Linfo IP v. MariGold Foods: Infringement Suit Dismissed With Prejudice in 94 Days
Linfo IP, LLC asserted US9430131B1 — a patent covering systems, methods, and user interfaces for organizing unstructured data objects — against MariGold Foods, LLC in the Southern District of Texas. The plaintiff voluntarily dismissed its own claims with prejudice under Rule 41, closing the case permanently just 94 days after filing.
A data-organisation patent suit that ended before it began
On May 27, 2025, Linfo IP, LLC filed a patent infringement action against MariGold Foods, LLC in the United States District Court for the Southern District of Texas before Judge Keith P. Ellison, assigned Case No. 4:25-cv-02387. The asserted patent — US9430131B1, filed under application number US14/225422 — covers systems, methods, and user interfaces for organising unstructured data objects, a software-layer technology with potential applicability across e-commerce and content management platforms.
On August 29, 2025, just 94 days after the complaint was filed, Linfo IP filed a Notice of Voluntary Dismissal at ECF No. 12. Critically, the dismissal was entered with prejudice pursuant to Rule 41(a)(1)(A)(i) of the Federal Rules of Civil Procedure. A with-prejudice dismissal constitutes a final adjudication on the merits for res judicata purposes, meaning Linfo IP is permanently barred from asserting the same patent claims against MariGold Foods in any future action.
The 94-day resolution — before any substantive motion practice appears on the docket — is consistent with pre-trial settlement or a licensing resolution, though the public record does not disclose any financial terms. The with-prejudice designation, rather than the more common without-prejudice voluntary dismissal, suggests the parties reached a negotiated end state rather than Linfo IP simply withdrawing to preserve future options. The absence of defendant counsel on record may reflect that MariGold Foods was unrepresented or that engagement occurred informally before formal appearance.
Filing to Voluntary dismissal in 94 days
94 days — resolved well before typical district court trial timelines
Dismissed with prejudice: what the Rule 41 filing means for both parties
Rule 41(a)(1)(A)(i): voluntary dismissal by the plaintiff
Under Rule 41(a)(1)(A)(i), a plaintiff may dismiss an action without a court order by filing a notice before the defendant serves an answer or a motion for summary judgment. When that notice specifies dismissal with prejudice — as Linfo IP’s did — the dismissal operates as a final judgment on the merits. The court’s order at ECF No. 12 reflects this procedural pathway, confirmed by Judge Ellison’s order.
Final on the meritsWith prejudice bars Linfo IP from refiling these claims against MariGold
A voluntary dismissal with prejudice is legally distinct from one without prejudice. Without prejudice would preserve Linfo IP’s right to refile within applicable limitations periods. With prejudice extinguishes those claims permanently as against MariGold Foods — it cannot reassert US9430131B1 against this specific defendant. The public record does not disclose why Linfo IP agreed to this more restrictive outcome, though it typically signals a negotiated resolution.
Permanent bar on refilingMariGold Foods achieves permanent closure without a merits ruling
MariGold Foods obtained a with-prejudice dismissal — the strongest available outcome short of a formal invalidity or non-infringement finding — without any recorded defendant counsel on the public docket. The company faces no ongoing liability to Linfo IP under US9430131B1 and cannot be re-sued on these claims. Whether confidential licence terms were part of the resolution is not determinable from the public record.
No liability, permanent closureShort-cycle NPE litigation: what this pattern means for targets
Cases filed by non-practising entities through firms like Ramey LLP that resolve with prejudice in under 100 days are consistent with a licensing-first enforcement model. Targets operating platforms that manage unstructured content, product catalogues, or user-facing data objects should assess whether US9430131B1 poses forward-looking risk — particularly since the patent remains in force and Linfo IP may assert it against other defendants.
NPE licensing patternFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Linfo IP, LLC | Company | Non-practising entity — holder of US9430131B1 covering unstructured data UI systemsSearch in Eureka ↗ |
| Defendant | MariGold Foods, LLC | Company | MariGold Foods, LLC — food and nutrition products company based in the United StatesSearch 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 court’s order confirms dismissal with prejudice under Rule 41(a)(1)(A)(i), triggered by Linfo IP’s own notice at ECF No. 12. The with-prejudice designation is significant: it forecloses any future action by Linfo IP against MariGold Foods on these specific claims, functioning as a final merits adjudication for res judicata purposes. The order contains no invalidity finding, no damages award, and no claim construction — meaning the patent’s scope and validity remain untested by this proceeding.
US9430131B1 — System, methods, and UI for organising unstructured data objects
US9430131B1 was filed under application number US14/225422 and issued as a B1 grant, indicating it issued without any prior publication — a designation common for applications that proceeded directly to grant. The patent covers systems, methods, and user interfaces for organising unstructured data objects, a broad technical domain that intersects with content management, e-commerce product catalogues, document management platforms, and mobile or web application data layers. The B1 classification and grant number suggest the patent predates significant prior art consolidation in this space.
The strategic value of US9430131B1 for an NPE lies in the breadth of ‘unstructured data objects’ as a claim element. Almost any software platform that surfaces user-facing organisation tools for heterogeneous data — including tags, folders, search indexes, or drag-and-drop interfaces — could potentially be mapped to this patent’s claims. This makes it a versatile enforcement asset applicable across SaaS, e-commerce, and enterprise software verticals. Companies operating in these spaces should assess claim scope against their own product architectures before receiving demand correspondence.
Should your platform run an FTO check against US9430131B1?
Any product or platform team building or maintaining a user interface for organising, tagging, sorting, or displaying unstructured data objects — including e-commerce backends, document management tools, CMS platforms, or mobile data organisation apps — should consider whether US9430131B1 reads on their implementation. The MariGold Foods suit demonstrates that Linfo IP is actively asserting this patent against commercial defendants in a variety of sectors, not solely software-native companies.
PatSnap Eureka’s FTO Search Agent enables R&D and IP teams to map their product architecture against the claims of US9430131B1 in minutes. Upload your feature specification or technical description and Eureka will identify claim overlap, flag prosecution history estoppel, and surface prior art that could support an IPR petition or design-around strategy — before a demand letter arrives.
Run a freedom-to-operate analysis on US9430131B1 to assess your product’s exposure
Run FTO in Eureka →Similar unstructured data UI patent suits in S.D. Texas
Explore related NPE enforcement actions involving software UI and data organisation patents filed in the Southern District of Texas by Ramey LLP and similar firms.
What this case signals for the unstructured data software IP landscape
A swift with-prejudice exit by an NPE in the S.D. Texas is rarely incidental — it warrants close reading for companies in adjacent technology sectors.
US9430131B1 remains live and assertable against other defendants
The with-prejudice dismissal resolves only the MariGold Foods dispute. Linfo IP retains full rights to enforce US9430131B1 against any other party. Companies offering platforms, apps, or back-end systems that organise unstructured data objects through custom UI should treat this case as an early warning rather than a settled matter.
Ramey LLP’s enforcement cadence warrants proactive monitoring
William P. Ramey III and Ramey LLP are prolific filers in the Southern District of Texas. A pattern of rapid with-prejudice resolutions across their docket is consistent with volume licensing campaigns. In-house IP teams at software, e-commerce, and SaaS companies should monitor new filings against peers as a proxy for licensing demand letters that may precede formal suit.
Linfo v MariGold — key questions answered
The case was dismissed with prejudice. Linfo IP filed a Notice of Voluntary Dismissal at ECF No. 12, and Judge Ellison entered an order confirming dismissal with prejudice under Rule 41(a)(1)(A)(i). This permanently bars Linfo IP from asserting the same claims against MariGold Foods in any future action.
US9430131B1 covers systems, methods, and user interfaces for organising unstructured data objects, filed under application US14/225422. The precise basis for asserting it against MariGold Foods — a food and nutrition company — is not detailed in the public record, but the case is consistent with broad NPE enforcement campaigns targeting commercial entities whose platforms may incorporate such UI functionality.
Yes. The with-prejudice dismissal applies only to Linfo IP’s claims against MariGold Foods specifically. The patent remains in force and Linfo IP retains full enforcement rights against any other party. Companies in software, e-commerce, or content management sectors should treat US9430131B1 as an active enforcement risk.
Ramey LLP, led by William P. Ramey III, is a prolific patent enforcement firm operating primarily in the Southern District of Texas. Their portfolio of NPE filings frequently resolves with rapid dismissals, consistent with licensing-focused enforcement campaigns. Companies that receive demand letters from entities represented by Ramey LLP should monitor resolution patterns across their broader docket as a benchmarking tool.
No. The case closed in 94 days via voluntary dismissal before any claim construction, summary judgment, or trial. The validity and scope of US9430131B1 were not adjudicated. This means the patent’s claims remain untested by this proceeding and cannot be argued to have survived any court scrutiny as a result of this case.
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