Linfo IP v. Carparts.com: Infringement Case Dismissed Without Prejudice
Linfo IP LLC asserted US9092428B1 — a patent covering systems and methods for discovering and presenting information in text content — against e-commerce auto parts retailer Carparts.com Inc in the Northern District of Texas. The case closed in just 111 days with a dismissal without prejudice, leaving each party to bear its own costs.
A rapid, merits-free exit in a Texas text-discovery patent dispute
On January 26, 2024, Linfo IP LLC filed suit against Carparts.com Inc in the Northern District of Texas (Case No. 3:24-cv-00199), asserting infringement of US9092428B1. That patent claims a system, methods, and user interface for discovering and presenting information embedded in text content — technology relevant to product search, content recommendation, and e-commerce discovery experiences of the kind Carparts.com operates.
The case closed on May 16, 2024 — just 111 days after filing — when Judge Brantley Starr dismissed all claims by all parties without prejudice, pursuant to a prior court order at Doc. 20. Each side was ordered to bear its own attorney fees and costs, indicating no fee-shifting under 35 U.S.C. § 285 or Rule 54. The without-prejudice designation is legally significant: it means the dismissal carries no res judicata effect, and Linfo IP retains the right to refile the same claims against Carparts.com or other defendants.
The 111-day duration and absence of any substantive ruling on infringement, validity, or claim construction suggests the parties likely reached a private resolution — or Linfo IP chose a strategic withdrawal — before the case reached any contested motion. The public record does not disclose whether a licensing agreement, covenant not to sue, or other commercial arrangement was reached. What is clear is that US9092428B1 remains an active, unchallenged asset in Linfo IP’s portfolio.
Filing to Dismissed without Prejudice in 111 days
111 days — resolved well below the median district court patent case duration
Dismissed without prejudice: what the court order means for both sides
Without prejudice means the door stays open
A dismissal without prejudice under Federal Rule of Civil Procedure 41 extinguishes this particular action but does not adjudicate the merits. No finding of infringement, non-infringement, or invalidity was made. Linfo IP is not barred from reasserting US9092428B1 against Carparts.com or any other party in a future action, subject to applicable statutes of limitations.
No merits rulingPatent holder retains full enforcement rights
Because the dismissal is without prejudice, Linfo IP LLC preserves its right to refile against Carparts.com or pursue other defendants in the automotive e-commerce or text-discovery technology space. The patent, US9092428B1, has not been invalidated or narrowed. Any company operating a comparable product-discovery or content-recommendation interface should treat this patent as an active enforcement risk.
US9092428B1 still enforceableCarparts.com exits without admission — but faces residual exposure
Carparts.com Inc secured a clean exit from this litigation without any adverse merits finding and without paying the plaintiff’s legal fees. However, the without-prejudice dismissal means it cannot rely on this outcome as a litigation shield. If no licence or covenant not to sue was obtained privately, Carparts.com remains exposed to a refiled action on the same patent.
No res judicata protectionText-discovery IP remains a live risk for e-commerce operators
The rapid, no-merits resolution is consistent with a litigation strategy targeting quick settlements before defendants mobilise full defences. Companies operating search, content-tagging, or product-discovery interfaces — particularly in automotive e-commerce — should assess their FTO exposure to US9092428B1. The absence of any IPR petition or invalidity ruling leaves the patent’s claims uncontested in the public record.
FTO assessment recommendedFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Linfo IP LLC | Company | Non-practising patent assertion entity — holder of US9092428B1Search in Eureka ↗ |
| Defendant | Carparts.com Inc | Company | Carparts.com Inc — online automotive parts and accessories retailerSearch 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 ↗ |
| Defendant counsel | Melissa Richards Smith | Attorney | Counsel for Carparts.com IncSearch in Eureka ↗ |
| Defendant law firm | Gillam & Smith, LLP | Law Firm | Representing Carparts.com IncSearch in Eureka ↗ |
| Presiding judge | Judge Brantley Starr | Judge | Texas Northern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s dismissal order, entered pursuant to a prior ruling at Doc. 20, disposed of all claims by all parties without prejudice and with no fee award. The reference to a prior order suggests the dismissal may have been procedurally scheduled or consent-based, rather than contested. Critically, the without-prejudice designation means no claim or defence was decided on the merits — the patent’s validity and Carparts.com’s alleged infringement remain legally undetermined. The mutual cost-bearing arrangement is neutral and does not indicate either party prevailed.
US9092428B1 — Information Discovery and Presentation in Text Content
US9092428B1, filed under application number US13/709827, claims a system, methods, and user interface directed at discovering and presenting information within text content. This technology domain encompasses intelligent parsing of text to surface relevant data points, contextual linking, and UI-layer presentation of derived information — capabilities increasingly embedded in e-commerce search, product description processing, and content recommendation engines.
For automotive e-commerce platforms that process large volumes of unstructured product text, catalogue descriptions, and user-generated content, the claims of US9092428B1 may read broadly on backend parsing logic and frontend presentation layers. As an NPE asset, the patent’s commercial value lies entirely in licensing and enforcement — there is no practising entity to negotiate cross-licences with. This asymmetry increases litigation risk for operating companies and makes early FTO analysis particularly valuable.
Should you run an FTO analysis against US9092428B1?
Any company operating a text-based product discovery interface, search functionality, or content-recommendation feature — especially in automotive e-commerce — should assess FTO exposure to US9092428B1 before this patent resurfaces in a refiled or broadened assertion campaign. The without-prejudice dismissal in Linfo IP v. Carparts.com confirms the patent is active and that the holder is willing to litigate in the Northern District of Texas. R&D and product teams building or updating text-parsing or UI-discovery features face the highest risk.
PatSnap Eureka’s FTO Search Agent allows IP and product teams to map the claims of US9092428B1 against specific product features in minutes — generating a structured claim chart, identifying prior art candidates, and flagging design-around opportunities. Eureka can also surface co-pending Linfo IP cases and related NPE activity to give you a complete picture of the assertion landscape before your next product release or feature update.
Run a freedom-to-operate analysis on US9092428B1 to assess your product’s exposure
Run FTO in Eureka →Similar text-discovery and e-commerce patent cases in N.D. Texas
Cases involving text-discovery, content-presentation patents, and NPE plaintiffs in the Northern District of Texas with comparable lifecycle and dismissal outcomes.
What this case signals for the e-commerce and text-discovery IP landscape
A 111-day dismissal without prejudice in the Northern District of Texas is a pattern worth understanding — particularly for automotive e-commerce and content-discovery platforms.
Short lifecycle cases in N.D. Texas often signal pre-trial licensing pressure
Cases filed and dismissed in under 120 days before any substantive ruling typically indicate a demand-and-settle dynamic. Linfo IP’s use of Ramey LLP — a firm associated with high-volume NPE litigation — is consistent with this pattern. Companies receiving assertion letters on text-discovery patents should assess early settlement economics carefully against the cost of full defence.
US9092428B1 is unchallenged — no IPR filed, no invalidity ruling on record
The dismissal left US9092428B1 intact and unreviewd on the merits. For competitors and adjacent technology companies, this means the patent’s claim scope has never been tested through adversarial proceedings. An inter partes review petition at the USPTO remains the most direct route to a validity determination — and the window may be strategic given the patent’s application date.
Linfo v Carparts.com — key questions answered
The dismissal without prejudice means no merits decision was made on infringement or validity of US9092428B1. Linfo IP LLC retains the right to refile the same claims against Carparts.com or other defendants. Carparts.com received no res judicata protection and cannot use this outcome as a defence in a future action.
Yes. A without-prejudice dismissal under Rule 41 does not bar Linfo IP LLC from reasserting US9092428B1 against Carparts.com Inc in a subsequent action, provided the refiling occurs within the applicable statute of limitations for patent infringement. Carparts.com should seek clarity on whether any private covenant not to sue was obtained as part of the resolution.
US9092428B1 claims a system, methods, and user interface for discovering and presenting information within text content. This is relevant to e-commerce platforms — particularly those processing product descriptions, catalogue text, or user-generated content — because the claims may read on text-parsing engines, contextual linking features, and search result presentation layers commonly used in online retail environments.
Linfo IP LLC was represented by William P. Ramey III of Ramey LLP — a firm with a significant history in NPE patent assertion cases in Texas federal courts. Carparts.com Inc was represented by Melissa Richards Smith of Gillam & Smith, LLP, a firm known for defending patent infringement cases in the Eastern and Northern Districts of Texas.
No. The court’s dismissal order expressly stated that each party would bear its own attorney fees and costs. This means no exceptional case finding under 35 U.S.C. § 285 was made, and no Rule 54 cost award was entered. The neutral fee arrangement is consistent with a consensual or pre-agreed resolution rather than a contested dismissal.
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