Guangzhou Mibo v. Shenzhen Jing Hong: Design Patent Dismissed in 23 Days
Guangzhou Mibo Zhilian Technology Co., Ltd filed suit against Shenzhen Jing Hong Tech Co., Ltd in the Northern District of Illinois, asserting design patent USD1006260S covering a metal rod. The plaintiff voluntarily dismissed the action without prejudice under Rule 41 — just 23 days after filing.
A 23-Day Design Patent Dispute Over a Metal Rod
On May 6, 2025, Guangzhou Mibo Zhilian Technology Co., Ltd filed an infringement action in the U.S. District Court for the Northern District of Illinois against Shenzhen Jing Hong Tech Co., Ltd. The asserted intellectual property is USD1006260S, a U.S. design patent protecting the ornamental appearance of a metal rod (application no. 29/809190). Both parties are Chinese technology companies, a pattern increasingly common in U.S. federal patent litigation as Chinese firms enforce IP rights against one another on American soil.
The case closed on May 29, 2025 — just 23 days after filing — when plaintiff Guangzhou Mibo invoked Federal Rule of Civil Procedure 41(a)(1)(a)(i) to voluntarily dismiss the action without prejudice. This procedural mechanism allows a plaintiff to withdraw its complaint as of right before the defendant serves an answer or a motion for summary judgment. The public record does not disclose whether a settlement, licensing agreement, or other commercial resolution prompted the dismissal.
A 23-day lifespan is exceptionally brief even by the standards of early-exit patent cases, suggesting the parties may have moved swiftly to an off-court resolution. Alternatively, the plaintiff may have identified a strategic or procedural reason to withdraw and refile. Because dismissal was without prejudice, Guangzhou Mibo retains the right to reassert its design patent claims against Shenzhen Jing Hong in a future action, subject to applicable statutes of limitations. What drove the rapid resolution remains unknown from the publicly available docket.
Filing to Voluntary dismissal in 23 days
23 days — well below the median district court patent case duration of several years
Voluntarily dismissed: what the Rule 41 exit means for both parties
Rule 41(a)(1)(a)(i): plaintiff’s right to exit without court approval
Under Federal Rule of Civil Procedure 41(a)(1)(a)(i), a plaintiff may dismiss its own action as of right — without a court order — provided the defendant has not yet served an answer or a motion for summary judgment. This is a unilateral procedural tool. No judicial merits review occurs, and no findings on infringement, validity, or damages are made. The case simply terminates at the plaintiff’s election.
No merits adjudicationWithout prejudice — but what does that actually mean here?
A dismissal ‘without prejudice’ preserves the plaintiff’s right to refile the same claims in a future action. A dismissal ‘with prejudice’ would bar refiling permanently. This case was dismissed without prejudice. Critically, the public record does not state whether a settlement or license was reached. If a confidential agreement exists, refiling may be contractually foreclosed even if legally available. Without access to any private terms, that question cannot be answered from the docket alone.
Refiling rights preservedShenzhen Jing Hong faces no injunction — but the threat persists
Shenzhen Jing Hong Tech Co., Ltd exits this case with no adverse judgment, no injunction, and no damages award. However, because dismissal is without prejudice, the defendant cannot treat this as a final resolution. Guangzhou Mibo retains the ability to reassert USD1006260S. The defendant would be prudent to assess its product design relative to the asserted patent, regardless of the absence of a court ruling.
No judgment; risk remainsQuick exits in Chinese-on-Chinese IP disputes signal a growing trend
This case is part of a visible pattern of Chinese manufacturers asserting U.S. design patents against one another in federal court — often in the Northern District of Illinois. Many such cases resolve rapidly, consistent with off-court commercial negotiations. For product teams and importers operating in the metal hardware and consumer goods space, the speed of this exit suggests design patent enforcement in this sector can move quickly and may be resolved through licensing channels before any substantive litigation.
Design patent enforcement trendFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Guangzhou Mibo Zhilian Technology Co., Ltd | Company | Chinese consumer technology company — holder of design patent USD1006260SSearch in Eureka ↗ |
| Defendant | Shenzhen Jing Hong Tech Co., Ltd | Company | Shenzhen Jing Hong Tech Co., Ltd — Chinese technology company accused of infringing metal rod design patentSearch in Eureka ↗ |
| Plaintiff counsel | Ruoting Men | Attorney | Counsel for Guangzhou Mibo Zhilian Technology Co., LtdSearch in Eureka ↗ |
| Plaintiff counsel | Tao Liu | Attorney | Counsel for Guangzhou Mibo Zhilian Technology Co., LtdSearch in Eureka ↗ |
| Plaintiff law firm | Glacier Law LLP | Law Firm | Representing Guangzhou Mibo Zhilian Technology Co., LtdSearch in Eureka ↗ |
| Defendant counsel | Hongchang Deng | Attorney | Counsel for Shenzhen Jing Hong Tech Co., LtdSearch in Eureka ↗ |
| Defendant law firm | SHM Law Firm | Law Firm | Representing Shenzhen Jing Hong Tech Co., LtdSearch in Eureka ↗ |
| Presiding judge | Judge John J. Tharp, Jr. | Judge | Illinois Northern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The dismissal was filed by plaintiff Guangzhou Mibo under Rule 41(a)(1)(a)(i) — the narrowest, most unilateral form of voluntary dismissal available in federal practice. Because it predates any answer or dispositive motion from Shenzhen Jing Hong, it requires no court approval and produces no ruling on the merits of the infringement claim. The ‘without prejudice’ designation means USD1006260S remains a live enforcement risk for the defendant and any similarly situated product manufacturers.
USD1006260S — Ornamental Design for a Metal Rod
USD1006260S is a U.S. design patent, filed under application number 29/809190, protecting the ornamental appearance of a metal rod. Design patents issued under 35 U.S.C. § 171 grant exclusive rights to the non-functional, visual characteristics of an article of manufacture. The scope of protection is defined by the drawings in the patent — any product whose overall appearance is substantially similar to the claimed design may infringe, applying the ‘ordinary observer’ test established in Egyptian Goddess v. Swisa.
Metal rod designs are commercially significant in categories including furniture hardware, fitness equipment, tool components, and consumer accessories — sectors where visual differentiation drives purchasing decisions and where Chinese manufacturers compete intensively on both design and price. A design patent in this space can function as a market-access barrier or licensing leverage tool against competing manufacturers. The assertion of USD1006260S in U.S. federal court signals that Guangzhou Mibo is actively monitoring the market and willing to use IP enforcement to protect its commercial position.
Should your team run an FTO against USD1006260S?
Any manufacturer, importer, or distributor of metal rod products — or products incorporating metal rod components with a similar ornamental profile — should consider a freedom-to-operate assessment against USD1006260S. U.S. design patent infringement does not require intent; if your product’s appearance is substantially similar to the claimed design as perceived by an ordinary observer, infringement may exist regardless of independent creation. Given that this patent has already been asserted in federal litigation, the enforcement risk is not theoretical.
PatSnap Eureka’s FTO Search Agent allows R&D and product teams to map the visual claim scope of USD1006260S against your product configurations, identify prior art that may inform validity challenges, and flag related design patent families held by Guangzhou Mibo. Eureka can also surface prosecution history for application 29/809190, helping you understand which design elements were amended or disclaimed during examination — critical context for any design-around strategy.
Run a freedom-to-operate analysis on USD1006260S to assess your product’s exposure
Run FTO in Eureka →Similar Design Patent Cases in the Northern District of Illinois
Explore related design patent infringement actions in the N.D. Illinois involving Chinese parties and consumer hardware products — cases with comparable enforcement patterns and outcomes.
What this case signals for the design patent IP landscape
Short-lived U.S. design patent suits between Chinese manufacturers are reshaping enforcement strategy in consumer hardware categories.
Without-prejudice exits preserve future enforcement leverage
Guangzhou Mibo retains full rights to refile against Shenzhen Jing Hong under USD1006260S. Companies receiving a Rule 41 voluntary dismissal without prejudice should not treat it as a clearance signal — the asserted patent remains valid and enforceable, and the plaintiff may return with a stronger evidentiary record or after further design analysis.
Northern District of Illinois is a recurring venue for Chinese design patent disputes
The N.D. Illinois, particularly its Chicago division, has become a preferred filing venue for Chinese IP holders pursuing infringement claims against other Chinese companies in the U.S. market. IP teams monitoring competitive activity in consumer hardware, accessories, and metal components should track filings in this district as an early-warning signal of design patent enforcement campaigns.
Guangzhou v Shenzhen — key questions answered
Guangzhou Mibo Zhilian Technology Co., Ltd filed a design patent infringement action against Shenzhen Jing Hong Tech Co., Ltd in the Northern District of Illinois on May 6, 2025, asserting USD1006260S (a metal rod design). The plaintiff voluntarily dismissed the case without prejudice under Rule 41(a)(1)(a)(i) on May 29, 2025 — 23 days after filing — with no merits ruling issued.
A voluntary dismissal without prejudice under Rule 41(a)(1)(a)(i) means Guangzhou Mibo withdrew its complaint before Shenzhen Jing Hong filed an answer. No court order was required, no findings on infringement or validity were made, and the plaintiff retains the right to refile the same claims in a future action. The defendant faces no judgment but the legal threat is not permanently extinguished.
USD1006260S is a U.S. design patent filed under application number 29/809190, covering the ornamental appearance of a metal rod. U.S. design patents protect non-functional visual characteristics under 35 U.S.C. § 171. Infringement is assessed using the ‘ordinary observer’ test — whether an ordinary observer would believe the accused product is the same as the patented design.
The Northern District of Illinois, particularly its Chicago division, has become a recurring venue for Chinese IP holders asserting U.S. patent rights against other Chinese companies. The district’s procedural familiarity, accessible filing infrastructure, and established case law make it a strategically attractive venue for this type of dispute. The case does not disclose specific jurisdictional facts beyond the court’s general federal patent jurisdiction.
Yes. Because the dismissal was without prejudice, Guangzhou Mibo may refile claims based on USD1006260S against Shenzhen Jing Hong, subject to the applicable statute of limitations for patent infringement (generally six years under 35 U.S.C. § 286) and any private contractual terms that may have been agreed between the parties but are not reflected in the public docket.
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