Putianshi Lichengqu v. Shuangfeng County Shuangwei: Design Patent Claims Dismissed With Prejudice After 876 Days
Putianshi Lichengqu Zengchangpai E-commerce Co. brought an infringement action against Shuangfeng County Shuangwei Electronic Technology Co. in the Northern District of Illinois over design patent USD959896S, covering a silicone sleeve bamboo lid. After 876 days of litigation, the plaintiff’s claims were dismissed with prejudice — a final, merits-dispositive termination — while the defendant’s counterclaim was dismissed without prejudice.
Design Patent Dispute Over Silicone Sleeve Bamboo Lid Ends Against Plaintiff
On April 27, 2023, Putianshi Lichengqu Zengchangpai E-commerce Co., Ltd., a Chinese e-commerce company, filed an infringement action in the U.S. District Court for the Northern District of Illinois against Shuangfeng County Shuangwei Electronic Technology Co., Ltd., asserting design patent USD959896S. The patent-in-suit, filed as U.S. Application No. 29/829,771, covers the ornamental design of a silicone sleeve bamboo lid — a product segment with significant competition among Asian e-commerce manufacturers and U.S. marketplace sellers.
The case closed on September 19, 2025, with the court dismissing the plaintiff’s claims with prejudice, meaning Putianshi Lichengqu is barred from re-filing the same infringement claims against Shuangfeng County Shuangwei on this patent. Simultaneously, the defendant’s counterclaim — the nature of which is not detailed in the public record — was dismissed without prejudice, leaving Shuangfeng County Shuangwei the theoretical option to reassert those claims in a future proceeding, subject to applicable limitations.
The 876-day duration suggests the case passed through meaningful procedural stages before reaching termination, though the precise mechanism driving the with-prejudice dismissal of plaintiff’s claims — whether court-ordered after adverse motion, stipulated, or following a default — is not fully apparent from the public docket summary. The asymmetric dismissal outcome, with plaintiff’s claims extinguished on the merits bar and defendant’s counterclaim left open, is commercially significant: it strongly favors the defendant’s litigation posture and may reflect a substantive deficiency in the plaintiff’s infringement or standing position.
Filing to Case Dismissed in 876 days
876 days — well above the median district court patent case duration of roughly 700 days to termination
Claims dismissed with prejudice: what the asymmetric outcome means for both parties
Dismissal with prejudice: a final, merits-dispositive bar
A dismissal with prejudice is one of the most consequential terminations in U.S. civil litigation. It operates as an adjudication on the merits, barring the plaintiff from re-filing the same claims against the same defendant. Putianshi Lichengqu cannot pursue Shuangfeng County Shuangwei again on USD959896S for the same alleged infringement. This outcome typically follows a failed motion on the merits, a court sanction, or a stipulation by the parties under Rule 41(a)(2).
Merits bar — no re-filingPlaintiff loses enforcement rights against this defendant
Putianshi Lichengqu’s design patent USD959896S remains nominally in force, but the with-prejudice dismissal forecloses any future infringement action against Shuangfeng County Shuangwei on the same facts. The plaintiff retains the right to enforce the patent against other parties, but the reputational and commercial signal of a with-prejudice loss may complicate future enforcement efforts — particularly in competitive e-commerce product categories where design patent portfolios are frequently tested.
Patent survives; enforcement blocked hereDefendant’s counterclaim left open — strategic optionality preserved
Shuangfeng County Shuangwei’s counterclaim was dismissed without prejudice, meaning the court did not adjudicate it on the merits. The defendant retains the ability to reassert those claims — which may include invalidity or unenforceability arguments — in a future proceeding, subject to statutes of limitations and other procedural constraints. This asymmetric outcome suggests the defendant is in a materially stronger post-litigation position than the plaintiff.
Counterclaim preserved for future actionDesign patent enforcement in competitive e-commerce product markets
This case is consistent with a broader pattern of Chinese-origin design patent enforcement actions filed in U.S. district courts targeting competing marketplace sellers. The with-prejudice outcome against the asserting party signals the risks of offensive design patent litigation where standing, claim scope, or infringement analysis may be difficult to sustain through full litigation. Companies operating in the silicone kitchenware and bamboo accessory segment should monitor both design patent filings and dismissal outcomes to calibrate their FTO exposure accurately.
E-commerce design patent riskFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Putianshi Lichengqu Zengchangpai E-commerce Co., Ltd. | Company | Chinese e-commerce company — holder of design patent USD959896S (silicone sleeve bamboo lid)Search in Eureka ↗ |
| Defendant | Shuangfeng County Shuangwei Electronic Technology Co., Ltd. | Company | Chinese electronics and consumer goods manufacturer accused of infringing ornamental design patent USD959896SSearch in Eureka ↗ |
| Plaintiff counsel | Adam Edward Urbanczyk | Attorney | Counsel for Putianshi Lichengqu Zengchangpai E-commerce Co., Ltd.Search in Eureka ↗ |
| Plaintiff counsel | Brian Swift | Attorney | Counsel for Putianshi Lichengqu Zengchangpai E-commerce Co., Ltd.Search in Eureka ↗ |
| Plaintiff counsel | Hao Ni | Attorney | Counsel for Putianshi Lichengqu Zengchangpai E-commerce Co., Ltd.Search in Eureka ↗ |
| Plaintiff counsel | Tong Jin | Attorney | Counsel for Putianshi Lichengqu Zengchangpai E-commerce Co., Ltd.Search in Eureka ↗ |
| Plaintiff law firm | Au LLC | Law Firm | Representing Putianshi Lichengqu Zengchangpai E-commerce Co., Ltd.Search in Eureka ↗ |
| Plaintiff law firm | Ni Wang & Massand, PLLC | Law Firm | Representing Putianshi Lichengqu Zengchangpai E-commerce Co., Ltd.Search in Eureka ↗ |
| Defendant counsel | Kevin John Keener | Attorney | Counsel for Shuangfeng County Shuangwei Electronic Technology Co., Ltd.Search in Eureka ↗ |
| Defendant counsel | Rishi Nair | Attorney | Counsel for Shuangfeng County Shuangwei Electronic Technology Co., Ltd.Search in Eureka ↗ |
| Defendant law firm | Keener & Associates PC | Law Firm | Representing Shuangfeng County Shuangwei Electronic Technology Co., Ltd.Search in Eureka ↗ |
| Defendant law firm | Nair Law LLC | Law Firm | Representing Shuangfeng County Shuangwei Electronic Technology Co., Ltd.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Illinois Northern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The verdict as recorded presents a split disposition: plaintiff’s claims are extinguished on a with-prejudice basis while defendant’s counterclaim is preserved via a without-prejudice dismissal. This asymmetry is legally meaningful — the with-prejudice component carries res judicata effect, permanently barring relitigation of these infringement claims between these parties. The without-prejudice component on the counterclaim implies no merits adjudication was reached on the defendant’s affirmative claims, leaving those issues unresolved. The phrasing suggests a negotiated or court-ordered resolution that favored the defendant’s litigation posture without fully closing the procedural record on all disputed issues.
USD959896S — Ornamental Design for a Silicone Sleeve Bamboo Lid
USD959896S, filed as U.S. Design Application No. 29/829,771, protects the ornamental appearance of a silicone sleeve bamboo lid — a product typically used as a covering accessory for beverage containers, combining a bamboo or bamboo-composite lid element with a silicone sleeve or band. Design patents under 35 U.S.C. § 171 protect only the novel, ornamental characteristics of an article’s appearance, not its functional attributes. The scope of protection is determined by comparing the claimed design against the prior art and the accused product’s overall visual impression.
The silicone sleeve bamboo lid category sits within a highly competitive, commodity-adjacent segment of the kitchenware and drinkware accessories market, where numerous manufacturers — predominantly based in China — produce visually similar products for sale on U.S. e-commerce platforms. Design patents in this space are frequently asserted offensively to disrupt competitors on Amazon and similar marketplaces. The commercial value of USD959896S depends heavily on claim scope relative to the crowded prior art field; a narrow claim construction may limit enforceability even where visual similarity exists.
Should your product team run an FTO against USD959896S?
Any company designing, importing, or selling silicone sleeve bamboo lids or visually similar drinkware accessories for the U.S. market should assess freedom-to-operate against USD959896S. Although the plaintiff’s claims against Shuangfeng County Shuangwei were dismissed with prejudice, the patent itself remains in force and could be asserted against other parties. The with-prejudice dismissal does not constitute a finding of invalidity — it binds only the two named parties in this action.
PatSnap Eureka’s FTO Search Agent enables R&D and product teams to run rapid design patent clearance searches across the USPTO design patent corpus, identify visually proximate prior art that may narrow USD959896S’s claim scope, and monitor the patent’s assignment and litigation history for enforcement signals. For teams sourcing kitchenware accessories from Chinese manufacturers, proactive FTO review before U.S. market entry significantly reduces downstream litigation exposure.
Run a freedom-to-operate analysis on USD0959896S to assess your product’s exposure
Run FTO in Eureka →Similar Design Patent Infringement Cases in the Northern District of Illinois
Explore comparable kitchenware and consumer goods design patent infringement actions filed in the Northern District of Illinois involving e-commerce marketplace disputes.
What this case signals for the kitchenware design patent IP landscape
An asymmetric dismissal outcome in a cross-border design patent dispute carries implications well beyond the two named parties.
With-prejudice dismissal limits plaintiff’s future enforcement on USD959896S
Putianshi Lichengqu is now barred from re-filing infringement claims against Shuangfeng County Shuangwei on this patent. Any competitor currently holding a similar design patent — or defending against one — should note that a with-prejudice outcome does not invalidate the patent but significantly narrows the asserting party’s enforcement leverage against the named defendant going forward.
Defendant’s preserved counterclaim is a latent threat to patent validity
The without-prejudice dismissal of the counterclaim means Shuangfeng County Shuangwei could potentially re-assert invalidity or other defenses in a future forum. Third parties in the silicone sleeve and bamboo lid product category should track whether a validity challenge is eventually pursued, as a successful invalidation of USD959896S would clear the field for the entire competitive set.
Putianshi v Shuangfeng — key questions answered
A dismissal with prejudice bars Putianshi Lichengqu from re-filing the same infringement claims against Shuangfeng County Shuangwei on design patent USD959896S. It operates as an adjudication on the merits under res judicata principles, meaning the claims are permanently extinguished as between these parties. The patent itself remains in force against third parties.
Yes. The with-prejudice dismissal of the plaintiff’s claims does not constitute a finding that USD959896S is invalid or unenforceable. The patent remains active and could be asserted against other parties. However, Putianshi Lichengqu cannot use it to sue Shuangfeng County Shuangwei again on the same infringement allegations.
The public record does not specify the precise reason. A without-prejudice dismissal of a counterclaim typically occurs when the court declines to exercise supplemental jurisdiction after the main claims are resolved, or when the parties agree to dismiss the counterclaim without adjudicating its merits. It leaves the defendant the theoretical ability to reassert those claims in a future proceeding.
The case was filed in the U.S. District Court for the Northern District of Illinois (Case No. 1:23-cv-02650) on April 27, 2023, and closed on September 19, 2025, after 876 days. The Northern District of Illinois is a frequent venue for e-commerce-related patent infringement actions involving Chinese marketplace sellers.
USD959896S, corresponding to U.S. Design Application No. 29/829,771, covers the ornamental design of a silicone sleeve bamboo lid — a kitchenware accessory typically used as a lid or cover for beverage containers, incorporating both bamboo and silicone elements. The patent protects only the article’s ornamental appearance, not its functional characteristics.
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