Patent Armory v. California Tortilla Group: Routing Patents Dismissed in 39 Days
Patent Armory, Inc. filed suit in Maryland District Court against California Tortilla Group, Inc. asserting five patents covering intelligent call routing, telephony control, and auction-based entity matching. The case ended in a voluntary dismissal with prejudice just 39 days after filing — before the defendant answered the complaint.
Five-Patent Routing Assertion Collapses Before Defendant Even Responded
On May 20, 2024, Patent Armory, Inc. filed a patent infringement action in the U.S. District Court for Maryland (Case No. 8:24-cv-01469) before Judge Paula Xinis, asserting five U.S. patents — US9456086B1, US10491748B1, US7269253B1, US7023979B1, and US10237420B1 — against California Tortilla Group, Inc. The asserted patents cover intelligent communication routing systems, auction-based entity matching methods, and telephony control with intelligent call routing.
The case closed on June 28, 2024, just 39 days after filing. Plaintiff Patent Armory invoked Federal Rule of Civil Procedure 41(a)(1)(A)(i) to voluntarily dismiss the action with prejudice. Because California Tortilla Group had not yet filed an answer or a motion for summary judgment, the plaintiff was entitled to dismiss unilaterally. The parties agreed that each would bear its own costs, expenses, and attorneys’ fees — no monetary award was entered against either side.
The 39-day resolution is exceptionally short for a multi-patent infringement action and suggests the matter was resolved — or abandoned — almost immediately after service. Whether a private settlement occurred, a licensing agreement was reached, or Patent Armory concluded the case lacked merit after pre-answer communications is not reflected in the public record. The dismissal with prejudice means Patent Armory is permanently barred from re-filing the same claims against California Tortilla Group on these five patents.
Filing to Voluntary dismissal in 39 days
39 days — resolved well below the median district court patent case duration of 2–3 years
Dismissed with prejudice: what the Rule 41 exit means for both parties
Rule 41(a)(1)(A)(i): plaintiff’s unilateral exit before answer
Under FRCP 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. California Tortilla Group had not yet done either. Crucially, Patent Armory chose to dismiss with prejudice — a voluntary election to apply a permanent bar, which is not the default under Rule 41.
With prejudice — permanent barPatent Armory permanently forfeits these claims against this defendant
A dismissal with prejudice operates as a final adjudication on the merits for res judicata purposes. Patent Armory cannot re-assert US9456086B1, US10491748B1, US7269253B1, US7023979B1, or US10237420B1 against California Tortilla Group in any subsequent action. The public record does not disclose whether a settlement, licence, or strategic withdrawal drove this decision.
Permanent claim bar against this defendantCalifornia Tortilla Group exits with full finality and no cost award
California Tortilla Group achieves complete finality: the same plaintiff cannot reassert these five patents in a new action. The agreed cost-bearing arrangement means no attorneys’ fees were awarded, despite the early-stage dismissal. The defendant did not need to incur the cost of answering or mounting a defence, which typically signals the dispute was resolved swiftly after initial service.
Full finality, zero fee exposureRapid pre-answer exits signal pressure-test litigation tactics
Cases dismissed with prejudice this quickly — before any substantive response — often reflect either a rapidly negotiated licence or a plaintiff reassessing claim strength upon defendant engagement. For companies in the food service and hospitality sector using third-party call routing or telephony platforms, this pattern suggests that asserting broad communication-routing patents against end-users carries meaningful early-exit risk when defendants signal readiness to defend.
Pre-answer resolution patternFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Patent Armory, Inc. | Company | Patent licensing entity — holder of US9456086B1 and four further call routing patentsSearch in Eureka ↗ |
| Defendant | California Tortilla Group, Inc. | Company | California Tortilla Group, Inc. — fast-casual restaurant group and alleged infringerSearch in Eureka ↗ |
| Plaintiff counsel | Joseph J. Zito | Attorney | Counsel for Patent Armory, Inc.Search in Eureka ↗ |
| Plaintiff law firm | Dnl Zito Castellano | Law Firm | Representing Patent Armory, Inc.Search in Eureka ↗ |
| Defendant counsel | Peter Christopher Nanov | Attorney | Counsel for California Tortilla Group, Inc.Search in Eureka ↗ |
| Defendant law firm | Vorys Sayer Seymour & Pease LLP | Law Firm | Representing California Tortilla Group, Inc.Search in Eureka ↗ |
| Presiding judge | Judge Paula Xinis | Judge | Maryland District CourtSearch in Eureka ↗ |
Official order — verbatim text
The dismissal notice invokes Rule 41(a)(1)(A)(i) and explicitly elects dismissal with prejudice — language that goes beyond the rule’s default. The stipulation that each party bears its own costs, without any fee-shifting under 35 U.S.C. § 285, confirms no prevailing party determination was sought or granted. The phrasing is precise: finality for this defendant on these patents, with no financial consequence recorded on the public docket. What drove the with-prejudice election remains undisclosed.
US9456086B1 — Intelligent communication routing systems and methods
The five asserted patents — US9456086B1, US10491748B1, US7269253B1, US7023979B1, and US10237420B1 — span technologies covering intelligent communication routing, telephony control systems, and auction-based entity matching. The portfolio includes patents with application dates ranging from legacy telephony filings (US10/385389, US11/387305) through to more recent continuation-style applications (US15/797070, US15/856729), suggesting a family built to extend coverage across evolving call-handling and routing architectures.
This portfolio is commercially significant because intelligent call routing sits at the intersection of customer service infrastructure, VoIP platforms, and cloud-based PBX systems widely deployed across the hospitality and retail sectors. Any business using a third-party call centre, IVR system, or cloud telephony platform that dynamically routes inbound communications could fall within the scope of claims asserted here. The breadth of the portfolio — five patents, three product categories — is consistent with assertion strategies designed to create licensing pressure rather than resolve discrete infringement disputes.
Should you run an FTO analysis against US9456086B1 and this call routing portfolio?
Any organisation deploying intelligent call routing, cloud telephony, or IVR-based customer communication systems — particularly in food service, hospitality, retail, or any sector using third-party contact centre platforms — should treat this patent family as a live FTO concern. Patent Armory’s willingness to assert against an end-user restaurant group demonstrates that direct technology developers are not the only targets: operators of covered systems are equally exposed.
PatSnap Eureka’s FTO Search Agent can map each of these five patent numbers against your current telephony and communication routing stack, identify claims most likely to read on your deployment, and surface prior art for IPR petition assessment. Eureka also tracks the full Patent Armory portfolio, flagging any new assertions or continuation filings in real time — critical intelligence if you operate in a sector where this plaintiff has been active.
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 U.S. District Courts
Other NPE-asserted call routing and intelligent telephony patent cases filed in U.S. district courts, including Maryland, with comparable pre-answer resolution patterns.
What this case signals for the call routing and telephony patent landscape
A five-patent assertion resolved in 39 days raises pointed questions about portfolio enforcement strategy and end-user liability exposure.
End-users of third-party telephony platforms carry real assertion risk
Patent Armory targeted a restaurant group — not a technology vendor — for alleged infringement of call routing and telephony patents. This is consistent with a strategy of asserting upstream technology patents against downstream end-users. Businesses relying on third-party communication routing systems should review vendor indemnification clauses and confirm FTO coverage.
With-prejudice dismissals before answer are rare — and meaningful
Most Rule 41 dismissals at this stage are without prejudice. The election to dismiss with prejudice typically signals a definitive resolution — whether a licensing deal, a covenant not to sue, or a strategic withdrawal. For defendants, securing a with-prejudice dismissal early in litigation is a strong outcome worth pursuing through pre-answer engagement.
Patent v California — key questions answered
The case was dismissed with prejudice. Plaintiff Patent Armory, Inc. filed a voluntary notice of dismissal under FRCP 41(a)(1)(A)(i) on or before June 28, 2024, explicitly electing dismissal with prejudice. This permanently bars Patent Armory from asserting the same five patents against California Tortilla Group in any future action.
Patent Armory asserted five U.S. patents: US9456086B1, US10491748B1, US7269253B1, US7023979B1, and US10237420B1. These patents cover intelligent communication routing systems and methods, telephony control systems with intelligent call routing, and auction-based entity matching methods — technologies associated with call centre, IVR, and cloud telephony deployments.
The public record does not disclose the reason. A 39-day resolution before the defendant answered the complaint is consistent with either a private settlement or licensing agreement, a covenant not to sue, or a plaintiff decision to withdraw after pre-answer communications with the defendant. The with-prejudice election suggests a definitive resolution rather than a simple strategic retreat.
No. The dismissal notice stipulates that each party shall bear its own costs, expenses, and attorneys’ fees. No fee-shifting award under 35 U.S.C. § 285 or otherwise was entered. California Tortilla Group exited the litigation without any monetary obligation recorded on the public docket.
FRCP 41(a)(1)(A)(i) allows a plaintiff to dismiss an action without a court order by filing a notice before the defendant serves an answer or a summary judgment motion. The default under Rule 41 is dismissal without prejudice unless stated otherwise. By electing with prejudice, Patent Armory voluntarily imposed a permanent bar on refiling the same claims against this defendant — an outcome that carries the same preclusive effect as a final judgment on the merits.
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