InnoMemory v. Exascend: Voluntary Dismissal Without Prejudice After 164 Days
InnoMemory, LLC filed suit against Exascend Co. Ltd. in the Eastern District of Texas asserting US7057960B1, a patent covering power-reduction methods for memory device refresh operations. The case closed after just 164 days when InnoMemory voluntarily dismissed all claims without prejudice — leaving the door open for future enforcement.
Memory patent dismissed early — but without prejudice keeps pressure on
On August 13, 2024, InnoMemory, LLC filed a patent infringement action against Exascend Co. Ltd. in the United States District Court for the Eastern District of Texas (Case No. 2:24-cv-00669). The case centred on US7057960B1, a patent protecting methods and architecture for reducing power consumption in memory devices during refresh operations — a technically significant area for flash storage and DRAM-based products.
The case was resolved on January 24, 2025, when InnoMemory filed a Notice of Voluntary Dismissal under Rule 41(a)(1)(A)(i). The court accepted and acknowledged the notice, closing the case with all claims dismissed without prejudice. No costs were awarded and all pending requests for relief were denied as moot. Crucially, a dismissal without prejudice means InnoMemory retains the right to refile the same claims against Exascend at a future date.
The 164-day duration and early voluntary exit — before any substantive motions or Markman proceedings — suggests the parties may have reached a private accommodation, or that InnoMemory chose to regroup strategically. The public record does not disclose any settlement terms or reasons for the dismissal, leaving the ultimate enforceability of US7057960B1 unresolved and the competitive dynamic between these parties an open question.
Filing to Dismissed without Prejudice in 164 days
164 days — well under the median time-to-trial in E.D. Texas, suggesting early resolution before substantive litigation began
Voluntarily dismissed: what the without-prejudice ruling means for both parties
Rule 41(a)(1)(A)(i) allows exit before answer is filed
Under Federal Rule of Civil Procedure 41(a)(1)(A)(i), a plaintiff may voluntarily dismiss a case without a court order before the defendant has served an answer or motion for summary judgment. InnoMemory exercised this right, and the court accepted the notice as procedurally valid. This mechanism is the cleanest exit route available — it requires no judicial approval and leaves no adverse merits ruling on record.
No court order requiredWithout prejudice vs. with prejudice: the public record is silent on intent
A dismissal without prejudice allows InnoMemory to refile the same claims in the future, subject to applicable statutes of limitations and any intervening developments such as IPR filings or prior art challenges. A dismissal with prejudice, by contrast, would permanently bar refiling. The notice expressly states ‘WITHOUT PREJUDICE,’ but the public record does not disclose whether a settlement, licensing agreement, or other arrangement motivated this choice — leaving the strategic intent ambiguous.
Refiling remains possibleExascend escapes a merits ruling — but faces continued exposure
Exascend obtained no invalidity ruling, no non-infringement finding, and no fee award. While the immediate litigation pressure is removed, the without-prejudice dismissal means Exascend cannot treat US7057960B1 as neutralised. Any product lines implicated by the memory refresh power-reduction claims remain technically exposed to future assertion. Exascend may wish to pursue a proactive FTO or IPR strategy to reduce long-term uncertainty.
No immunity from future suitUS7057960B1 remains live — sector-wide exposure persists
The dismissal without prejudice does nothing to diminish the enforceability of US7057960B1. Other memory device manufacturers and flash storage vendors should note that the patent survived this litigation without any adverse ruling. Companies designing or selling products that perform power-optimised refresh operations — including DRAM controllers, NAND flash devices, and embedded memory systems — should assess whether their architectures fall within the patent’s claims.
Patent remains enforceableFull 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 | Exascend Co. Ltd. | Company | Exascend Co. Ltd. — flash storage and memory product manufacturerSearch 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 ↗ |
| 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 InnoMemory’s Rule 41(a)(1)(A)(i) notice and closes the docket without adjudicating any claim on its merits. The explicit ‘WITHOUT PREJUDICE’ language is significant: it preserves InnoMemory’s right to refile and forecloses any argument that the dismissal constitutes a final judgment on the merits. Exascend receives no invalidity finding, no non-infringement declaration, and no fee-shifting protection. The denial of pending relief as moot confirms no substantive relief was ever granted.
US7057960B1 — Memory device power reduction in refresh operations
US7057960B1 (application no. US10/629667) protects a method and architectural approach for reducing power consumption in memory devices during refresh operations. Refresh cycles are a fundamental and power-intensive aspect of volatile memory operation — particularly in DRAM — where periodic electrical refresh is required to prevent data loss. Patents targeting power optimisation in this domain are technically consequential, addressing a persistent engineering challenge in mobile, embedded, and high-performance computing environments.
From a competitive standpoint, US7057960B1 sits at the intersection of memory architecture and power management — two areas of intense R&D investment and IP activity across the semiconductor sector. Exascend’s focus on flash storage and memory products places it squarely within the potential claim scope. The patent’s survival of this litigation without any adverse ruling strengthens its notional enforceability, and other vendors supplying DRAM controllers, memory modules, or SSD controllers with refresh management logic should treat it as a credible enforcement risk.
Should you run an FTO against US7057960B1?
Any R&D team or product manager working on DRAM controllers, embedded memory systems, NAND flash devices, or SSD firmware that manages memory refresh cycles should assess exposure to US7057960B1. The patent’s claims focus on architectural methods for reducing refresh-related power draw — a feature present in a wide range of modern memory products. The lack of any Markman ruling means claim scope is undefined, making independent FTO analysis essential before product launch or market entry.
PatSnap Eureka’s FTO Search Agent can map the claims of US7057960B1 against your specific product architecture, identify relevant prior art that could support an IPR petition, and flag related continuations or family members that may extend the IP risk footprint. For companies selling into markets where Exascend competes — or where InnoMemory may assert next — a structured FTO report provides the evidentiary foundation needed for both freedom-to-operate clearance and licensing negotiation strategy.
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
Explore patent infringement actions in the Eastern District of Texas involving memory device architecture, DRAM refresh technology, and flash storage IP — cases that share the technical and procedural profile of InnoMemory v. Exascend.
What this case signals for the memory IP enforcement landscape
An early voluntary exit in E.D. Texas typically signals leverage rather than weakness — and US7057960B1 remains a live threat.
Without-prejudice exits are a known pressure tactic in patent assertion
Patent assertion entities frequently file in E.D. Texas, extract early engagement, and then dismiss without prejudice — preserving the ability to refile or use the filing as leverage in licensing discussions. InnoMemory’s rapid exit before any substantive motion is consistent with this pattern. Defendants and similarly situated companies should monitor for follow-on filings or licensing outreach.
Exascend should consider proactive IPR to neutralise the patent
Without a merits ruling, US7057960B1 remains fully enforceable. Exascend — and any other company in the memory refresh power-reduction space — should evaluate whether prior art exists to support an inter partes review petition at the USPTO. An IPR estoppel, if successful, would provide far stronger protection than a without-prejudice dismissal.
InnoMemory v Exascend — key questions answered
It means InnoMemory chose to end the case before any merits ruling, and all claims were dismissed without prejudice under Rule 41(a)(1)(A)(i). Exascend received no invalidity or non-infringement finding. InnoMemory retains the right to refile the same claims in the future, subject to applicable statutes of limitations.
US7057960B1 protects a method and architectural design for reducing power consumption in memory devices during refresh operations. Refresh cycles are a fundamental aspect of volatile memory such as DRAM, and patents in this area have broad applicability to memory controllers, embedded systems, and solid-state storage devices.
Yes. Because the dismissal was without prejudice, InnoMemory is not barred from refiling. However, future refiling would be subject to the applicable statute of limitations for patent infringement (typically six years under 35 U.S.C. § 286) and any intervening developments such as a successful IPR invalidating the patent.
The Eastern District of Texas is a historically favoured venue for patent assertion entities due to its plaintiff-friendly reputation, experienced patent judiciary, and established case management procedures. InnoMemory’s counsel at Rabicoff Law LLC frequently files in this district.
No. A voluntary dismissal without prejudice has no binding effect on the patent’s validity or enforceability against third parties. US7057960B1 remains in force and can be asserted against any party whose products fall within its claims. The absence of any claim construction or invalidity ruling means the patent’s scope remains judicially undefined.
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