dbest products v. Dongguan Laiyang: Portable Cart Patent Suit Dismissed, Claims Consolidated
dbest products filed infringement claims against Dongguan Laiyang Trading Co. in the Central District of California, asserting two portable cart patents. After 107 days, dbest voluntarily dismissed without prejudice under Rule 41(a)(1)(A)(i), consolidating all claims into the parallel iBeauty Action (Case No. 2:24-cv-10694).
Portable cart patent suit consolidated into broader iBeauty dispute
On May 21, 2025, dbest products, Inc. filed a patent infringement action against Dongguan Laiyang Trading Co., Ltd. in the U.S. District Court for the Central District of California (Case No. 2:25-cv-04586). The complaint asserted two patents — US12275446B2 and US12304546B1 — covering portable cart technology. Dongguan Laiyang, a China-based trading company, never filed an answer or motion for summary judgment during the case’s 107-day lifespan.
On September 5, 2025, dbest voluntarily dismissed the action without prejudice pursuant to Fed. R. Civ. P. 41(a)(1)(A)(i). The dismissal was procedurally straightforward: because the defendant had not yet answered or moved for summary judgment, dbest could dismiss unilaterally without court approval. The dismissal order specified that each party would bear its own costs, fees, and expenses. Critically, dbest simultaneously incorporated its claims from this case as counterclaims in the related iBeauty Limited Co. et al. v. dbest products, Inc. action (Case No. 2:24-cv-10694-MWC-JC).
The 107-day duration and pre-answer dismissal suggest dbest determined that consolidating its patent claims into the already-pending iBeauty Action offered a more efficient path to enforcement. A related Northern District action filed by iBeauty (Case No. 3:25-cv-05344-JD) was also voluntarily dismissed after dbest moved to transfer it. What remains unknown from the public record is whether any licensing discussions occurred or whether the consolidation reflects a broader litigation strategy against the iBeauty-affiliated product supply chain.
Filing to Voluntary dismissal in 107 days
107-day lifespan — resolved before any responsive pleading was filed by defendant
Voluntarily dismissed: what the Rule 41 exit means for both parties
Rule 41(a)(1)(A)(i): unilateral dismissal before answer
Fed. R. Civ. P. 41(a)(1)(A)(i) permits a plaintiff to dismiss an action without court order if the defendant has not yet served an answer or a motion for summary judgment. Here, Dongguan Laiyang filed neither, giving dbest the procedural right to exit cleanly. The dismissal is self-executing upon filing — no judicial approval required. This mechanism is routinely used when a plaintiff consolidates overlapping claims into a single, more strategically positioned action.
Pre-answer voluntary dismissalClaims survive — but where do they live now?
A dismissal without prejudice does not extinguish the underlying patent claims. dbest retains the right to re-assert US12275446B2 and US12304546B1 against Dongguan Laiyang in the future. However, the public record confirms that dbest has already reasserted these claims as counterclaims in the iBeauty Action (2:24-cv-10694). The practical effect is claim migration, not abandonment. Whether Dongguan Laiyang remains a named party in the iBeauty Action is not confirmed by this record alone.
Claims reasserted in iBeauty ActionDongguan Laiyang: no merits ruling, but exposure continues
Because the dismissal is without prejudice, Dongguan Laiyang received no favourable merits determination. The company avoided an answer obligation in this specific case, but dbest’s patent claims remain active in the iBeauty Action. Dongguan Laiyang faces continued patent exposure in a consolidated proceeding that may be more complex and resource-intensive than this standalone action. The cost-neutral dismissal terms mean neither party gains a financial advantage from this proceeding.
No merits ruling; exposure persistsConsolidation strategy: dbest concentrates portable cart IP enforcement
The filing and rapid voluntary dismissal of this case — combined with dbest’s successful move to collapse a Northern District action back into the iBeauty proceeding — suggests a deliberate consolidation strategy. For portable cart competitors and importers, this signals that dbest is actively enforcing its patent portfolio through coordinated, multi-party proceedings rather than isolated bilateral suits. The iBeauty Action is the venue to watch for final merits determinations on these two patents.
Watch iBeauty Action 2:24-cv-10694Full party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | dbest products, Inc. | Company | Portable cart manufacturer and innovator — holder of US12275446B2 and US12304546B1Search in Eureka ↗ |
| Defendant | Dongguan Laiyang Trading Co., Ltd. | Company | Dongguan Laiyang Trading Co., Ltd. — China-based trading company in portable cart categorySearch in Eureka ↗ |
| Plaintiff counsel | Bruce G. Chapman | Attorney | Counsel for dbest products, Inc.Search in Eureka ↗ |
| Plaintiff counsel | David A. Randall | Attorney | Counsel for dbest products, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Ehab M. Samuel | Attorney | Counsel for dbest products, Inc.Search in Eureka ↗ |
| Plaintiff 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 dismissal notice explicitly invokes Rule 41(a)(1)(A)(i) and confirms the absence of any answer or dispositive motion from Dongguan Laiyang — prerequisites that made unilateral dismissal available. Critically, the filing acknowledges that all claims from this action have been incorporated as counterclaims in the iBeauty Action, and that a related Northern District filing was itself dismissed after dbest’s transfer motion. This is not a neutral procedural exit: the language ‘to promote judicial efficiency and conserve party resources’ signals an affirmative consolidation strategy, not bilateral agreement or settlement.
US12275446B2 & US12304546B1 — Portable Cart Technology Patents
US12275446B2 and US12304546B1 are both asserted patents in the portable cart technology space, filed under application numbers US18/460131 and US19/032431 respectively. The relatively recent application numbers suggest these patents were prosecuted and issued within the past several years, consistent with dbest’s active portfolio development strategy. Portable cart patents in this category typically protect structural innovations such as folding mechanisms, load distribution systems, and modular frame configurations relevant to consumer and commercial wheeled cart products.
For competitors and importers in the portable cart category — including e-commerce sellers sourcing from Chinese manufacturers — these two patents represent active enforcement risk. The fact that dbest reasserted both in the iBeauty Action rather than abandoning them underscores their perceived commercial value. The simultaneous assertion of two patents increases the complexity of any invalidity or non-infringement defence, as a challenger must successfully address each patent independently. Companies marketing comparable portable cart products in the U.S. should treat these assets as live enforcement instruments.
Should you run an FTO against US12275446B2 and US12304546B1?
Any company designing, importing, or distributing portable carts in the U.S. market should assess freedom-to-operate against both US12275446B2 and US12304546B1. The iBeauty Action confirms these patents are actively litigated in the Central District of California. E-commerce operators, OEM suppliers, and private-label cart brands sourcing from China are particularly exposed, given the defendant profile in this case and the broader iBeauty proceeding.
PatSnap Eureka’s FTO Search Agent allows R&D and product teams to map claim scope across both asserted patents, identify prior art relevant to validity challenges, and benchmark against dbest’s broader portfolio. Running a proactive FTO now — before the iBeauty Action produces claim construction rulings — gives design teams the lead time to implement design-arounds or build invalidity arguments before litigation posture hardens.
Run a freedom-to-operate analysis on US12275446B2 to assess your product’s exposure
Run FTO in Eureka →Similar portable cart patent infringement cases in federal district courts
Related patent infringement actions involving portable cart technology litigated in the Central District of California, including cases involving dbest products’ IP portfolio.
What this case signals for the portable cart IP enforcement landscape
dbest’s coordinated dismissal and consolidation move reveals a centralised enforcement posture that competitors and importers should monitor closely.
Pre-answer dismissal is a valid consolidation tool — not a retreat
When a patent holder files multiple related actions and then voluntarily dismisses one without prejudice, it does not signal weakness. Here, dbest used Rule 41(a)(1)(A)(i) strategically to funnel all claims into a single proceeding. IP teams facing similar multi-front disputes should assess whether consolidation into a lead case offers procedural and cost advantages before defaulting to parallel litigation tracks.
The iBeauty Action is now the controlling proceeding for these patents
US12275446B2 and US12304546B1 will be adjudicated on the merits in Case No. 2:24-cv-10694-MWC-JC. Any party in the portable cart supply chain — importers, distributors, or OEM suppliers — should monitor that docket for claim construction rulings, invalidity findings, and injunctive relief orders that could directly affect product freedom to operate.
dbest v Dongguan — key questions answered
dbest products filed a patent infringement action against Dongguan Laiyang Trading Co. in the Central District of California on May 21, 2025. The case was voluntarily dismissed without prejudice on September 5, 2025, after 107 days, with dbest consolidating its claims as counterclaims in the related iBeauty Action (Case No. 2:24-cv-10694-MWC-JC). No answer was filed by the defendant.
dbest asserted two patents: US12275446B2 (application no. US18/460131) and US12304546B1 (application no. US19/032431). Both patents cover portable cart technology. They were subsequently reasserted as counterclaims in the iBeauty Action, Case No. 2:24-cv-10694-MWC-JC, in the Central District of California.
A voluntary dismissal without prejudice under Rule 41(a)(1)(A)(i) means dbest’s patent infringement claims were not decided on the merits. dbest retains the right to re-assert the same claims in future proceedings. Here, the practical consequence is that the claims have already been reasserted in the iBeauty Action, so no enforcement rights were waived.
The iBeauty Action refers to iBeauty Limited Co. et al. v. dbest products, Inc., Case No. 2:24-cv-10694-MWC-JC, also in the Central District of California. dbest incorporated its portable cart patent claims from this case as counterclaims in that proceeding. The iBeauty Action is the operative proceeding where US12275446B2 and US12304546B1 will be adjudicated on the merits.
No merits determination was made in favour of Dongguan Laiyang. The dismissal was without prejudice, meaning the defendant received no favourable ruling on infringement or validity. The cost-neutral terms mean neither party was awarded fees. dbest’s patent claims remain active in the iBeauty Action, and Dongguan Laiyang’s exposure to those claims has not been extinguished by this dismissal.
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