Linfo IP v. UNTUCKit: Infringement Suit Dismissed With Prejudice in 88 Days
Linfo IP, LLC asserted US9092428B1 — a patent covering text-content discovery and presentation systems — against apparel retailer UNTUCKit, LLC in the Western District of Texas. The plaintiff voluntarily dismissed all claims with prejudice just 88 days after filing, before UNTUCKit filed any responsive pleading.
Pre-answer voluntary dismissal ends Linfo IP’s text-discovery patent campaign
On July 22, 2024, Linfo IP, LLC filed suit against apparel retailer UNTUCKit, LLC in the U.S. District Court for the Western District of Texas (Case No. 6:24-cv-00393), before Judge Xavier Rodriguez. The action alleged infringement of US9092428B1, which claims a system, methods, and user interface for discovering and presenting information embedded in text content — technology consistent with retail product-discovery or recommendation interfaces.
On October 18, 2024 — just 88 days after filing — Linfo IP filed a notice of voluntary dismissal under Fed. R. Civ. P. 41(a)(1)(A)(i), dismissing all claims against UNTUCKit with prejudice. The filing confirms that UNTUCKit had not yet filed an answer or motion for summary judgment at the time of dismissal. Crucially, the ‘with prejudice’ designation means Linfo IP cannot reassert these same claims against UNTUCKit in any future action.
The 88-day resolution is notably short and suggests the parties likely reached a private arrangement — or that Linfo IP assessed early that the infringement position was untenable — though the public record is silent on any settlement consideration. The cost-neutrality provision (each party bearing its own fees) is standard in negotiated pre-answer exits and does not necessarily indicate litigation on the merits. What drove the with-prejudice election, rather than a without-prejudice withdrawal, remains undisclosed.
Filing to Voluntary dismissal in 88 days
88 days — resolved well before the typical W.D. Tex. first-instance trial schedule
Dismissed with prejudice: what the voluntary exit means for both parties
Rule 41(a)(1)(A)(i) dismissal — no court order required
Under Fed. R. Civ. P. 41(a)(1)(A)(i), a plaintiff may dismiss without a court order at any time before the opposing party files an answer or motion for summary judgment. Linfo IP exercised this right before UNTUCKit responded. The ‘with prejudice’ election is voluntary — plaintiffs typically retain without-prejudice rights at this stage — making the choice to bar future claims a deliberate strategic decision.
Pre-answer voluntary exitWith prejudice forecloses all future claims on this patent against UNTUCKit
A dismissal with prejudice carries the force of a final adjudication on the merits, permanently barring Linfo IP from asserting US9092428B1 against UNTUCKit in any future proceeding. A without-prejudice dismissal would have preserved the option to re-file. The public record does not disclose why Linfo IP agreed to the more restrictive with-prejudice term — this distinction is significant for evaluating whether a private resolution was reached.
Permanent bar on re-filingLinfo IP exits without any recorded recovery — and surrenders re-filing rights
Linfo IP receives no publicly recorded damages, royalty, or injunctive relief. By accepting a with-prejudice dismissal, it permanently relinquishes the right to sue UNTUCKit again on US9092428B1. This outcome may reflect a negotiated release, an unfavourable early claim-construction assessment, or a cost-benefit calculation — none of which are confirmed by the public record.
No public recovery recordedUNTUCKit exits cleanly — no liability, no costs, permanent protection from this patent
UNTUCKit faces no recorded liability and bears none of Linfo IP’s legal costs. More valuably, it holds a permanent shield against any future assertion of US9092428B1 by Linfo IP under the with-prejudice bar. Retailers operating text-based discovery or recommendation interfaces in similar competitive positions should note the outcome, though its commercial terms — if any — remain confidential.
Full defence win on recordFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Linfo IP, LLC | Company | Patent assertion entity — holder of US9092428B1 covering text-content discovery systemsSearch in Eureka ↗ |
| Defendant | Untuckit, LLC | Company | UNTUCKit, LLC — direct-to-consumer apparel retailer operating digital commerce platformsSearch in Eureka ↗ |
| Plaintiff counsel | William P. Ramey , III | Attorney | Counsel for Linfo IP, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Ramey LLP | Law Firm | Representing Linfo IP, LLCSearch in Eureka ↗ |
| Presiding judge | Judge Xavier Rodriguez | Judge | Texas Western District CourtSearch in Eureka ↗ |
Official order — verbatim text
The dismissal notice invokes Rule 41(a)(1)(A)(i), available only before an answer or summary judgment motion is filed — confirming this was a unilateral plaintiff election requiring no judicial approval. The explicit ‘with prejudice’ designation is the operative term: it converts an otherwise non-final voluntary exit into a permanent bar on re-litigation of these claims against UNTUCKit. The mutual cost-bearing provision neither awards attorneys’ fees nor signals misconduct, but it does preclude UNTUCKit from recovering its defence costs — a common concession in pre-answer exits.
US9092428B1 — System and methods for text-content discovery and presentation
US9092428B1 (application no. US13/709827) claims a system, methods, and user interface for discovering and presenting information embedded or referenced within text content. This class of invention sits at the intersection of information retrieval, natural language processing, and UI design — technologies foundational to modern e-commerce search, product tagging, and contextual recommendation engines. The patent’s granted status and B1 designation indicate it issued without a reissue or reexamination proceeding as of the filing date.
For retail and e-commerce businesses, the commercial significance of a patent in this space lies in its potential breadth: any platform that parses user-facing text to surface related products, definitions, or links could fall within the claimed scope depending on claim construction. The assertion against UNTUCKit — a retailer whose digital presence relies on product-discovery interfaces — is consistent with a strategy of targeting companies with text-indexed browsing or recommendation features. Competitors in fashion retail, marketplace platforms, and SaaS commerce tools should treat this patent as a live monitoring priority.
Should your product team run an FTO against US9092428B1?
Any company building or maintaining a text-based product discovery interface, content recommendation engine, or in-app search feature with contextual presentation logic should assess exposure to US9092428B1. The patent’s claims appear broad enough to encompass common e-commerce UI patterns. While Linfo IP has permanently released its claims against UNTUCKit, the patent may remain enforceable against other defendants — or be assigned to a new holder — making an independent FTO review prudent for product and IP teams in retail technology.
PatSnap Eureka’s FTO Search Agent can map the independent and dependent claims of US9092428B1 against your product’s text-processing and UI architecture in minutes. It identifies prior art, flags claim limitations that may not read on your implementation, and surfaces any inter partes review history or reexamination activity that could affect enforceability — giving your legal and R&D teams a defensible position before any demand letter arrives.
Run a freedom-to-operate analysis on US9092428B1 to assess your product’s exposure
Run FTO in Eureka →Similar patent infringement cases: text-content discovery UI patents in W.D. Tex.
Cases involving UI and information-discovery patents asserted against e-commerce defendants in the Western District of Texas follow recognisable PAE filing patterns worth tracking.
What this case signals for the retail-tech patent assertion landscape
Pre-answer exits with prejudice in W.D. Tex. frequently indicate off-record resolution — or early recognition of claim weakness.
PAE campaigns against e-commerce UI patents often resolve before answer
Patent assertion entities targeting retail and e-commerce platforms frequently file in W.D. Tex. and exit early when defendants hold sufficient leverage or the claim-construction risk is high. An 88-day with-prejudice exit — before any responsive pleading — is consistent with a negotiated resolution or a strategic retreat after initial diligence on validity or infringement.
With-prejudice voluntary dismissals provide durable defendant protection
For UNTUCKit and similarly situated retailers, the with-prejudice designation eliminates ongoing exposure to this specific patent from this plaintiff. However, US9092428B1 may still be asserted by any future assignee against other defendants — companies operating text-discovery interfaces should monitor ownership transfers and forward citation activity on this patent.
Linfo v Untuckit — key questions answered
A dismissal with prejudice acts as a final adjudication on the merits, permanently barring Linfo IP from asserting US9092428B1 against UNTUCKit in any future action. UNTUCKit cannot be sued again on this patent by Linfo IP. However, the patent remains potentially enforceable against other defendants or by any future assignee.
The public record does not disclose the reason. Common drivers of a pre-answer with-prejudice exit include a negotiated licensing settlement with confidential terms, an early assessment that claim construction would be unfavourable, or cost-benefit considerations. The mutual cost-bearing provision suggests neither party extracted a fee concession, but does not rule out a private payment.
US9092428B1 (application no. US13/709827) is a granted US patent claiming a system, methods, and user interface for discovering and presenting information in text content. The technology is relevant to e-commerce search, product tagging, contextual recommendations, and any UI that parses text to surface related information — making it potentially applicable to a wide range of retail and SaaS platforms.
Fed. R. Civ. P. 41(a)(1)(A)(i) allows a plaintiff to dismiss its own case without a court order, provided the defendant has not yet filed an answer or motion for summary judgment. It is a unilateral right. In this case, UNTUCKit had filed neither, so Linfo IP could exit without judicial approval. The voluntary nature means the dismissal reflects the plaintiff’s own strategic decision, not a court-ordered outcome.
The dismissal stipulates each party bears its own costs and fees, meaning no fee-shifting award was made. Under Octane Fitness, an ‘exceptional case’ finding could have exposed Linfo IP to UNTUCKit’s fees — but since the case ended before any merits adjudication, that avenue was never pursued. The cost neutrality clause is a common feature of pre-answer negotiated exits and does not independently signal settlement consideration.
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