InnoMemory v. Amegy Bank: Memory Patent Suit Ends in 46-Day Voluntary Dismissal
InnoMemory, LLC filed suit against Amegy Bank National Association in the Eastern District of Texas, asserting US7057960B1 — a patent covering power-reduction methods for memory device refresh operations. The case closed just 46 days after filing when InnoMemory voluntarily dismissed without prejudice, leaving the door open for future action.
Memory IP assertion ends early — but leaves claims legally alive
InnoMemory, LLC filed this patent infringement action on 1 February 2025 in the Eastern District of Texas against Amegy Bank National Association. The single asserted patent, US7057960B1, covers a method and architecture for reducing power consumption in memory devices during refresh operations — a foundational concern in DRAM and embedded memory system design. The assertion against a financial institution suggests InnoMemory may be targeting entities that deploy memory-intensive computing infrastructure.
The case closed on 19 March 2025 — just 46 days after filing — when InnoMemory filed a Notice of Voluntary Dismissal under Rule 41(a)(1)(A)(i). The Court accepted and acknowledged the notice, dismissing all claims without prejudice. Critically, no costs were awarded; all pending relief was denied as moot. A dismissal without prejudice means InnoMemory’s infringement claims are not extinguished and could be reasserted in a future action against Amegy Bank or other defendants.
A 46-day lifecycle is notably short, consistent with pre-litigation settlement negotiations, licensing discussions, or a strategic decision to refile in a different venue or against a broader defendant pool. The public record is silent on whether any agreement was reached. The choice of Eastern District of Texas — a historically plaintiff-favourable venue for patent assertions — combined with swift dismissal may indicate the filing itself served a tactical or negotiating purpose.
Filing to Voluntary dismissal in 46 days
46 days — well below the median E.D. Texas patent case lifespan, suggesting early resolution before substantive litigation
Voluntarily dismissed: what the without-prejudice ruling means for both parties
Rule 41(a)(1)(A)(i): plaintiff’s unilateral right to exit
Under Rule 41(a)(1)(A)(i), a plaintiff may voluntarily dismiss a case without a court order before the defendant has served an answer or a motion for summary judgment. This is a unilateral procedural right — the court has no discretion to refuse. The dismissal here was filed as a Notice, not a motion, confirming no responsive pleading had yet been served. The court’s role was purely to accept and acknowledge the filing.
Procedural exit — no merits rulingWithout prejudice: InnoMemory’s claims survive dismissal
A dismissal without prejudice does not extinguish InnoMemory’s patent infringement claims. InnoMemory retains the legal right to refile against Amegy Bank or assert US7057960B1 against other defendants. The public record does not disclose whether a licensing agreement or settlement was reached. If no deal was struck, Amegy Bank and similarly situated companies remain exposed to reassertion. IP teams should treat this outcome as a pause, not a resolution.
Claims not extinguishedAmegy Bank exits without a liability finding — but no immunity
Amegy Bank avoids any judgment on infringement, validity, or damages. No costs were awarded in its favour despite the dismissal. Importantly, a without-prejudice dismissal provides no legal bar — such as res judicata — against a future suit on the same patent. The bank’s legal exposure to US7057960B1 remains technically open. Whether any confidential resolution removed that risk is not discernible from the public record.
No res judicata protectionMemory IP assertions against financial sector users: a pattern to watch
Asserting a memory architecture patent against a bank — rather than a semiconductor manufacturer — suggests InnoMemory may be targeting downstream technology users. This tactic, common among non-practising entities, can generate licensing revenue without engaging the most technically equipped defendants. Financial institutions and other enterprise technology users deploying memory-intensive infrastructure should monitor US7057960B1 and assess their exposure through a freedom-to-operate analysis.
Downstream user targetingFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | InnoMemory, LLC | Company | Patent assertion entity — holder of US7057960B1 covering memory refresh power-reduction methodsSearch in Eureka ↗ |
| Defendant | Amegy Bank National Association | Company | Amegy Bank National Association — regional commercial bank headquartered in TexasSearch in Eureka ↗ |
| Plaintiff counsel | Isaac Phillip Rabicoff | Attorney | Counsel for InnoMemory, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Rabicoff Law LLC | Law Firm | Representing InnoMemory, LLCSearch in Eureka ↗ |
| Defendant counsel | Kelly Elizabeth Ransom | Attorney | Counsel for Amegy Bank National AssociationSearch in Eureka ↗ |
| Defendant law firm | Kelly Hart & Hallman LLP (La) | Law Firm | Representing Amegy Bank National AssociationSearch in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Texas Eastern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s order is purely procedural — it accepts and acknowledges InnoMemory’s Rule 41(a)(1)(A)(i) notice and imposes no substantive ruling on infringement, validity, or damages. The explicit ‘WITHOUT PREJUDICE’ language is significant: it confirms InnoMemory’s claims survive and may be reasserted. The denial of all pending relief as moot confirms no injunctive or monetary relief was granted. Neither party obtained a merits determination from this proceeding.
US7057960B1 — Memory device refresh power-reduction method and architecture
US7057960B1, filed under application number US10/629667, protects a method and architecture for reducing the power consumption of memory devices during refresh operations — a critical function in DRAM and similar volatile memory technologies. Refresh operations are mandatory to preserve stored data but are a significant source of power draw, particularly in large-scale or always-on deployments. The patent addresses this through architectural innovations that optimise how and when refresh cycles are executed.
For the semiconductor and enterprise technology sectors, power-efficient memory refresh is commercially significant in data centre infrastructure, financial trading systems, and embedded computing. A patent covering refresh power-reduction architecture can be asserted not only against chip manufacturers but against any entity deploying systems embodying the claimed method — including end-user organisations such as banks. InnoMemory’s assertion against Amegy Bank illustrates precisely this downstream enforcement risk, making US7057960B1 a relevant monitoring target for enterprise IT procurement and IP teams.
Should you run an FTO against US7057960B1?
Any organisation deploying memory-intensive computing infrastructure — including financial institutions, data centre operators, cloud providers, and enterprise IT teams — should assess exposure to US7057960B1. This case demonstrates that the patent’s owner is willing to assert it against end users, not just hardware manufacturers. If your systems rely on DRAM or embedded memory with refresh cycles, the claimed architecture may be relevant to your technology stack. A freedom-to-operate analysis can identify whether your deployed systems fall within the patent’s claim scope before a demand letter arrives.
PatSnap Eureka’s FTO Search Agent can map the claims of US7057960B1 against your product architecture and flag overlapping prior art, expired claims, or design-around opportunities. Eureka surfaces the full prosecution history, citation landscape, and related family members — giving IP counsel and R&D teams the structured evidence base needed to make an informed clearance decision. Start with a claim-by-claim analysis of the memory refresh method claims to determine whether your implementation is within scope.
Run a freedom-to-operate analysis on US7057960B1 to assess your product’s exposure
Run FTO in Eureka →Similar memory patent infringement cases in E.D. Texas
Cases involving memory architecture and power-reduction patents asserted in the Eastern District of Texas by non-practising entities against technology end users.
What this case signals for the memory IP and enterprise tech landscape
A 46-day dismissal without prejudice in E.D. Texas rarely signals the end of a patent assertion campaign.
Early dismissal in E.D. Texas is a known pre-licensing tactic
Filing in a plaintiff-favourable venue and dismissing within weeks — before the defendant incurs significant legal costs — is a recognized pattern in non-practising entity campaigns. It creates settlement pressure without full litigation risk. Companies receiving demand letters or complaints on memory-related patents should assess whether the filing is a negotiating opener rather than a committed litigation effort.
US7057960B1 remains enforceable — FTO analysis is warranted
The patent was not invalidated, licensed of record, or otherwise neutralised by this proceeding. Organisations deploying DRAM or embedded memory systems with refresh cycles — particularly in banking, fintech, or enterprise IT — should run a freedom-to-operate assessment against US7057960B1 to understand current exposure before any demand letter arrives.
InnoMemory v Amegy — key questions answered
InnoMemory, LLC filed a patent infringement suit against Amegy Bank in the Eastern District of Texas on 1 February 2025, asserting US7057960B1. The case was voluntarily dismissed without prejudice by InnoMemory on 19 March 2025 — 46 days after filing — under Rule 41(a)(1)(A)(i). No merits ruling was issued and no costs were awarded.
A dismissal without prejudice does not bar InnoMemory from refiling the same infringement claims against Amegy Bank. There is no res judicata effect. Amegy Bank obtained no invalidity ruling, no non-infringement finding, and no licence of record. Its legal exposure to US7057960B1 remains open unless a confidential settlement or licence was concluded — which the public record does not confirm.
US7057960B1 covers a method and architecture for reducing power consumption in memory devices during refresh operations, primarily relevant to DRAM and volatile memory systems. Downstream users — including financial institutions, data centres, and enterprise IT operators — deploying systems with such memory may be within scope of the claims, as illustrated by InnoMemory’s assertion against Amegy Bank.
The Eastern District of Texas is historically plaintiff-favourable for patent assertions, offering fast dockets and jury pools considered sympathetic to patent holders. Filing in this venue and dismissing quickly — before significant defendant costs accrue — is consistent with a pre-litigation negotiating tactic used by non-practising entities to generate settlement or licensing discussions without committing to full litigation.
Under Federal Rule of Civil Procedure 41(a)(1)(B), if a plaintiff previously dismissed an action involving the same claim in any federal or state court, a second voluntary dismissal operates as an adjudication on the merits — effectively a with-prejudice dismissal. Counsel for Amegy Bank should investigate InnoMemory’s prior filing history to determine whether a second dismissal would carry this consequence.
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