposure may persist
Because no merits ruling was entered, the Schedule A defendants face no injunction, damages award, or consent decree on the public record. However, a without-prejudice dismissal does not prevent Yun Wang from reinitiating suit. Defendants who are active sellers of bird-shaped door knockers arguably remain at risk of a refiled action, particularly if the plaintiff obtained identifying information during the brief litigation window before dismissal.
No injunction or damagesSwift exit is typical — but USD1039961S remains active and enforceable
Schedule A design patent cases in S.D. Florida frequently settle or dismiss quickly, often after TRO proceedings give the plaintiff leverage to identify sellers or freeze assets. The underlying design patent USD1039961S is unaffected by the dismissal and remains in force. E-commerce sellers of ornamental door knockers with bird motifs should treat this case as a signal that the patent is actively monitored and litigation-ready, regardless of the outcome here.
Patent remains enforceableFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Yun Wang | Individual | Individual design patent holder — inventor/owner of USD1039961S, bird-shaped door knockerSearch in Eureka ↗ |
| Defendant | The Individuals, Partnerships, and Unincorporated Associations identified on Schedule A | Individual | Anonymous Schedule A e-commerce sellers — identity sealed in court filingSearch in Eureka ↗ |
| Plaintiff counsel | Ni Xue | Attorney | Counsel for Yun WangSearch in Eureka ↗ |
| Plaintiff counsel | Yifei Deng | Attorney | Counsel for Yun WangSearch in Eureka ↗ |
| Plaintiff law firm | YK Law LLP | Law Firm | Representing Yun WangSearch in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Florida Southern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The dismissal notice invokes Fed. R. Civ. P. 41(a)(1), the right-of-dismissal provision available to plaintiffs before an answer is filed. The phrasing ‘dismisses the entire action without prejudice’ is precise: it terminates all claims against all Schedule A defendants without any adjudication on the merits. No injunction, consent order, or damages judgment was entered. The without-prejudice designation is legally significant — it resets the clock and preserves Yun Wang’s ability to refile, subject to any applicable statute of limitations. The court made no findings on infringement, validity, or the scope of USD1039961S.
USD1039961S — ornamental design for a bird-shaped door knocker
USD1039961S (application no. 29/938,624) is a U.S. design patent protecting the ornamental appearance of a bird-shaped door knocker. Design patents in the United States protect the non-functional, visual characteristics of a product — in this case, the specific sculptural and decorative form of a door knocker styled as a bird. Design patents typically have a term of 15 years from grant and are assessed for infringement under the ‘ordinary observer’ test, asking whether an ordinary purchaser would be deceived into thinking the accused product is the same as the patented design.
In the context of e-commerce, ornamental design patents on niche home accessories such as door knockers are increasingly used as enforcement tools against marketplace sellers. The bird-shaped door knocker category attracts numerous sellers on platforms such as Amazon, Etsy, and Temu, many of whom source similar designs from common manufacturers. USD1039961S potentially covers a commercially meaningful slice of this market, and its assertion against anonymous Schedule A defendants suggests the patent holder believes multiple online sellers are offering visually similar products. The patent’s continued enforceability post-dismissal makes it a live risk for any seller in this product niche.
Should you run an FTO against USD1039961S?
Any business manufacturing, importing, or selling bird-shaped door knockers — or ornamental door hardware with avian motifs — should assess exposure to USD1039961S. The ordinary observer test applied to design patents can capture products that are not identical but are substantially similar in overall visual impression. Given that this patent has already been the basis of active litigation, the risk is not theoretical. Sourcing teams, product designers, and e-commerce sellers in the decorative hardware category should conduct a freedom-to-operate review before launching or continuing to sell competing products.
PatSnap Eureka’s FTO Search Agent can map the claim scope of USD1039961S against your product designs, identify prior art that may bear on validity, and surface related design patents in the ornamental hardware space that could pose additional risk. Eureka can also monitor for new Schedule A filings by YK Law LLP or other enforcement-active firms in S.D. Florida, giving your team early warning before litigation is initiated — enabling proactive design-arounds or clearance documentation.
Run a freedom-to-operate analysis on USD1039961S to assess your product’s exposure
Run FTO in Eureka →Similar Schedule A design patent cases in S.D. Florida
Explore related Schedule A infringement actions asserting ornamental design patents in the Southern District of Florida against anonymous e-commerce sellers.
What this case signals for the ornamental design patent enforcement landscape
Schedule A design patent actions are a high-volume, fast-moving enforcement tactic — this case illustrates the lifecycle and risks for online sellers and design patent holders alike.
S.D. Florida remains a preferred venue for Schedule A design patent actions
The Southern District of Florida is one of the most frequently used venues for Schedule A e-commerce enforcement. Its willingness to grant ex parte TROs and asset freezes early in proceedings gives design patent holders significant leverage before defendants are even identified. Companies selling decorative hardware or home goods online should monitor filings in this court closely.
A voluntary dismissal does not mean the patent is weak or the dispute resolved
Quick dismissals in Schedule A cases often reflect private resolution rather than plaintiff retreat. Yun Wang’s withdrawal without prejudice preserves full enforcement rights against the same sellers. Defendants who assume the risk has passed without a formal settlement agreement may face refiled claims — potentially in the same court.
Wang v Individuals — key questions answered
Yun Wang filed a design patent infringement action in the Southern District of Florida on July 1, 2025, asserting USD1039961S (bird-shaped door knocker) against anonymous Schedule A e-commerce sellers. The case was voluntarily dismissed without prejudice under Fed. R. Civ. P. 41(a)(1) on September 18, 2025, after 79 days, with no merits ruling entered.
A without-prejudice dismissal means no final judgment was entered and the patent holder retains the right to refile claims. USD1039961S remains a valid, enforceable design patent unaffected by the dismissal. Yun Wang could initiate a new action against the same or different defendants at any time, subject to the applicable statute of limitations.
USD1039961S (U.S. application no. 29/938,624) is a U.S. design patent covering the ornamental appearance of a bird-shaped door knocker. Design patents protect the non-functional visual design of a product, assessed under the ordinary observer test. The patent was asserted in this infringement action against online marketplace sellers offering allegedly similar products.
A Schedule A action is a patent or trademark infringement suit filed against a class of anonymous defendants — typically e-commerce sellers — whose identities are listed on a sealed exhibit. The Southern District of Florida is a favoured venue because courts there have historically been receptive to granting ex parte temporary restraining orders and asset freezes early in proceedings, giving plaintiffs significant leverage to identify and pressure anonymous online sellers.
No. A voluntary dismissal under Rule 41(a)(1) does not constitute any finding on the validity or enforceability of the asserted patent. USD1039961S was neither invalidated nor adjudicated in any way. The patent remains in force and can be asserted in future proceedings. Anyone relying on this case as a clearance signal — i.e., assuming the patent is weak because the case was dropped — should not do so without independent validity analysis.
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