Linfo IP v. Rhone Apparel — Infringement Action Dismissed With Prejudice in 84 Days
Linfo IP, LLC asserted US9092428B1, a patent covering discovery and extraction of information from text content, against apparel company Rhone Apparel, Inc in the Southern District of Texas. The plaintiff voluntarily dismissed all claims with prejudice before the defendant had answered, closing the case in just 84 days with each party bearing its own costs.
Pre-Answer Voluntary Dismissal With Prejudice: A Rare and Final Exit
On October 25, 2024, Linfo IP, LLC filed suit against Rhone Apparel, Inc in the U.S. District Court for the Southern District of Texas (Case No. 4:24-cv-04126), asserting infringement of US9092428B1. The patent relates to technology for discovering information embedded in text content and extracting and presenting that information — a capability with broad application across digital retail, content management, and e-commerce platforms. Rhone Apparel is an apparel company, suggesting the dispute likely centred on how product or content data was handled on its digital properties.
On January 17, 2025 — just 84 days after filing — Linfo IP filed a notice of voluntary dismissal under Federal Rule of Civil Procedure 41(a)(1)(A)(i), which permits a plaintiff to dismiss without a court order before the defendant has served an answer or a motion for summary judgment. Critically, the notice expressly stipulated that dismissal would be WITH PREJUDICE as to the asserted patent. This is an unusual and self-limiting step: a standard Rule 41(a)(1)(A)(i) dismissal defaults to without prejudice, so Linfo IP affirmatively chose finality. Each party was designated to bear its own costs, expenses, and attorneys’ fees.
An 84-day resolution without any court ruling on the merits suggests the parties likely reached a private understanding — or that Linfo IP reassessed the merits or commercial value of proceeding — though the public record is silent on any settlement terms. The with-prejudice designation forecloses any future re-filing of the same patent claims against Rhone Apparel, which is notable in the context of serial patent assertion campaigns. What drove this early and permanent exit remains undisclosed, but the outcome structurally benefits the defendant.
Filing to Voluntary dismissal in 84 days
84 days — resolved well before the typical 18–24 month district court patent lifecycle
Dismissed with prejudice: what this voluntary exit means for both parties
Rule 41(a)(1)(A)(i): plaintiff’s unilateral pre-answer exit
Federal Rule 41(a)(1)(A)(i) allows a plaintiff to dismiss without a court order if the defendant has not yet answered or moved for summary judgment. The default effect is dismissal without prejudice — but here, Linfo IP expressly elected dismissal WITH prejudice. That voluntary upgrade to a permanent bar is a significant legal choice, not a procedural formality, and it carries the same res judicata weight as a final judgment on the merits.
Rule 41(a)(1)(A)(i) — pre-answerLinfo IP permanently forfeits its claims against Rhone Apparel
By stipulating to dismissal with prejudice, Linfo IP extinguished its right to reassert US9092428B1 against Rhone Apparel in any future proceeding. This is a binding, self-imposed final judgment. Whether this reflects a confidential resolution, a commercial calculation, or a merits reassessment is unknown from the public record — but the outcome is unambiguous: Linfo IP cannot relitigate these claims against this defendant.
Claims permanently extinguishedRhone Apparel exits without paying costs or conceding anything
Rhone Apparel never filed an answer, meaning it made no substantive admissions and obtained no court ruling validating or invalidating the patent. Yet the with-prejudice dismissal gives the defendant permanent protection from re-suit on US9092428B1 by this plaintiff. Combined with the each-party-bears-own-costs clause, Rhone Apparel achieved a clean exit — a favourable structural outcome even absent any merits adjudication.
Clean exit, no costs awardedWith-prejudice exit signals limits on serial patent assertion strategy
Patent assertion entities frequently rely on the credible threat of re-filing to maintain leverage. A with-prejudice dismissal removes that lever against this specific defendant. For other companies that may have received demand letters referencing US9092428B1, this outcome — while not a merits invalidation — suggests the asserted patent may face commercial or legal headwinds that made continued assertion against Rhone Apparel unviable. Monitoring Linfo IP’s broader litigation portfolio is advisable.
Serial assertion risk reducedFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Linfo IP, LLC | Company | Patent assertion entity — holder of US9092428B1, text information extraction technologySearch in Eureka ↗ |
| Defendant | Rhone Apparel, Inc | Company | Rhone Apparel, Inc — apparel company targeted over text content extraction patentSearch 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 Keith P Ellison | Judge | Texas Southern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The dismissal notice is self-executing under Rule 41(a)(1)(A)(i) and required no judicial approval, meaning Judge Ellison issued no opinion on the merits. The operative language — ‘WITH PREJUDICE as to the asserted patent’ — is unambiguous: it bars Linfo IP from re-filing the same claims against Rhone Apparel, functioning as a final judgment on the merits for res judicata purposes. The each-party-bears-own-costs clause forecloses any future fee motion under 35 U.S.C. § 285 between these parties.
US9092428B1 — Text Content Information Discovery and Extraction
US9092428B1 (application number US13/709827) covers methods and systems for discovering information embedded in text content and extracting and presenting that information to users. This type of technology sits at the intersection of natural language processing, information retrieval, and content presentation — capabilities increasingly embedded in e-commerce product pages, customer-facing search interfaces, and content management systems. The patent’s broad claim framing around ‘text content’ gives it potential reach across a wide range of digital platforms.
For apparel and retail companies with content-rich digital properties — product descriptions, blog content, customer review systems — the patent’s scope is commercially relevant. The assertion against Rhone Apparel, a digitally active apparel brand, is consistent with this targeting logic. Companies operating e-commerce platforms that parse, tag, or surface information from unstructured text should assess whether their implementations fall within the claim scope of US9092428B1, particularly given that the patent’s validity was not challenged or adjudicated in this case.
Should your product team run an FTO against US9092428B1?
Any company operating a digital platform that discovers, extracts, or presents structured information from text content — including e-commerce sites, content management systems, retail product pages, or search and recommendation engines — should consider a freedom-to-operate review against US9092428B1. The patent has been actively asserted, and its dismissal here was with prejudice only as to Rhone Apparel. Other companies remain fully exposed to assertion by Linfo IP.
PatSnap Eureka’s FTO Search Agent enables R&D and legal teams to map claim language from US9092428B1 against your product architecture in minutes. Upload your technical specification, and Eureka will identify claim elements, locate relevant prior art, and flag design-around opportunities — giving your team the intelligence needed to assess litigation exposure before a demand letter arrives.
Run a freedom-to-operate analysis on US9092428B1 to assess your product’s exposure
Run FTO in Eureka →Similar text extraction and information retrieval patent cases in S.D. Texas
Cases involving text content extraction and information retrieval patents in the Southern District of Texas, including other Linfo IP assertions and related NLP patent disputes.
What this case signals for the text extraction and digital content IP landscape
A with-prejudice pre-answer dismissal in a patent assertion case is rare and analytically meaningful for IP counsel monitoring this space.
With-prejudice election signals more than a simple walk-away
Most Rule 41(a)(1)(A)(i) dismissals are without prejudice, preserving optionality. Linfo IP’s explicit with-prejudice designation suggests either a negotiated resolution with a confidential term requiring finality, or a deliberate strategic retreat. Either way, it is not a standard non-event — IP counsel tracking this plaintiff should log it as a data point about assertion viability.
Defendant’s zero-cost exit is a template for early resistance
Rhone Apparel’s outcome — no answer filed, no costs awarded, permanent protection from re-suit — illustrates how early, credible resistance or negotiation can resolve a patent assertion with minimal exposure. The absence of any defendant law firm on record is also notable and may reflect in-house handling or early settlement facilitation.
Linfo v Rhone — key questions answered
Dismissal with prejudice means Linfo IP permanently forfeited its right to reassert US9092428B1 against Rhone Apparel. It carries the same legal effect as a final judgment on the merits, barring re-filing of the same claims under res judicata principles. Rhone Apparel is permanently shielded from future suit by this plaintiff on this patent.
The public record does not disclose the reason. Under Rule 41(a)(1)(A)(i), the default is dismissal without prejudice, so the with-prejudice election was a deliberate and unusual choice. It may reflect a confidential settlement requiring permanent finality, a commercial decision to abandon the claim, or a reassessment of patent strength. The motivation remains unknown from publicly available documents.
US9092428B1 (application US13/709827) covers technology for discovering information within text content and extracting and presenting that information. It sits within the natural language processing and information retrieval domain, with potential application to e-commerce platforms, content management systems, and digital retail interfaces that surface structured data from unstructured text.
No. The case was dismissed before Rhone Apparel filed an answer, meaning no court ruled on the patent’s validity, infringement, or enforceability. The patent’s legal status was not adjudicated. It remains granted and enforceable against third parties, and its validity has not been tested in inter partes review or in any recorded court decision.
The dismissal notice expressly provided that each party shall bear its own costs, expenses, and attorneys’ fees. This forecloses any future motion for attorney fees under 35 U.S.C. § 285 between these parties. Neither side is entitled to seek cost recovery from the other as a result of this litigation.
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