Patent Armory v. Luby’s Restaurant Corp: Five Call Routing Patents, 69-Day Dismissal
Patent Armory, Inc. asserted five US patents covering intelligent call routing, telephony control, and communication auction systems against Luby’s Restaurant Corporation in the Eastern District of Texas. The case resolved in just 69 days when Patent Armory voluntarily dismissed all claims without prejudice, with each party bearing its own costs.
Five-Patent Call Routing Assertion Ends in Swift Voluntary Exit
On March 9, 2024, Patent Armory, Inc. filed suit against Luby’s Restaurant Corporation in the Eastern District of Texas (Case No. 2:24-cv-00166), asserting five US patents: US9456086B1, US10491748B1, US7269253B1, US7023979B1, and US10237420B1. The patents collectively cover intelligent communication routing systems, auction-based entity matching methods, and telephony control with intelligent call routing — technologies commercially relevant to restaurant chains operating customer-facing phone and digital communication infrastructure.
On May 17, 2024 — just 69 days after filing — Patent Armory filed a Notice of Voluntary Dismissal Without Prejudice under Rule 41(a)(1)(A)(i). Judge Rodney Gilstrap accepted and acknowledged the dismissal, ordering that all claims and causes of action against Luby’s Restaurant Corporation are dismissed without prejudice, with each party to bear its own costs, expenses, and attorneys’ fees. No merits adjudication took place.
The 69-day duration and cost-sharing order are consistent with a pre-answer dismissal, suggesting the case resolved before Luby’s filed a formal response, which is the earliest procedural stage at which a plaintiff may dismiss unilaterally as of right. The public record does not disclose whether a settlement or licensing agreement was reached privately; the without-prejudice designation leaves Patent Armory free to refile. What drove the exit — whether licensing resolution, strategic withdrawal, or other factors — is not ascertainable from the available record.
Filing to Voluntary dismissal in 69 days
69 days — significantly faster than the E.D. Texas median patent case duration
Voluntarily dismissed: what the without-prejudice ruling means for both parties
Rule 41(a)(1)(A)(i): plaintiff’s unilateral right to dismiss
Under Rule 41(a)(1)(A)(i), a plaintiff may dismiss an action without a court order at any time before the defendant serves an answer or a motion for summary judgment. This is a dismissal as of right — no judicial approval required. The 69-day timeline is consistent with the case not having advanced to a formal answer, making this the earliest and cleanest exit mechanism available to Patent Armory.
No merits adjudicationWithout prejudice vs. with prejudice: what the record says
The verdict text explicitly states dismissal is ‘without prejudice,’ meaning Patent Armory retains the right to refile the same claims against Luby’s in the future. A with-prejudice dismissal would have permanently barred refiling. The public record is clear on this point: this is a without-prejudice exit. Whether a private licensing arrangement or settlement influenced the decision to dismiss is not disclosed in the court record.
Refiling remains possibleLuby’s escapes judgment — but without full resolution
Luby’s Restaurant Corporation avoids any adverse patent ruling on the merits and faces no damages or injunction. The cost-sharing order means Luby’s cannot recover its legal fees from Patent Armory. Critically, the without-prejudice nature of the dismissal means the five asserted patents remain valid and enforceable, and Luby’s faces no preclusion bar should Patent Armory choose to refile — leaving residual IP risk on the table.
No fee recovery for defendantFive live patents covering call routing remain available for future assertion
Patent Armory’s five patents — spanning intelligent routing, telephony control, and auction-based communication matching — remain fully enforceable following this dismissal. Restaurant chains and hospitality operators deploying customer communication systems, call centre routing, or integrated telephony platforms should note that these patents have not been invalidated or licensed on publicly known terms. The without-prejudice exit preserves all of Patent Armory’s enforcement options against Luby’s and third parties.
Hospitality sector IP risk persistsFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Patent Armory, Inc. | Company | IP assertion entity — holder of US9456086B1 and four further call routing patentsSearch in Eureka ↗ |
| Defendant | Luby’s Restaurant Corporation | Company | Luby’s Restaurant Corporation — US casual dining restaurant chain operatorSearch in Eureka ↗ |
| Plaintiff counsel | Isaac Phillip Rabicoff | Attorney | Counsel for Patent Armory, Inc.Search in Eureka ↗ |
| Plaintiff law firm | Rabicoff Law LLC | Law Firm | Representing Patent Armory, Inc.Search in Eureka ↗ |
| Defendant counsel | Brandon W Duke | Attorney | Counsel for Luby’s Restaurant CorporationSearch in Eureka ↗ |
| Defendant law firm | Winston & Strawn, LLP | Law Firm | Representing Luby’s Restaurant CorporationSearch in Eureka ↗ |
| Presiding judge | Judge Rodney Gilstrap | Judge | Texas Eastern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s order accepting Patent Armory’s Rule 41(a)(1)(A)(i) notice is procedural rather than substantive — no claim construction, validity analysis, or infringement finding was reached. The explicit ‘without prejudice’ designation is legally significant: it preserves Patent Armory’s full right to refile against Luby’s. The cost-neutrality provision (each party bears own fees) is consistent with a pre-answer dismissal where no fee-shifting statute such as 35 U.S.C. § 285 had been triggered.
US9456086B1 and four further patents — intelligent call routing and telephony systems
The five asserted patents cover complementary layers of telephone and digital communication routing technology. US9456086B1 and US10491748B1 relate to intelligent routing and entity-matching auction systems respectively, while US7269253B1 and US7023979B1 address foundational telephony control architectures — the latter with application dates in the early 2000s. US10237420B1 extends the portfolio into more recent routing methods. Together they span core infrastructure for directing inbound calls, matching callers to agents or services, and controlling telephony platforms programmatically.
For the hospitality and restaurant sector, these patents are commercially salient: multi-location operators typically rely on centralised call routing systems — whether legacy PBX, VoIP, or cloud contact centre platforms — that may fall within the claimed methods. The portfolio’s age spread suggests potential coverage of both legacy and modern architectures. Patent Armory’s willingness to assert all five simultaneously against a single restaurant chain signals a broad-net enforcement posture, and the patents’ survival of this litigation without validity challenge reinforces their continued assertion utility.
Should you run an FTO against US9456086B1 and the Patent Armory call routing portfolio?
Any restaurant group, hospitality operator, retail chain, or customer-service-intensive business deploying centralised call routing, IVR systems, cloud contact centre platforms, or auction-based lead routing tools should treat this portfolio as a live FTO concern. Patent Armory has demonstrated willingness to assert all five patents simultaneously in E.D. Texas, and the without-prejudice dismissal means the threat has not been extinguished. Product and IT teams integrating third-party telephony or CCaaS platforms should verify that vendor indemnification covers these specific patent numbers.
PatSnap Eureka’s FTO Search Agent can map each of the five Patent Armory patents against your specific call routing architecture, flag claim language most relevant to your product stack, and surface the full prosecution history to identify narrowing amendments. Eureka’s litigation monitoring layer will also alert you to any new filings by Patent Armory across the Eastern and Western Districts of Texas, allowing your legal team to assess exposure before a demand letter arrives.
Run a freedom-to-operate analysis on US9456086B1 to assess your product’s exposure
Run FTO in Eureka →Similar call routing and telephony patent cases in E.D. Texas
Explore comparable NPE-led call routing and telephony patent infringement actions filed in the Eastern District of Texas involving similar intelligent routing and communication system patents.
What this case signals for the call routing and hospitality IP landscape
A five-patent assertion resolved in 69 days without merits adjudication raises questions about enforcement strategy and licensing leverage in the hospitality sector.
Pre-answer dismissals often signal off-record licensing activity
When a plaintiff voluntarily dismisses without prejudice at the Rule 41(a)(1)(A)(i) stage — before any answer is filed — it frequently suggests a licensing discussion concluded privately. The without-prejudice designation preserves the plaintiff’s leverage while the cost-sharing order avoids fee-shifting disputes. Companies in similar postures should audit their call routing infrastructure against these five patents.
E.D. Texas remains a preferred venue for NPE call routing assertions
Judge Gilstrap’s docket in the Eastern District of Texas continues to attract non-practicing entity patent assertions in communication technology. The swift resolution here does not diminish the strategic value Patent Armory extracted — a 69-day case with no adverse ruling and potential off-record consideration is a low-cost, high-leverage enforcement model that hospitality and retail operators should anticipate.
Patent v Luby’s — key questions answered
Patent Armory, Inc. filed suit against Luby’s Restaurant Corporation on March 9, 2024 in the Eastern District of Texas asserting five patents covering intelligent call routing and telephony systems. On May 17, 2024 — 69 days later — Patent Armory voluntarily dismissed all claims without prejudice under Rule 41(a)(1)(A)(i), with each party bearing its own costs. No merits ruling was issued.
Patent Armory asserted five US patents: US9456086B1 (intelligent communication routing), US10491748B1 (entity-matching auction system), US7269253B1 (telephony control with intelligent call routing), US7023979B1 (call routing system), and US10237420B1 (communication routing methods). The patents collectively cover telephony control architectures and automated call routing technologies.
A without-prejudice dismissal means Patent Armory retains the full legal right to refile the same patent infringement claims against Luby’s Restaurant Corporation in the future. No preclusion or res judicata bar was created. This contrasts with a with-prejudice dismissal, which would permanently extinguish the claims. The public record does not disclose whether any private licensing arrangement accompanied the dismissal.
The 69-day resolution is consistent with a Rule 41(a)(1)(A)(i) dismissal filed before the defendant served an answer — the earliest stage at which a plaintiff may dismiss as of right without court approval. This timeline suggests the litigation did not advance to substantive proceedings such as claim construction or discovery. Whether a private licensing or settlement discussion drove the voluntary exit is not disclosed in the court record.
Patent Armory was represented by attorney Isaac Phillip Rabicoff of Rabicoff Law LLC. Luby’s Restaurant Corporation was represented by attorney Brandon W. Duke of Winston & Strawn, LLP. The case was presided over by Judge Rodney Gilstrap in the Eastern District of Texas.
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