Hefei Guansi v. Tassel Toppers: Graduation Cap Patent Suit Dropped in 26 Days
Three Chinese consumer goods companies trading as GoneSee, Tantenbeller, and Yanrockill sued Tassel Toppers, LLC in New Jersey over graduation cap topper products listed across 27 Amazon ASINs, asserting US9241526B2. The plaintiffs voluntarily dismissed the action without prejudice just 26 days after filing — leaving the door open for re-filing.
A rapid pre-answer dismissal in a graduation cap IP dispute
On 9 May 2025, three Chinese consumer technology companies — Hefei Guansi Intelligent Technology Co., Ltd. (dba GoneSee), Hefei Tingpei Trading Co., Ltd. (dba Tantenbeller), and Shenzhen Yanluo Network Technology Co., Ltd. (dba Yanrockill) — filed an infringement action against Tassel Toppers, LLC in the United States District Court for the District of New Jersey. The suit centred on US9241526B2, a patent covering graduation cap topper designs, and targeted 27 specific Amazon product listings identified by ASIN numbers.
On 4 June 2025, just 26 days after filing, the plaintiffs filed a unilateral notice of dismissal without prejudice pursuant to Federal Rule of Civil Procedure 41(a)(1)(A)(i). This procedural mechanism is available as of right before the defendant serves an answer or a motion for summary judgment — meaning the case ended before Tassel Toppers was required to formally respond on the merits. No costs order, consent decree, or settlement terms appear in the public record.
The 26-day duration is notably short even for cases that resolve early. The absence of any defendant filing suggests this dismissal preceded formal service or response, which is consistent with a pre-litigation resolution, a strategic pause, or a reassessment of venue and defendant. The public record does not reveal whether the parties reached an informal arrangement; the ‘without prejudice’ designation means the plaintiffs retain the legal right to re-file substantially identical claims at a later date.
Filing to Voluntary dismissal in 26 days
26 days — well below the median district court patent case lifespan of 2+ years
Voluntarily dismissed: what the Rule 41 exit means for both parties
Rule 41(a)(1)(A)(i): dismissal as of right, no court order needed
Fed. R. Civ. P. 41(a)(1)(A)(i) permits a plaintiff to dismiss an action without a court order by filing a notice before the defendant serves an answer or motion for summary judgment. Because no such filing by Tassel Toppers appears on the docket, the plaintiffs exercised this right unilaterally. The dismissal is self-executing — it requires no judicial approval and carries no findings on the merits.
No merits adjudicationThe public record confirms ‘without prejudice’ — re-filing remains possible
The dismissal notice expressly states ‘without prejudice,’ meaning the plaintiffs’ patent claims against Tassel Toppers are not extinguished. The plaintiffs may re-file the same infringement claims in the same or a different court, subject to any applicable statute of limitations. This is a meaningful distinction from a ‘with prejudice’ dismissal, which would bar re-filing entirely. The public record is silent on whether any settlement or licensing arrangement underpins the dismissal.
Claims preserved for re-filingTassel Toppers escapes immediate liability — but exposure persists
Tassel Toppers obtained a clean exit from this particular proceeding without incurring the cost of a formal defence. However, a without-prejudice dismissal provides no legal immunity. The 27 Amazon ASINs identified in the complaint remain on record as allegedly infringing products. If those listings remain active, plaintiffs — or any successor rights holder — could reassert US9241526B2 in a future action. Tassel Toppers would be prudent to assess its FTO position.
Continued IP exposureAmazon ASIN-level targeting signals a growing enforcement pattern
The complaint’s identification of 27 specific Amazon ASINs reflects an increasingly granular enforcement tactic used by Chinese patent holders against US marketplace sellers. By cataloguing specific product listings, plaintiffs create a clear record linking accused products to patent claims — useful in future proceedings or Amazon IP complaint mechanisms. Other graduation cap topper sellers on Amazon should treat this case as a signal that US9241526B2 is being actively monitored and enforced.
Amazon marketplace IP riskFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | HEFEI GUANSI INTELLIGENT TECHNOLOGY CO., LTD. | Company | Chinese consumer goods IP licensor — holder of US9241526B2 for graduation cap toppersSearch in Eureka ↗ |
| Defendant | TASSEL TOPPERS, LLC | Company | Tassel Toppers, LLC — US seller of graduation cap topper products across Amazon marketplaceSearch in Eureka ↗ |
| Plaintiff counsel | John Hoon Choi | Attorney | Counsel for HEFEI GUANSI INTELLIGENT TECHNOLOGY CO., LTD.Search in Eureka ↗ |
| Plaintiff law firm | John H. Choi & Associates, LLC | Law Firm | Representing HEFEI GUANSI INTELLIGENT TECHNOLOGY CO., LTD.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | New Jersey District CourtSearch in Eureka ↗ |
Official order — verbatim text
The dismissal notice invokes Rule 41(a)(1)(A)(i) and is filed by named counsel on behalf of all three plaintiff entities. The express ‘without prejudice’ designation is legally significant: it preserves the plaintiffs’ right to reassert US9241526B2 against Tassel Toppers or any similarly situated defendant. No admission of invalidity, non-infringement, or unenforceability is implied. The absence of any defendant filing confirms this was a unilateral plaintiff action, exercised before Tassel Toppers incurred formal defence obligations.
US9241526B2 — Graduation cap topper design and attachment technology
US9241526B2, filed under application number US13/193880, covers technology relating to graduation cap toppers — decorative accessories designed to be affixed to or placed atop traditional academic mortarboard caps. The patent’s grant number and application lineage suggest it issued from a standard utility examination pathway. Graduation cap toppers occupy a niche but commercially active product category, particularly around peak graduation season (April–June), when Amazon marketplace competition is at its highest.
The strategic value of US9241526B2 lies in its application to a high-velocity seasonal consumer goods category dominated by Amazon third-party sellers. Chinese manufacturers who hold US patents on such accessories can leverage them against US-based resellers operating in the same marketplace. The three plaintiff entities, operating under distinct consumer brands, appear to be among the patent’s commercial beneficiaries — suggesting the IP is being used both offensively against competitors and defensively to protect Amazon market share in the graduation accessories segment.
Should your product team run an FTO check against US9241526B2?
Any company — US or international — manufacturing, importing, or selling graduation cap toppers on Amazon or other US retail platforms should treat US9241526B2 as an active enforcement risk. The patent was asserted against 27 specific ASINs in a formal federal complaint, confirming the rights holder is monitoring the market. A freedom-to-operate analysis is particularly urgent for sellers whose products share design or functional similarities with the accused product categories listed in this case.
PatSnap Eureka’s FTO Search Agent can map the claim scope of US9241526B2 against your product specifications, identify design-around opportunities, and surface any continuation or related patents that may extend the rights holder’s enforcement reach. Given the seasonal nature of this product category and the speed at which new graduation topper designs enter the Amazon marketplace, an automated patent monitoring alert for this patent family is a cost-effective risk management step for any seller in this space.
Run a freedom-to-operate analysis on US9241526B2 to assess your product’s exposure
Run FTO in Eureka →Similar patent infringement cases: graduation accessories and Amazon marketplace IP
Cases involving Amazon ASIN-level patent enforcement in the decorative accessories and graduation products space, filed in US District Courts.
What this case signals for the graduation cap and novelty accessory IP landscape
A 26-day lifecycle and ASIN-level targeting suggest a deliberate, repeatable enforcement strategy by Chinese IP holders in consumer goods.
Pre-answer dismissals often mask licensing negotiations, not surrender
When a plaintiff dismisses without prejudice before the defendant even answers, it frequently suggests an off-docket resolution — a licensing fee paid, a product modification agreed, or a settlement that the parties prefer to keep private. In the absence of a public agreement, competitors and market watchers should not interpret this dismissal as a sign that US9241526B2 is weak or unenforceable.
27 ASINs on record: Amazon sellers in this category face documented exposure
The complaint’s enumeration of 27 specific Amazon product identifiers creates a permanent public record linking those listings to an asserted patent. Even with the case dismissed, that record can be cited in future Amazon IP complaint submissions or litigation. Sellers of graduation cap toppers — particularly those sourcing from competing Chinese suppliers — should audit their listings against US9241526B2 claims.
HEFEI v TASSEL — key questions answered
Hefei Guansi Intelligent Technology Co., Ltd. and two co-plaintiffs filed a patent infringement suit against Tassel Toppers, LLC in the District of New Jersey on 9 May 2025, asserting US9241526B2 over graduation cap topper products. The plaintiffs voluntarily dismissed the action without prejudice on 4 June 2025, 26 days after filing, before any response was filed by the defendant.
A dismissal without prejudice under Rule 41(a)(1)(A)(i) means the plaintiffs’ claims are not permanently extinguished. Tassel Toppers is not bound by any judgment, injunction, or consent order. However, the plaintiffs retain the right to re-file substantially the same claims in the same or a different court. The 27 Amazon ASINs identified in the original complaint remain on the public record as accused products.
The patent asserted is US9241526B2, filed under application number US13/193880. It relates to graduation cap topper technology — decorative accessories affixed to academic mortarboard caps. The complaint targeted 27 specific Amazon product listings (identified by ASIN numbers) sold by Tassel Toppers as allegedly infringing products.
Early voluntary dismissals without prejudice in patent cases typically suggest one of several scenarios: an off-docket licensing or settlement agreement was reached; the plaintiff reassessed its litigation strategy, venue, or evidentiary position; or the defendant agreed to cease the accused activity informally. The public record in this case is silent on the specific reason. The speed of dismissal — before any defendant filing — is consistent with a pre-answer resolution.
Yes. A without-prejudice dismissal does not immunise the accused products from future enforcement. The 27 ASINs named in the complaint remain publicly linked to US9241526B2 in the court record. The patent rights holder could re-file infringement claims against the same products, submit an Amazon IP complaint referencing the patent, or pursue other sellers of similar graduation cap toppers. Sellers in this category should consider an FTO assessment against US9241526B2.
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