Taizhou Luqiao v. Dbest Products: Stackable Cart Patent Case Dismissed With Prejudice
Taizhou Luqiao Shengqiang Housewares Factory brought a patent infringement action against Dbest Products Inc. in the Central District of California, asserting US12103576B2 covering stackable collapsible cart technology. The parties reached a private settlement within 225 days, closing the case with prejudice and court-retained jurisdiction to enforce settlement terms.
Housewares patent clash resolves quietly via negotiated settlement
On 17 December 2024, Taizhou Luqiao Shengqiang Housewares Factory, a Chinese housewares manufacturer, filed a patent infringement action against Dbest Products Inc. in the United States District Court for the Central District of California (Case No. 2:24-cv-10842). The asserted patent — US12103576B2 — covers stackable collapsible carts, a product category with a large and competitive consumer market. Dbest Products, represented by Orbit IP LLP, was identified as the infringing party.
The case closed on 30 July 2025, following a Joint Stipulation of Dismissal with Prejudice filed by both parties. The court’s order dismissed all claims asserted by both sides with prejudice and vacated all pending proceedings. Critically, the court expressly retained jurisdiction to enforce the terms of an underlying settlement agreement — a standard mechanism that transforms a private deal into a court-enforceable obligation, giving each party recourse if the other defaults.
A resolution in 225 days is consistent with early-stage settlement dynamics in patent cases, suggesting the parties likely reached agreement before significant discovery or claim construction activity. The confidential nature of the settlement means financial terms, licensing arrangements, and any product design-around commitments remain unknown from the public record. The with-prejudice dismissal and jurisdiction-retention clause together suggest a structured, commercially negotiated resolution rather than a simple walk-away.
Filing to Dismissed with Prejudice in 225 days
225-day resolution — faster than the median patent case lifespan in C.D. Cal.
Dismissed with prejudice: what the joint stipulation means for both parties
Joint stipulation of dismissal with prejudice explained
A joint stipulation of dismissal with prejudice is a mutual agreement by both parties to end litigation permanently. Unlike a unilateral dismissal, this requires consent from all sides. ‘With prejudice’ means neither party can refile the same claims — the legal dispute over US12103576B2 as framed in this case is permanently extinguished. The court’s additional retention of jurisdiction to enforce the settlement is the operative legal anchor that keeps both parties accountable.
Fed. R. Civ. P. 41(a)(1)(A)(ii)Taizhou Luqiao secures a binding, enforceable resolution
As the plaintiff and patent holder, Taizhou Luqiao appears to have achieved a commercially negotiated outcome — likely including licensing terms, royalties, or a product modification commitment from Dbest. The with-prejudice dismissal and court-retained jurisdiction suggest Taizhou received sufficient consideration to close the case. US12103576B2 remains valid and enforceable against other parties — this dismissal does not affect its status.
Patent remains enforceableDbest Products avoids judgment but accepts binding settlement terms
Dbest Products avoids a merits adjudication — there is no finding of infringement on the public record. However, the with-prejudice dismissal and court-retained jurisdiction indicate Dbest has accepted binding obligations under the settlement agreement. Non-compliance could be enforced directly by the court. The nature of those obligations — royalties, design changes, injunctive terms — is not disclosed in the public record.
No public infringement findingStackable cart IP landscape: enforcement signal for the sector
This case signals that US12103576B2 is an actively enforced patent in the stackable collapsible cart category. Competitors and retailers operating in the same space — particularly those importing or selling similar compact cart designs — should treat this resolution as a credible enforcement signal. The swift settlement timeline suggests the patent holder views litigation as a viable commercial lever, and may pursue additional defendants.
Active enforcement signalFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Taizhou Luqiao Shengqiang Housewares Factory | Individual | Chinese housewares manufacturer — holder of US12103576B2 (stackable collapsible carts)Search in Eureka ↗ |
| Defendant | Dbest Products Inc. | Company | Dbest Products Inc. — U.S. consumer products company in the portable cart and storage segmentSearch in Eureka ↗ |
| Plaintiff counsel | Jing Chen | Attorney | Counsel for Taizhou Luqiao Shengqiang Housewares FactorySearch in Eureka ↗ |
| Plaintiff counsel | Qianwu Yang | Attorney | Counsel for Taizhou Luqiao Shengqiang Housewares FactorySearch in Eureka ↗ |
| Plaintiff counsel | Yi Yi | Attorney | Counsel for Taizhou Luqiao Shengqiang Housewares FactorySearch in Eureka ↗ |
| Plaintiff law firm | Lantai Partners Law Firm | Law Firm | Representing Taizhou Luqiao Shengqiang Housewares FactorySearch in Eureka ↗ |
| Plaintiff law firm | SHM Law Firm | Law Firm | Representing Taizhou Luqiao Shengqiang Housewares FactorySearch in Eureka ↗ |
| Defendant counsel | Ehab M. Samuel | Attorney | Counsel for Dbest Products Inc.Search in Eureka ↗ |
| Defendant law firm | Orbit IP LLP | Law Firm | Representing Dbest Products Inc.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | California Central District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s order reflects a consent-based closure rather than any merits determination. The phrase ‘resolved by a Joint Stipulation of Dismissal with Prejudice’ confirms both parties agreed to end all claims permanently. The court’s express retention of jurisdiction to enforce the settlement agreement is legally significant — it means any dispute over settlement compliance bypasses a new filing and proceeds directly before the same judge, typically as a contempt or enforcement motion. No infringement finding was made.
US12103576B2 — stackable collapsible cart design and structure
US12103576B2 covers stackable collapsible cart technology — a product category encompassing portable, foldable shopping and storage carts designed to nest or stack for space-efficient storage. The application number US18/542495 suggests a relatively recent filing, consistent with the competitive intensity in the portable cart market driven by e-commerce and warehouse retail trends. The patent is held by Taizhou Luqiao Shengqiang Housewares Factory, a manufacturer based in Zhejiang Province, China.
The stackable collapsible cart market is highly contested, with numerous SKUs sold through Amazon, Costco, and direct-to-consumer channels. A U.S. utility patent in this space — successfully asserted to force a commercial settlement — signals meaningful claim scope. Competitors designing or importing similar products face non-trivial freedom-to-operate risk if their designs share structural or functional features with the claims of US12103576B2. The patent’s enforceability is confirmed by this litigation’s outcome.
Should you run an FTO analysis against US12103576B2?
Any company designing, importing, distributing, or retailing stackable or collapsible cart products in the U.S. market should consider a freedom-to-operate review against US12103576B2. The patent has now been actively enforced to commercial resolution — meaning the holder has demonstrated both the willingness and capability to litigate. Retailers sourcing from third-party OEMs should also verify whether their suppliers’ products are covered by or design-around the claims.
PatSnap Eureka’s FTO Search Agent enables IP teams to map the independent claims of US12103576B2 against product specifications and identify design-around opportunities or non-infringement arguments. Eureka can also surface continuation applications, related family members, and any pending prosecution that could broaden claim scope — giving your legal and R&D teams early warning of an expanding patent footprint in the portable storage category.
Run a freedom-to-operate analysis on US12103576B2 to assess your product’s exposure
Run FTO in Eureka →Similar patent cases: collapsible cart and portable storage disputes in C.D. Cal.
Cases involving stackable and collapsible consumer product patents in the Central District of California, with comparable OEM-plaintiff enforcement profiles.
What this case signals for the consumer housewares IP landscape
A Chinese OEM asserting U.S. patent rights against a domestic distributor in C.D. Cal. reflects a growing enforcement pattern in the portable storage sector.
OEM-to-distributor patent enforcement is rising in housewares
Taizhou Luqiao’s willingness to assert US12103576B2 in federal court against a U.S. distributor is consistent with a broader trend of Chinese manufacturers using U.S. IP rights offensively. Companies selling stackable or collapsible cart products should audit their supply chain for potential exposure to this patent family.
Court-retained jurisdiction raises the stakes of settlement defaults
The judge’s explicit retention of jurisdiction to enforce settlement terms elevates any future breach to a contempt-of-court risk, not merely a contract dispute. For Dbest, this creates a strong structural incentive to comply — and for Taizhou, a lower-cost enforcement path if obligations are not met.
Factory v Dbest — key questions answered
The case was dismissed with prejudice on 30 July 2025 following a joint stipulation of dismissal. Both parties reached a private settlement. The court retained jurisdiction to enforce the settlement agreement. No infringement finding was entered on the public record.
The asserted patent is US12103576B2 (application number US18/542495), held by Taizhou Luqiao Shengqiang Housewares Factory. The patent relates to stackable collapsible carts — a portable consumer storage and transport product category.
Dismissed with prejudice means all claims asserted in Case No. 2:24-cv-10842 are permanently extinguished — neither party can refile the same claims in future litigation. It is typically the outcome of a negotiated settlement in which the plaintiff receives sufficient consideration to forgo its legal claims permanently.
The court’s retention of jurisdiction over the settlement agreement is a standard mechanism that enables either party to enforce the settlement’s terms directly before the same judge, without filing a new lawsuit. It transforms the private agreement into a court-supervised obligation and signals a structured, multi-term settlement rather than a simple walkaway.
No. A dismissal with prejudice under a joint stipulation does not affect the validity or enforceability of US12103576B2 against third parties. The patent remains in force and can be asserted in separate actions. The settlement confirms the patent was considered credible enough to warrant commercial resolution rather than a validity challenge.
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