Bestergo Inc. v. CKnapp Sales: Patent Suit Dismissed Without Prejudice in 47 Days
Bestergo Inc. asserted US Patent 12318003B1 against CKnapp Sales, Inc., targeting Amazon-listed products sold under two specific ASINs. Filed in the Northern District of Illinois, the case closed just 47 days later via a voluntary dismissal without prejudice — leaving the door open for future action.
A swift exit: Bestergo’s 47-day Amazon patent suit against CKnapp
On June 26, 2025, Bestergo Inc. filed an infringement action against CKnapp Sales, Inc. in the U.S. District Court for the Northern District of Illinois before Judge Sharon Johnson Coleman. The suit asserted US Patent 12318003B1 and targeted products CKnapp was selling on Amazon.com, specifically identified by ASINs B0D9LZC7MB and B0D9LZV2N7. Representation for Bestergo was provided by Rimon PC, with attorneys Eric Charles Cohen, Jason Liang Xu, and John Edward Handy on record. No defendant counsel of record appeared in the docket.
The case concluded on August 12, 2025 — just 47 days after filing — when Bestergo voluntarily dismissed CKnapp without prejudice pursuant to Fed. R. Civ. P. 41(a)(1)(A)(i). This procedural mechanism allows a plaintiff to unilaterally dismiss before the defendant has served an answer or a motion for summary judgment. Because the dismissal is without prejudice, Bestergo retains the right to refile the same patent infringement claims against CKnapp in the future, subject to applicable statutes of limitations.
The 47-day duration suggests the case resolved — or was strategically paused — before substantive litigation commenced. The absence of any defendant counsel of record may indicate that the parties reached an informal resolution, that CKnapp did not yet engage legal representation, or that Bestergo elected to withdraw tactically. The public record does not disclose whether a license, settlement, or cease-and-desist agreement was reached. The without-prejudice nature of the dismissal means this dispute cannot be considered fully resolved from a patent enforcement perspective.
Filing to Dismissed without Prejudice in 47 days
47 days — resolved before most district court cases reach initial scheduling
Dismissed without prejudice: what this outcome 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 a court order before the defendant has served an answer or a motion for summary judgment. This is the earliest and most unilateral exit available — no judicial approval required. The dismissal takes effect automatically upon filing, which is consistent with the rapid 47-day close seen here and the absence of any defendant counsel of record.
Procedural voluntary exitWithout prejudice: the case can be refiled
A without-prejudice dismissal does not adjudicate the merits of the patent infringement claims. Bestergo retains the right to refile against CKnapp on the same patent — US12318003B1 — in the same or another federal district. This contrasts sharply with a with-prejudice dismissal, which would bar refiling. The public record does not disclose whether any settlement or licence agreement accompanied this dismissal, so the practical finality of this outcome remains uncertain.
Refiling remains possibleCKnapp faces ongoing exposure on the same patent
Because the dismissal is without prejudice, CKnapp Sales cannot treat this as a final resolution. If no licence or settlement was reached privately, Bestergo may reassert US12318003B1 at any time within the applicable limitations period. CKnapp’s lack of recorded legal representation during the case suggests it may not have mounted a formal defence, which could leave it less prepared if litigation is reinitiated.
Exposure not extinguishedAmazon ASIN-targeted suits signal a broader enforcement pattern
Asserting patent rights against specific Amazon ASINs is a tactic increasingly used by IP holders to target marketplace sellers directly and precisely. The rapid dismissal without prejudice — before any substantive proceedings — is consistent with a demand-and-resolve strategy, where litigation is initiated to prompt a licensing discussion. Other Amazon sellers in the same product category should assess their own exposure to US12318003B1.
Amazon seller IP riskFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Bestergo Inc. | Company | IP enforcement entity — holder of US Patent 12318003B1 targeting Amazon marketplace sellersSearch in Eureka ↗ |
| Defendant | CKnapp Sales, Inc. | Company | Amazon marketplace seller of consumer products under ASINs B0D9LZC7MB and B0D9LZV2N7Search in Eureka ↗ |
| Plaintiff counsel | Eric Charles Cohen | Attorney | Counsel for Bestergo Inc.Search in Eureka ↗ |
| Plaintiff counsel | Jason Liang Xu | Attorney | Counsel for Bestergo Inc.Search in Eureka ↗ |
| Plaintiff counsel | John Edward Handy | Attorney | Counsel for Bestergo Inc.Search in Eureka ↗ |
| Plaintiff law firm | Rimon PC | Law Firm | Representing Bestergo Inc.Search in Eureka ↗ |
| Presiding judge | Judge Sharon Johnson Coleman | Judge | Illinois Northern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The dismissal notice invokes Rule 41(a)(1)(A)(i) explicitly, confirming it is a unilateral plaintiff action requiring no court order or defendant consent. The without-prejudice designation is the operative term: it preserves all of Bestergo’s patent infringement claims against CKnapp and forecloses any res judicata defence. The absence of any merits ruling, claim construction, or fee award means neither party obtained a substantive legal advantage from this proceeding.
US12318003B1 — Consumer product patent asserted against Amazon sellers
US Patent 12318003B1, filed under application number US18/930950, is a recently issued U.S. utility patent asserted by Bestergo Inc. in this infringement action. The patent was applied to products commercially identified by two specific Amazon ASINs — B0D9LZC7MB and B0D9LZV2N7 — suggesting the invention covers a discrete consumer product category sold through online marketplaces. As a B1 grant, the patent issued without prior publication, which limits early visibility into its prosecution history and claim scope.
The strategic significance of US12318003B1 lies in its apparent application to Amazon marketplace products, a channel that represents one of the world’s largest consumer distribution surfaces. Patent holders targeting specific ASINs can enforce precisely and at scale, making this patent potentially relevant to any seller operating in the same product class on Amazon. The rapid filing-to-dismissal cycle suggests the patent has active enforcement value and may be part of a broader licensing or enforcement programme. Competitors and adjacent sellers should treat this patent as a live commercial risk until a with-prejudice resolution or post-grant review outcome is recorded.
Should you run an FTO analysis against US12318003B1?
Any company selling products on Amazon — particularly those in the same or adjacent category as ASINs B0D9LZC7MB and B0D9LZV2N7 — should assess their exposure to US12318003B1. Given that the patent was recently issued and has already been asserted in federal court, its enforcement posture is active. A freedom-to-operate analysis is especially urgent for sellers who have received demand letters, who sell similar consumer products, or who are planning new Amazon product launches in related categories.
PatSnap Eureka’s FTO Search Agent allows R&D and product teams to map US12318003B1’s claim scope against their existing and planned product lines, identify prior art that could support an IPR petition, and benchmark against similar enforcement actions in the Amazon seller IP space. Eureka can surface the full prosecution history, claim-by-claim analysis, and competitor patent landscapes — giving your legal and product teams the intelligence needed to respond before a second complaint is filed.
Run a freedom-to-operate analysis on US12318003B1 to assess your product’s exposure
Run FTO in Eureka →Similar Amazon marketplace patent enforcement cases — Northern District of Illinois
Explore related patent infringement cases involving Amazon marketplace sellers and consumer product patents filed in the Northern District of Illinois.
What this case signals for Amazon marketplace and e-commerce IP enforcement
A 47-day lifecycle and ASIN-specific targeting point to a targeted enforcement model that product sellers and IP teams should monitor closely.
ASIN-targeted patent filings are a precision enforcement tool
By identifying specific Amazon ASINs in the complaint, Bestergo created a narrow, concrete infringement target. This tactic reduces invalidity surface area and focuses the dispute on a defined commercial product. Marketplace sellers should audit their listings against recently issued patents — particularly those with Amazon-native product scopes — before receiving a demand letter or complaint.
A without-prejudice exit signals unresolved leverage, not closure
Cases dismissed this quickly under Rule 41(a)(1)(A)(i) frequently indicate out-of-court dialogue rather than a decision to abandon the claim. Without a with-prejudice dismissal or public licence, the dispute is in suspension. Defendants in similar positions should treat the absence of a formal resolution as continued IP risk and consider seeking a freedom-to-operate opinion or licence proactively.
Bestergo v CKnapp — key questions answered
A without-prejudice dismissal under Rule 41(a)(1)(A)(i) means Bestergo retains the right to refile its infringement claims against CKnapp on US12318003B1. No merits were decided, no res judicata bar applies, and no licence or settlement is publicly recorded. CKnapp remains exposed to renewed litigation until a with-prejudice resolution or licence is formalised.
The asserted patent is US12318003B1, filed under application number US18/930950. It was applied to products sold on Amazon.com under ASINs B0D9LZC7MB and B0D9LZV2N7. The patent is a recently issued B1 grant, indicating it issued without prior publication, limiting publicly available prosecution history at the time of filing.
The 47-day duration is consistent with a demand-and-resolve enforcement model, where a complaint is filed to initiate licensing dialogue rather than proceed to full merits litigation. The absence of defendant counsel of record and the use of Rule 41(a)(1)(A)(i) — the earliest possible unilateral exit — suggests proceedings did not advance beyond initial notice. Whether a private agreement was reached is not disclosed in the public record.
Naming specific Amazon ASINs in a complaint identifies the exact commercial products alleged to infringe, creating a precise and commercially concrete infringement target. This tactic allows patent holders to focus disputes on defined revenue-generating products, potentially simplifying damages calculations and reducing the scope of invalidity arguments. It also signals to the marketplace that specific listings are under active IP scrutiny.
Yes. The dismissal without prejudice resolves only the dispute with CKnapp and does not limit Bestergo’s ability to assert US12318003B1 against other sellers. Any Amazon seller operating in the same consumer product category as ASINs B0D9LZC7MB and B0D9LZV2N7 should assess their product lines for potential infringement exposure and consider a freedom-to-operate review or monitoring of Bestergo’s future filings.
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