Anhui Zuoyou v. Purple Innovation: Seat Cushion Design Patents Dismissed Without Prejudice
Anhui Zuoyou Intellectual Property Service Co., Ltd. filed suit against Purple Innovation, LLC in the Northern District of Illinois asserting infringement of two design patents covering seat cushion products. The case was dismissed without prejudice in just 64 days, leaving open the possibility of refiling.
Design Patent Dispute Over Seat Cushions Ends in Early Voluntary Dismissal
Anhui Zuoyou Intellectual Property Service Co., Ltd., a Chinese intellectual property services company, initiated this infringement action against Purple Innovation, LLC — the maker of the Purple seat cushion brand — in the Northern District of Illinois on July 20, 2025. The complaint asserted infringement of two U.S. design patents, USD0991706S (application no. US29/782165) and USD0990930S (application no. US29/779618), both directed to seat cushion ornamental designs. The accused products included seat cushions sold under the Angushy, LINW, Super Seat, and Yinstore brand names.
The case concluded on September 22, 2025, when plaintiff filed a voluntary dismissal under Fed. R. Civ. P. 41(a)(1)(A)(i), dismissing all claims without prejudice. This procedural mechanism — available before the defendant serves an answer or a motion for summary judgment — does not constitute an adjudication on the merits. A dismissal without prejudice means Anhui Zuoyou retains the right to bring the same claims in a future action, subject to applicable statutes of limitations and any strategic reconsideration.
The 64-day duration suggests the parties may have reached a private resolution, or that plaintiff reassessed the strength or scope of its claims following the filing. The absence of any defendant law firm on record and the early stage of dismissal — before any substantive motion practice — is consistent with either a settlement or a pre-answer strategic withdrawal. The public record does not disclose the specific terms or reasoning behind the dismissal, and no fee or cost ruling was entered.
Filing to Dismissed without Prejudice in 64 days
64 days — resolved well below the typical district court patent case timeline
Dismissed without prejudice: what the ruling means for both parties
Rule 41(a)(1)(A)(i) allows dismissal before answer is filed
Fed. R. Civ. P. 41(a)(1)(A)(i) permits a plaintiff to dismiss a complaint as of right — without court approval — before the defendant serves an answer or a motion for summary judgment. This is a unilateral procedural step, not a negotiated settlement order. Because dismissal occurs before any substantive ruling, there is no adjudication on the merits and no res judicata bar to refiling the same claims.
Voluntary dismissal — no merits rulingWithout prejudice preserves plaintiff’s right to refile
A dismissal without prejudice does not extinguish the underlying claims. Anhui Zuoyou retains the ability to bring the same design patent infringement allegations against Purple Innovation — or other defendants — in a future action. This contrasts with a dismissal with prejudice, which would operate as a final judgment on the merits. The public record does not specify whether a settlement was reached privately before the dismissal was filed.
Claims survive — refiling possiblePurple Innovation exits without any merits finding against it
Purple Innovation, LLC faces no adverse judgment, no injunction, and no damages award from this proceeding. However, because the dismissal is without prejudice, it does not receive the finality of a merits-based victory. The design patent infringement allegations remain theoretically live. Purple Innovation should monitor whether Anhui Zuoyou refiles — in this district or another — particularly if product lines or design implementations remain unchanged.
No adverse judgment — monitor for refileDesign patent enforcement in the seat cushion sector remains a live risk
This case is consistent with a broader pattern of design patent assertion against consumer product sellers in U.S. district courts, often by IP holding entities. The early withdrawal without prejudice — before any claim construction or merits ruling — means the asserted designs were never tested judicially. Companies selling seat cushions with similar ornamental designs should treat this as a signal to conduct design-around analysis against USD0991706S and USD0990930S.
Design patent risk persists in categoryFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Anhui Zuoyou Intellectual Property Service Co., Ltd., | Company | IP services company — holder of seat cushion design patents USD0991706S and USD0990930SSearch in Eureka ↗ |
| Defendant | Purple Innovation, LLC, | Company | Purple Innovation, LLC — consumer comfort products company, maker of the Purple seat cushion brandSearch in Eureka ↗ |
| Plaintiff counsel | Alexander Warden | Attorney | Counsel for Anhui Zuoyou Intellectual Property Service Co., Ltd.,Search in Eureka ↗ |
| Plaintiff law firm | West Atlantic Law Firm, PLLC. | Law Firm | Representing Anhui Zuoyou Intellectual Property Service Co., Ltd.,Search in Eureka ↗ |
| Presiding judge | Judge John Robert Blakey | Judge | Illinois Northern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The dismissal was filed unilaterally by plaintiff under Rule 41(a)(1)(A)(i), which requires no court order and carries no merits determination. The phrasing ‘without prejudice’ is legally significant: it preserves plaintiff’s full right to refile identical claims. No findings were made regarding infringement, validity, or claim scope of USD0991706S or USD0990930S. Purple Innovation receives no preclusive benefit from this outcome, and the design patents remain fully enforceable against any party.
USD0991706S & USD0990930S — Seat Cushion Ornamental Design Patents
USD0991706S (application no. US29/782165) and USD0990930S (application no. US29/779618) are U.S. design patents protecting the ornamental appearance of seat cushion products. U.S. design patents are granted for novel, non-functional visual features and carry a 15-year term from grant. The ’29/’ application prefix indicates these were filed as design applications — distinct from utility patents — and protection is limited to the ornamental design as depicted in the patent drawings.
Design patents in the consumer comfort and ergonomic seating category have become an increasingly active enforcement tool, particularly against e-commerce sellers offering visually similar products. The asserted patents cover seat cushion designs sold under multiple retail brand names — Angushy, LINW, Super Seat, and Yinstore — suggesting a broad enforcement sweep. Because these patents were never construed or tested in this proceeding, their scope and validity remain open questions relevant to all competitors in the category.
Should you run an FTO against USD0991706S and USD0990930S?
Any company developing, sourcing, or selling seat cushion products in the U.S. market should assess exposure against USD0991706S and USD0990930S. Because neither patent was adjudicated in this case, there is no court ruling providing a narrowing claim construction or invalidity finding. The dismissal without prejudice means both patents are active, enforceable, and available for reassertion — making a proactive FTO analysis commercially prudent for product teams and sourcing managers.
PatSnap Eureka’s FTO Search Agent can map the visual scope of these design patents against your product portfolio, identify prior art that could support a validity challenge, and flag other design registrations held by Anhui Zuoyou that may pose adjacent risk. This is particularly valuable for teams managing private-label or OEM seat cushion products sold on U.S. e-commerce platforms, where design patent assertions are most frequently targeted.
Run a freedom-to-operate analysis on USD0991706S to assess your product’s exposure
Run FTO in Eureka →Similar Design Patent Infringement Cases in Consumer Seat Cushion Products
Cases involving design patent assertions over seat cushion and ergonomic seating products in U.S. district courts, including the Northern District of Illinois.
What this case signals for the consumer products design patent landscape
Early dismissals without prejudice in design patent cases often mask private resolutions or reassessed enforcement positions — neither is truly benign.
Rule 41 dismissals before answer are a common enforcement signal
When a plaintiff dismisses without prejudice before any substantive response from the defendant, it typically suggests either a quick settlement or a tactical reassessment. In design patent cases involving consumer products, this pattern is frequently associated with licensing discussions that resolve outside the public record. Companies in the seat cushion and ergonomic support product categories should not treat this dismissal as a clearance signal.
USD0991706S and USD0990930S were never adjudicated — scope remains untested
No claim construction, no invalidity ruling, and no merits determination was reached in this proceeding. Both design patents remain fully enforceable as registered. Any competitor or product team relying on the absence of a court ruling to assume freedom to operate would be taking an unquantified risk. An FTO analysis against these specific design patent numbers is warranted for seat cushion product developers.
Anhui v Purple — key questions answered
Anhui Zuoyou Intellectual Property Service Co., Ltd. filed a design patent infringement action against Purple Innovation, LLC in the Northern District of Illinois on July 20, 2025. The complaint asserted two design patents — USD0991706S and USD0990930S — covering seat cushion ornamental designs. The case was voluntarily dismissed without prejudice on September 22, 2025, after 64 days, before the defendant filed any answer or substantive motion.
A dismissal without prejudice means the case was ended without any ruling on the merits. Both design patents remain fully valid and enforceable. Anhui Zuoyou retains the legal right to refile the same infringement claims against Purple Innovation or any other party in a future action. No finding was made regarding infringement, patent validity, or claim scope.
The public record does not disclose the reason for the early dismissal. The 64-day timeline and the absence of any defendant counsel on record are consistent with either a private settlement or a plaintiff decision to withdraw before incurring further litigation costs. Neither explanation can be confirmed from the docket alone, and no settlement terms have been publicly disclosed.
The complaint identified seat cushion products sold under four brand names: Angushy, LINW, Super Seat, and Yinstore. These appear to be consumer-facing retail or e-commerce product lines. The specific product configurations alleged to infringe USD0991706S and USD0990930S were not adjudicated, as the case was dismissed before any substantive ruling.
No. A voluntary dismissal without prejudice under Rule 41(a)(1)(A)(i) provides no merits-based clearance. Neither patent was construed, challenged, or found invalid. Companies selling or developing seat cushion products with similar ornamental designs should conduct an independent FTO analysis against both patents rather than relying on the absence of a merits ruling in this case.
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