Shenzhen Yima v. Ming D&Y: LED Dog Collar Patent Case Dismissed Without Prejudice
Shenzhen Yima Technology Co Ltd filed a patent infringement suit against Ming D&Y Inc asserting US9488325B2 over eight LED dog collar ASINs sold on Amazon. The Northern District of Texas dismissed the case without prejudice after 180 days, with the defendant awarded costs — leaving the door open for future re-filing.
LED pet accessory patent clash ends in no-merits dismissal with cost award
On April 3, 2025, Shenzhen Yima Technology Co Ltd, a Chinese consumer electronics and accessories company, filed suit against Ming D&Y Inc in the Northern District of Texas (Case No. 3:25-cv-00817) before Judge Brantley Starr. The complaint asserted US9488325B2 — a patent covering LED dog collar technology — against eight specific Amazon ASIN listings attributed to the defendant, suggesting the dispute centred on competing products sold through e-commerce channels.
The case closed on September 30, 2025, when the court entered a final judgment dismissing the action without prejudice. The dismissal without prejudice means no ruling was made on the merits of the infringement claim, and Shenzhen Yima retains the legal right to re-file the same claims subject to applicable statutes of limitations and procedural rules. Notably, while each party was ordered to bear its own attorneys’ fees, the defendant Ming D&Y Inc was separately awarded costs — an asymmetric outcome that suggests the court found procedural grounds to favour the defendant in the cost allocation.
A resolution within 180 days is relatively swift for a patent infringement case in the Northern District of Texas, suggesting the parties may have reached a commercial accommodation or that a procedural deficiency prompted early termination before substantive litigation commenced. The public record does not disclose whether a settlement was reached, whether the plaintiff voluntarily sought dismissal, or whether a court order compelled it. The cost award to the defendant introduces a degree of financial consequence for the plaintiff despite the absence of a merits adjudication, and IP professionals should note the case remains potentially live for re-assertion.
Filing to Dismissed without Prejudice in 180 days
180 days from filing to dismissal — faster than the N.D. Texas median for patent cases
Dismissed without prejudice: what the judgment means for both parties
Dismissal without prejudice leaves infringement claim unresolved
A dismissal without prejudice is not a decision on the merits. The court’s order does not determine whether US9488325B2 was infringed, valid, or enforceable. It simply terminates this particular proceeding. Shenzhen Yima retains the right to initiate a new action asserting the same patent against the same or different defendants, provided the statute of limitations has not elapsed and proper procedure is followed.
No merits rulingYima retains re-filing rights but absorbs its own legal fees
Shenzhen Yima’s patent rights under US9488325B2 are not extinguished by this dismissal. The company may reassess its litigation strategy, gather additional evidence, or negotiate with Ming D&Y before deciding whether to re-file. However, the cost award to the defendant and the burden of its own attorneys’ fees represent a real financial consequence. Whether this dismissal reflects a strategic withdrawal or an involuntary outcome is not clear from the public record.
May re-fileMing D&Y wins costs but faces unresolved patent exposure
Ming D&Y Inc secured a cost award — an outcome that typically signals the court found some procedural or substantive basis to favour the defendant at this stage. However, because the dismissal is without prejudice, the defendant’s LED dog collar product line remains potentially exposed to re-assertion of US9488325B2. Counsel for Ming D&Y should consider whether to seek a declaratory judgment of non-infringement or invalidity to foreclose future litigation risk.
Costs awarded; risk persistsAmazon ASIN-level targeting signals enforcement model risk for e-commerce sellers
The complaint specifically identified eight Amazon ASINs, consistent with a product-mapping enforcement strategy increasingly used by Chinese IP holders against competing sellers on US e-commerce platforms. Other sellers of LED pet accessories on Amazon should monitor this patent, as the unresolved dismissal leaves US9488325B2 available for future enforcement actions. The combination of ASIN-level targeting and N.D. Texas filing is a recognisable litigation pattern worth tracking.
E-commerce enforcement riskFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Shenzhen Yima Technology Co Ltd | Company | Chinese consumer electronics company — holder of US9488325B2 for LED dog collarsSearch in Eureka ↗ |
| Defendant | Ming D&Y Inc | Company | Ming D&Y Inc — seller of LED dog collar products via Amazon marketplaceSearch in Eureka ↗ |
| Plaintiff counsel | Nicholas E. Najera | Attorney | Counsel for Shenzhen Yima Technology Co LtdSearch in Eureka ↗ |
| Plaintiff counsel | Timothy Tiewei Wang | Attorney | Counsel for Shenzhen Yima Technology Co LtdSearch in Eureka ↗ |
| Plaintiff law firm | Ni, Wang & Massand PLLC | Law Firm | Representing Shenzhen Yima Technology Co LtdSearch in Eureka ↗ |
| Defendant counsel | Charles M Gearing | Attorney | Counsel for Ming D&Y IncSearch in Eureka ↗ |
| Defendant law firm | Weaver Johnston & Nelson, PLLC | Law Firm | Representing Ming D&Y IncSearch in Eureka ↗ |
| Presiding judge | Judge Brantley Starr | Judge | Texas Northern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s final judgment orders dismissal without prejudice and awards costs to the defendant while requiring each party to bear its own attorneys’ fees. The split between costs and fees is notable: costs (court filing fees, service costs, etc.) are awarded to Ming D&Y, while the larger burden of legal fees falls on each party respectively. The without-prejudice designation preserves Shenzhen Yima’s right to re-file, meaning this judgment resolves the procedural posture of the case without adjudicating infringement, validity, or enforceability of US9488325B2. The phrase ‘all relief not expressly granted is denied’ forecloses any implied remedies from this proceeding.
US9488325B2 — LED illumination technology for dog collar products
US9488325B2 (application number US14/544688) is a granted US utility patent covering LED illumination technology applied to dog collar products. The patent’s claims are directed to the structural and functional elements that enable a dog collar to incorporate LED lighting — a feature increasingly central to the pet safety accessories market. Granted patents in this consumer product category often cover specific attachment mechanisms, light configurations, or power supply arrangements that distinguish one product design from another.
For a Chinese manufacturer such as Shenzhen Yima to hold a granted US patent in the LED pet accessories space and actively assert it against Amazon marketplace sellers signals a strategic IP posture designed to protect market share in a highly competitive consumer goods category. The eight targeted ASINs suggest Yima has mapped competitor product configurations to specific claim elements, a methodology consistent with product-to-patent claim charting used in e-commerce enforcement campaigns. Competitors and platform sellers in the LED pet accessories space should treat this patent as an active enforcement asset.
Should you run an FTO analysis against US9488325B2?
Any company manufacturing, importing, or selling LED dog collar products in the US market — particularly through Amazon — should consider a freedom-to-operate analysis against US9488325B2. The patent holder has demonstrated willingness to enforce at the ASIN level, which means individual product listings can become direct litigation targets. This is especially relevant for sellers whose products share structural features with those identified in the eight targeted ASINs, including light attachment methods, collar construction, or LED power arrangements.
PatSnap Eureka’s FTO Search Agent can map your specific product configuration against the claim elements of US9488325B2, identify design-around opportunities, and surface related patents in the LED pet accessory space that may present additional risk. For product and R&D teams developing new collar SKUs, running this analysis before launch reduces the risk of ASIN-level enforcement action and the platform consequences that can follow.
Run a freedom-to-operate analysis on US9488325B2 to assess your product’s exposure
Run FTO in Eureka →Similar LED pet accessory and consumer product patent cases in N.D. Texas
Cases involving LED consumer product patents and ASIN-level enforcement actions in the Northern District of Texas, including comparable dismissal outcomes.
What this case signals for the LED pet accessories IP landscape
A swift no-merits dismissal with an asymmetric cost ruling carries distinct signals for both patent holders and e-commerce sellers in the pet accessories space.
ASIN-level patent suits are a growing enforcement vector for consumer product IP
Filing patent infringement claims tied to specific Amazon ASINs is an established playbook for consumer product patent holders, particularly those based in China. This case against Ming D&Y demonstrates that LED pet accessory patents are being actively monitored and enforced against Amazon marketplace sellers. Companies selling similar products should audit their listings against US9488325B2 and related patents proactively.
Without-prejudice dismissals do not terminate patent risk for defendants
Ming D&Y received costs but not a final resolution. The patent US9488325B2 remains enforceable, and the plaintiff retains the right to re-file. Defendants in similar positions should evaluate whether seeking a declaratory judgment of invalidity or non-infringement in a favourable venue would provide more durable protection than relying on a procedural dismissal.
Shenzhen v Ming — key questions answered
Shenzhen Yima Technology Co Ltd sued Ming D&Y Inc in the Northern District of Texas asserting US patent 9488325B2 over eight LED dog collar ASINs. The case was dismissed without prejudice after 180 days, with the defendant awarded costs and each party bearing its own attorneys’ fees. No merits ruling was made on infringement or validity.
A dismissal without prejudice means the court did not rule on whether US9488325B2 was infringed or valid. Shenzhen Yima retains full rights to re-file a new infringement action asserting this patent against Ming D&Y or other defendants. The patent itself remains in force and its enforceability is unaffected by this procedural outcome.
The final judgment awards costs to Ming D&Y while requiring each side to bear its own legal fees — an asymmetric result. Courts may award costs to a prevailing party even without a merits judgment, particularly where a plaintiff voluntarily dismisses or fails to prosecute. The specific procedural trigger is not disclosed in the public record, but the cost award suggests the court recognised Ming D&Y as the prevailing party for cost purposes under applicable rules.
The complaint identified eight Amazon ASIN numbers: B08Q86VTNN, B08LK553ND, B098XWJZ99, B098XX3SKC, B098XR96ZP, B098XX68Z9, B0CPP9KS2Q, and B0DHZS1XND. These ASINs represent specific product listings attributed to Ming D&Y Inc that Shenzhen Yima alleged infringed US9488325B2 covering LED dog collar technology.
Yes. Because the dismissal was without prejudice, Shenzhen Yima is not barred from re-filing claims based on US9488325B2 against Ming D&Y, provided the applicable statute of limitations period (typically six years for patent infringement under 35 U.S.C. § 286) has not elapsed for the alleged infringing acts. Ming D&Y’s cost award provides no estoppel effect on future infringement claims.
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