ACQIS v. Panasonic Holdings: 9-Patent PCI Bus Dispute Dismissed With Prejudice
ACQIS, LLC asserted nine patents covering low-voltage differential signal (LVDS) channels and PCI bus serial interface technology against Panasonic Holdings and its North American subsidiary. Filed in the Western District of Texas before Judge Alan Albright, the case resolved via joint motion to dismiss all claims and counterclaims with prejudice after 389 days — each party bearing its own costs.
Nine PCI bus patents, two Panasonic entities, one joint exit
On 22 December 2023, ACQIS, LLC — a patent assertion entity holding a portfolio of nine US patents covering PCI bus serial interface architecture and low-voltage differential signal (LVDS) channel technology — filed suit against Panasonic Holdings Corp. and Panasonic Corp. of North America in the Western District of Texas (Case No. 6:23-cv-00880). The asserted patents span computer system architectures where a CPU or peripheral bridge communicates serial bits of PCI bus transactions over LVDS channels, as well as data security methods for computer modules.
The case closed on 14 January 2025 when the court granted a joint motion to dismiss all claims and counterclaims with prejudice. A with-prejudice dismissal is a full adjudication on the merits for preclusion purposes: ACQIS cannot refile the same patent claims against the same Panasonic entities on the same accused products. Critically, the court ordered each party to bear its own costs, expenses, and attorneys’ fees — a cost-neutral exit that typically suggests a negotiated resolution rather than a unilateral capitulation.
At 389 days from filing to closure, the case resolved in slightly over a year — relatively expeditious for a nine-patent portfolio assertion in the Western District of Texas. The cost-neutral fee award and the joint nature of the motion are consistent with a confidential settlement, though the public record is silent on any licensing terms, royalty payments, or cross-licensing arrangements. What drove the resolution — claim construction risk, IPR exposure on the reissue patents, or commercial negotiation — remains undisclosed.
Filing to Dismissed with Prejudice in 389 days
389 days — resolved before trial, consistent with W.D. Texas median for complex patent cases
Dismissed with prejudice: what the joint exit means for both parties
With-prejudice dismissal bars any refiling on the same claims
A dismissal with prejudice under Federal Rules operates as a final judgment on the merits. ACQIS cannot refile infringement claims against Panasonic Holdings or Panasonic Corp. of North America based on the same nine patents and the same accused products. The joint motion signals mutual agreement — neither side was forced out; both parties consented to the termination on these terms.
Final on the meritsACQIS exits with prejudice but avoids an adverse invalidity ruling
For ACQIS, a with-prejudice dismissal forecloses this defendant pairing permanently. However, because no court ruled on validity or infringement, the nine patents remain nominally intact and enforceable against other defendants. The cost-neutral fee order suggests ACQIS did not face an ‘exceptional case’ finding, preserving its ability to assert the portfolio in future actions against different accused infringers.
Patents survive; Panasonic claims closedPanasonic secures finality without an invalidity record
Panasonic avoids a merits ruling on infringement but also did not secure a formal invalidity judgment that could be used offensively. The with-prejudice dismissal provides certainty that ACQIS cannot re-sue on these specific patents for the same products. No fee award was obtained, suggesting Panasonic’s counterclaims — which are also dismissed with prejudice — were likewise resolved without a prevailing-party determination.
Finality secured; no invalidity recordNine live patents remain available against other PCI bus technology makers
The resolution leaves ACQIS’s PCI bus and LVDS patent portfolio available for assertion against other computer system and peripheral hardware manufacturers. Companies designing products with CPU-to-peripheral bridge LVDS serial interfaces — particularly those using PCI Express or legacy PCI bus architectures — should monitor ACQIS’s litigation history. The inclusion of reissue patents (RE044739, RE044654, RE045140) suggests deliberate portfolio maintenance to broaden claim scope.
Portfolio remains enforceableFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | ACQIS, LLC | Company | Patent assertion entity — holder of 9 PCI bus serial interface and LVDS technology patentsSearch in Eureka ↗ |
| Defendant | Panasonic Holdings, Corp. | Company | Global consumer electronics and industrial technology conglomerate with North American subsidiarySearch in Eureka ↗ |
| Co-Defendant | Panasonic Cop. Of North America | Individual | Search in Eureka ↗ |
| Plaintiff counsel | Ann Marie Byers | Attorney | Counsel for ACQIS, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Case L. Collard | Attorney | Counsel for ACQIS, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Gregory S. Tamkin | Attorney | Counsel for ACQIS, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Paige Arnette Amstutz | Attorney | Counsel for ACQIS, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Dorsey & Whitney LLP | Law Firm | Representing ACQIS, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Scott, Douglass & McConnico LLP | Law Firm | Representing ACQIS, LLCSearch in Eureka ↗ |
| Defendant counsel | Brian K. Erickson | Attorney | Counsel for Panasonic Holdings, Corp.Search in Eureka ↗ |
| Defendant counsel | Matthew Satchwell | Attorney | Counsel for Panasonic Holdings, Corp.Search in Eureka ↗ |
| Defendant law firm | DLA Piper US LLP | Law Firm | Representing Panasonic Holdings, Corp.Search in Eureka ↗ |
| Presiding judge | Judge Alan D Albright | Judge | Texas Western District CourtSearch in Eureka ↗ |
Official order — verbatim text
The verdict text confirms a joint motion granted in full — all claims by ACQIS and all defenses and counterclaims by Panasonic are dismissed with prejudice simultaneously. The symmetrical with-prejudice treatment of both sides’ pleadings, combined with the cost-neutral fee order, is the hallmark of a negotiated exit rather than a unilateral concession. No merits determination was made on infringement or validity, leaving the legal status of all nine patents unchanged for future enforcement purposes.
US8756359B2 and 8 further patents — PCI bus LVDS serial interface architecture
The nine asserted patents cluster around a core architecture in which a CPU or peripheral bridge in a computer system is directly connected to a low-voltage differential signal (LVDS) channel that carries serial bits representing PCI bus transactions. Application dates across the portfolio span from US13/087912 (filed April 2011) through US14/511093 (filed October 2014), reflecting a sustained prosecution strategy. Three reissue patents (RE044739, RE044654, RE045140) indicate ACQIS returned to the USPTO to broaden or correct claim language post-grant — a deliberate step that can significantly expand the set of accused products.
PCI bus and its serial successor PCI Express remain foundational in server, industrial, and embedded computer architectures. ACQIS’s portfolio targets the interface layer between processor and peripheral — a component present in virtually every modern computer system. The inclusion of a data security method patent (US8977797B2) widens the assertion surface beyond pure bus architecture into secure data handling in modular computer systems. For hardware OEMs, peripheral bridge IC integrators, and industrial computer manufacturers, this portfolio represents a persistent enforcement risk that the Panasonic settlement does not extinguish.
Should you run an FTO against US8756359B2 and the ACQIS LVDS portfolio?
Any R&D or product team designing computer systems where a CPU or peripheral bridge communicates with peripherals over a differential serial channel — including legacy PCI, PCI-X, or architectures that serialize PCI bus transactions over LVDS links — should treat this nine-patent portfolio as a live FTO priority. The three reissue patents are particularly relevant: their amended claims may cover design-arounds that pre-date the reissue but fall within the new claim language. Industrial PC, embedded system, and server blade manufacturers are squarely within the assertion perimeter.
PatSnap Eureka’s FTO Search Agent can map each of the nine ACQIS patents against your product architecture in a fraction of the time of manual claim charting. Upload your system-level block diagrams or component specifications and Eureka will flag claim elements that read on LVDS-based PCI bus serial interfaces, identify prosecution history estoppel from the reissue proceedings, and surface prior art that may support IPR petitions against the reissue patents. Start with an automated landscape report before commissioning a full legal FTO opinion.
Run a freedom-to-operate analysis on US8756359B2 to assess your product’s exposure
Run FTO in Eureka →Similar PCI bus and LVDS serial interface patent cases in W.D. Texas
Explore related patent infringement cases involving PCI bus serial interface and LVDS channel technology asserted in the Western District of Texas and comparable federal venues.
What this case signals for the PCI bus and LVDS interface IP landscape
ACQIS’s nine-patent assertion and cost-neutral exit highlight active enforcement risk across the computer interface and peripheral hardware sector.
Reissue patents in the portfolio signal broadened claim scope — audit now
Three of the nine asserted patents are reissues (RE044739, RE044654, RE045140). Reissue patents are specifically amended to correct or broaden claims after original grant. Any company making or selling computer systems with LVDS-based PCI bus serial interface should audit its products against the reissued claims, which may cover more ground than the original patent text suggests.
Cost-neutral dismissal is consistent with a confidential licence — watch for repeat filings
ACQIS has a documented history of asserting this PCI bus portfolio across multiple defendants. A cost-neutral, with-prejudice dismissal in W.D. Texas before Judge Albright is a pattern consistent with confidential licensing resolution. IP teams at peripheral bridge and computer module manufacturers should track ACQIS’s new filings and compare accused product descriptions against their own product lines.
ACQIS v Panasonic — key questions answered
The case was dismissed with prejudice on 14 January 2025 pursuant to a joint motion by both parties. All claims by ACQIS and all counterclaims by Panasonic were dismissed, with each party bearing its own costs and attorneys’ fees. No merits ruling on infringement or validity was issued.
ACQIS asserted nine US patents: US8756359B2, USRE044739E, US8626977B2, USRE044654E, USRE045140E, US8977797B2, US9529768B2, US9703750B2, and US8234436B2. The portfolio covers PCI bus serial interface architecture using LVDS channels, peripheral bridge communication methods, and data security for computer modules.
No. A dismissal with prejudice bars ACQIS from re-suing Panasonic Holdings and Panasonic Corp. of North America on the same patents and products, but it does not constitute a finding of invalidity. The nine patents remain in force and enforceable against other defendants. No court ruled on claim construction, infringement, or validity.
Three patents in the asserted portfolio are reissues (USRE044739E, USRE044654E, USRE045140E). Reissue patents have been returned to the USPTO and reissued with amended claims — often broadened. This means the effective claim scope may be wider than the original patents, and design-arounds based on original claim language may not avoid the reissued claims. Potential defendants should analyse the reissue prosecution history carefully.
ACQIS was represented by Dorsey & Whitney LLP and Scott, Douglass & McConnico LLP, with attorneys Ann Marie Byers, Case L. Collard, Gregory S. Tamkin, and Paige Arnette Amstutz. Panasonic was represented by DLA Piper US LLP, with attorneys Brian K. Erickson and Matthew Satchwell.
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