Digital Doors v. First Citizens Bank: Four-Patent Cybersecurity Dispute Dismissed With Prejudice
Digital Doors, Inc. filed suit against First Citizens Bank & Trust Co. in the Eastern District of Texas, asserting four patents covering secure digital information infrastructure and granular data classification. The parties jointly stipulated to dismissal with prejudice after 367 days, with each side bearing its own costs — a resolution that permanently extinguishes all asserted claims between them.
Four Cybersecurity Patents, One Texas Courtroom, One Joint Exit
On November 21, 2023, Digital Doors, Inc. filed this action against First Citizens Bank & Trust Co. in the Eastern District of Texas (Case No. 2:23-cv-00548), asserting infringement of four US patents — US10250639B2, US10182073B2, US9734169B2, and US9015301B2 — covering secure digital information infrastructure, granular data stores, content analysis, classification, and information infrastructure management tools with secure storage capabilities. The case was designated a member case within a larger lead docket (No. 2:23-cv-00541), suggesting Digital Doors pursued a coordinated multi-defendant enforcement campaign.
After 367 days, the parties filed a Stipulated Motion to Voluntarily Dismiss with Prejudice under Fed. R. Civ. P. 41(a)(1), which the Court accepted on November 22, 2024. All claims and causes of action between Digital Doors and First Citizens Bank were dismissed with prejudice, permanently barring Digital Doors from re-asserting the same claims against this defendant. Crucially, the court ordered each party to bear its own costs, expenses, and attorneys’ fees — a mutual walk-away structure that is typical of confidential settlements but leaves no public financial terms on record.
The 367-day duration and the coordinated multi-defendant structure of the lead case suggest that litigation may have proceeded on a parallel track with settlement negotiations across multiple defendants simultaneously. The absence of any fee-shifting award is consistent with a negotiated resolution rather than a litigated outcome. What drove First Citizens Bank to stipulate — whether through a licensing agreement, a covenant not to sue, or a pure walk-away — remains unknown from the public record. The lead case (2:23-cv-00541) was explicitly ordered to remain open, indicating the broader enforcement campaign may be ongoing.
Filing to Voluntary dismissal in 367 days
367 days — slightly above the E.D. Texas median for pre-trial patent dismissals
Dismissed with prejudice: what the stipulated exit means for both parties
Rule 41(a)(1) dismissal with prejudice: the door is permanently closed
A stipulated dismissal with prejudice under Fed. R. Civ. P. 41(a)(1) is a final adjudication on the merits as a matter of law. Digital Doors cannot re-file these same claims against First Citizens Bank in any US federal court. Unlike a dismissal without prejudice — which preserves the right to refile — this resolution is permanent and unconditional as to this defendant.
Permanent bar on re-filingDigital Doors walks away — but the lead case stays open
Digital Doors permanently surrenders its right to pursue infringement claims against First Citizens Bank on all four asserted patents. However, the court explicitly preserved lead case No. 2:23-cv-00541, indicating that Digital Doors’ broader enforcement campaign against other defendants likely continues. This member-case resolution may reflect a defendant-specific settlement or licensing arrangement rather than an abandonment of the portfolio.
Lead case remains activeFirst Citizens Bank secures permanent closure on these four patents
First Citizens Bank & Trust Co. obtains a with-prejudice dismissal, meaning Digital Doors cannot reassert US10250639B2, US10182073B2, US9734169B2, or US9015301B2 against it in future litigation. The mutual cost-bearing arrangement suggests no admission of infringement or validity concession was recorded. The bank engaged three separate law firms — Jones Day, Smith Anderson, and Joe Brown — signalling a robust and well-resourced defence posture.
No infringement admissionUnresolved validity and scope leave the portfolio in play for other defendants
Because the case resolved by stipulation without a claim construction ruling or merits adjudication, the validity and scope of all four Digital Doors patents remain judicially untested. Other defendants named in the lead case or future targets cannot rely on this outcome as prior art estoppel or collateral estoppel. Financial institutions and data infrastructure providers facing similar assertions from this portfolio should treat this dismissal as defendant-specific, not portfolio-clearing.
Portfolio validity unresolvedFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Digital Doors, Inc. | Company | Cybersecurity patent assertion entity — holder of US10250639B2 and three related patentsSearch in Eureka ↗ |
| Defendant | First Citizens Bank & Trust, Co. | Company | First Citizens Bank & Trust Co. — major US commercial bank and financial services providerSearch in Eureka ↗ |
| Plaintiff counsel | Michael Scott Fuller | Attorney | Counsel for Digital Doors, Inc.Search in Eureka ↗ |
| Plaintiff law firm | Garteiser Honea PLLC | Law Firm | Representing Digital Doors, Inc.Search in Eureka ↗ |
| Defendant counsel | David Ortiz | Attorney | Counsel for First Citizens Bank & Trust, Co.Search in Eureka ↗ |
| Defendant counsel | Joseph David Brown | Attorney | Counsel for First Citizens Bank & Trust, Co.Search in Eureka ↗ |
| Defendant counsel | Kelsey I. Nix | Attorney | Counsel for First Citizens Bank & Trust, Co.Search in Eureka ↗ |
| Defendant counsel | Michael W. Mitchell | Attorney | Counsel for First Citizens Bank & Trust, Co.Search in Eureka ↗ |
| Defendant law firm | Joe Brown, Attorney | Law Firm | Representing First Citizens Bank & Trust, Co.Search in Eureka ↗ |
| Defendant law firm | Jones Day – NYC | Law Firm | Representing First Citizens Bank & Trust, Co.Search in Eureka ↗ |
| Defendant law firm | Smith, Anderson, Blount, Dorsett, Mitchell & Jernigan, LLP | Law Firm | Representing First Citizens Bank & Trust, Co.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Texas Eastern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s order accepts and acknowledges the parties’ stipulation, dismissing all claims with prejudice under Rule 41(a)(1) without ruling on any merits question. The explicit instruction to ‘deny as moot’ all pending relief requests confirms no substantive issues were adjudicated. The equal cost-bearing provision is notable: it forecloses any inference that one party prevailed, and is inconsistent with a finding of exceptional case conduct by either side. The order’s preservation of the lead case signals this resolution is defendant-specific, not a portfolio-wide disposition.
US10250639B2 and three related patents — secure data infrastructure and classification
The four asserted patents — US10250639B2 (App. No. 14/597,345), US10182073B2 (App. No. 14/597,314), US9734169B2 (App. No. 13/900,728), and US9015301B2 (App. No. 11/746,440) — form a family spanning over a decade of prosecution history, with the earliest application tracing to App. No. 11/746,440. The patents cover methods and systems for securing digital information infrastructure, including granular data store architecture, content extraction, classification, secure storage, and security-designated data handling. These are foundational claims in the enterprise data security domain.
This patent portfolio sits at the intersection of data governance, cybersecurity infrastructure, and regulated-industry compliance — precisely the technical terrain occupied by large financial institutions managing sensitive customer data. Banks, insurance companies, and fintech platforms deploying content classification, secure storage, or tiered data access architectures face non-trivial overlap risk with this family. The multi-defendant campaign structure and the breadth of the product descriptions suggest Digital Doors views its portfolio as applicable to standard enterprise data infrastructure deployments, not only bespoke implementations.
Should your team run an FTO against US10250639B2 and related Digital Doors patents?
Any organisation deploying secure digital information infrastructure — including content classification engines, granular data store architectures, or security-designated data management tools — should assess exposure to this four-patent family. Financial institutions are the demonstrated primary targets, but the patents’ broad framing of ‘information infrastructure management tools’ with extraction and classification functionality suggests applicability across fintech, healthtech, and enterprise SaaS sectors. The absence of a claim construction ruling means no court has yet narrowed these claims.
PatSnap Eureka’s FTO Search Agent can map your product’s technical architecture against the claim language of US10250639B2, US10182073B2, US9734169B2, and US9015301B2, identifying overlap risk and prior art candidates that could support an invalidity position. Given the ongoing lead case, monitoring new member-case filings in E.D. Texas under docket No. 2:23-cv-00541 is also advisable. Eureka’s litigation monitoring tools surface new filings in real time, giving your legal team the earliest possible warning before a demand letter arrives.
Run a freedom-to-operate analysis on US10250639B2 to assess your product’s exposure
Run FTO in Eureka →Similar cybersecurity patent infringement cases in E.D. Texas
Cases involving secure data infrastructure and classification patents in the Eastern District of Texas, including multi-defendant enforcement campaigns against financial institutions.
What this case signals for the cybersecurity patent enforcement landscape
Multi-defendant assertion campaigns in E.D. Texas against financial institutions are intensifying — this case is one data point in a broader pattern.
Member-case structure signals a coordinated multi-defendant campaign
The explicit preservation of lead case No. 2:23-cv-00541 confirms Digital Doors is pursuing a broader enforcement strategy. Financial institutions and fintech firms operating data infrastructure should audit exposure to US10250639B2 and the three co-asserted patents before receiving a demand letter.
With-prejudice exit without fee-shifting is consistent with a licensing deal
The mutual cost-bearing structure and permanent dismissal, absent any public settlement terms, is a classic fingerprint of a confidential licensing resolution. Defendants in related cases should interpret this as evidence that Digital Doors is willing to settle — and has a template for doing so.
Digital v First — key questions answered
Digital Doors asserted four US patents: US10250639B2, US10182073B2, US9734169B2, and US9015301B2. These patents cover secure digital information infrastructure, granular data stores, content classification, secure storage, and information infrastructure management tools with extraction and security designation capabilities.
The case was dismissed with prejudice pursuant to a stipulated motion under Fed. R. Civ. P. 41(a)(1), accepted by the court on November 22, 2024. A with-prejudice dismissal is a final adjudication on the merits as a matter of law, permanently barring Digital Doors from re-asserting these claims against First Citizens Bank.
The court’s order directed each party to bear its own costs, expenses, and attorneys’ fees. No fee-shifting award was made. This mutual cost-bearing structure is consistent with a negotiated resolution and forecloses any inference of an exceptional case finding under 35 U.S.C. § 285.
Yes. The court’s order explicitly directed the Clerk to close member case No. 2:23-cv-00548 while maintaining lead case No. 2:23-cv-00541 as open. This confirms that Digital Doors’ multi-defendant enforcement campaign in the Eastern District of Texas continues beyond this specific defendant resolution.
The member-case designation indicates Digital Doors filed coordinated suits against multiple defendants under a common lead docket. Other defendants in that lead case cannot rely on the First Citizens Bank dismissal as collateral estoppel or claim preclusion, because no merits ruling was issued. Each defendant’s exposure remains independently governed by the unlitigated claim scope of the four asserted patents.
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