DigitalDoors v. Independent Bank Group: Four-Patent Cybersecurity Suit Ends in Dismissal
DigitalDoors, Inc. brought a patent infringement action against Independent Bank Group in the Eastern District of Texas, asserting four patents covering secure digital information infrastructure and granular data stores. The case closed after 449 days via a stipulated motion to dismiss, with plaintiff’s claims dismissed with prejudice and defendant’s counterclaims dismissed without prejudice as moot.
A multi-patent cybersecurity assertion against a regional bank ends quietly
On September 25, 2024, DigitalDoors, Inc. filed suit against Independent Bank Group, Inc. d/b/a Independent Bank in the Eastern District of Texas (Case No. 2:24-cv-00783), asserting infringement of four U.S. patents: US10250639B2, US10182073B2, US9734169B2, and US9015301B2. The asserted patents relate to secure digital information infrastructure, granular data stores, content analysis and classification, and information infrastructure management tools — technology directly relevant to financial institutions’ data handling systems.
The case concluded on December 18, 2025, when the court granted the parties’ stipulated motion to dismiss. Plaintiff’s claims were dismissed with prejudice — meaning DigitalDoors cannot reassert the same claims against Independent Bank Group in a future action. Defendant’s counterclaims were dismissed without prejudice as moot, preserving Independent Bank Group’s ability to revive those arguments if circumstances change, though the underlying dispute has effectively concluded.
The 449-day duration, while not atypical for E.D. Texas patent cases, is notable given the case resolved before any reported claim construction or merits ruling. The stipulated nature of the dismissal suggests the parties likely reached a private resolution — potentially a license, covenant not to sue, or commercial settlement — though the public record is silent on specific terms. The with-prejudice designation on plaintiff’s claims is the most commercially significant detail: it forecloses re-filing on these patents against this defendant.
Filing to Case Dismissed in 449 days
449 days — above the E.D. Texas median for stipulated patent dismissals
Dismissed with prejudice: what the stipulated order means for both parties
Stipulated dismissal with prejudice — a permanent bar on re-filing
A dismissal with prejudice under Rule 41 operates as a final adjudication on the merits for res judicata purposes. By stipulating to this outcome, DigitalDoors agreed it cannot re-assert the same patent claims against Independent Bank Group in any future proceeding. The joint nature of the motion — agreed by both parties — distinguishes this from a court-imposed dismissal and strongly suggests a negotiated resolution outside the public record.
Rule 41 — permanent barPlaintiff’s claims: with prejudice. Defendant’s counterclaims: without prejudice.
The asymmetric dismissal structure is legally significant. Plaintiff DigitalDoors’ infringement claims are extinguished permanently against this defendant. Independent Bank Group’s counterclaims — which may have included invalidity or non-infringement defenses — were dismissed without prejudice as moot, meaning they were not adjudicated on their merits. This preserves the defendant’s theoretical right to revive those arguments in a different context, though in practice the dispute appears resolved.
Asymmetric dismissal structureDigitalDoors exits with prejudice — future enforcement against this defendant is closed
For DigitalDoors, the with-prejudice dismissal represents a permanent concession of its infringement claims against Independent Bank Group. Whether this reflects a licensing arrangement, a commercial settlement, or a strategic withdrawal is not determinable from the public record. What is clear is that the four asserted patents remain valid and potentially enforceable against other defendants — the dismissal is defendant-specific, not a patent-wide invalidation.
Claims extinguished — patents surviveFinancial sector data infrastructure patents remain live enforcement risk
This case is consistent with a broader pattern of cybersecurity and data infrastructure patents being asserted against financial institutions in E.D. Texas. The resolution — without any public claim construction ruling — leaves the scope of the asserted patents unlitigated. Other regional banks and fintech operators using similar secure storage, content classification, or granular data store architectures should treat these patents as active enforcement risk until validity or claim scope is adjudicated publicly.
Ongoing risk for financial sectorFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | DIGITALDOORS, INC. | Company | Cybersecurity patent assertion entity — holder of US10250639B2 and three related secure infrastructure patentsSearch in Eureka ↗ |
| Defendant | Independent Bank Group, Inc. d/b/a Independent Bank | Company | Regional U.S. bank holding company operating as Independent Bank across multiple statesSearch in Eureka ↗ |
| Plaintiff counsel | Michael Scott Fuller | Attorney | Counsel for DIGITALDOORS, INC.Search in Eureka ↗ |
| Plaintiff law firm | Garteiser Honea PLLC | Law Firm | Representing DIGITALDOORS, INC.Search in Eureka ↗ |
| Defendant counsel | Barry Bumgardner | Attorney | Counsel for Independent Bank Group, Inc. d/b/a Independent BankSearch in Eureka ↗ |
| Defendant counsel | Elizabeth L. DeRieux | Attorney | Counsel for Independent Bank Group, Inc. d/b/a Independent BankSearch in Eureka ↗ |
| Defendant counsel | Eric Charles Wood | Attorney | Counsel for Independent Bank Group, Inc. d/b/a Independent BankSearch in Eureka ↗ |
| Defendant counsel | Julie Giardina | Attorney | Counsel for Independent Bank Group, Inc. d/b/a Independent BankSearch in Eureka ↗ |
| Defendant counsel | Paige S. Stradley | Attorney | Counsel for Independent Bank Group, Inc. d/b/a Independent BankSearch in Eureka ↗ |
| Defendant counsel | Preston H. Heard | Attorney | Counsel for Independent Bank Group, Inc. d/b/a Independent BankSearch in Eureka ↗ |
| Defendant counsel | Zachary Wade Hilton | Attorney | Counsel for Independent Bank Group, Inc. d/b/a Independent BankSearch in Eureka ↗ |
| Defendant law firm | Barry Bumgardner Law PLLC | Law Firm | Representing Independent Bank Group, Inc. d/b/a Independent BankSearch in Eureka ↗ |
| Defendant law firm | Brown Fox PLLC | Law Firm | Representing Independent Bank Group, Inc. d/b/a Independent BankSearch in Eureka ↗ |
| Defendant law firm | Brown Fox, PLLC | Law Firm | Representing Independent Bank Group, Inc. d/b/a Independent BankSearch in Eureka ↗ |
| Defendant law firm | Capshaw DeRieux LLP | Law Firm | Representing Independent Bank Group, Inc. d/b/a Independent BankSearch in Eureka ↗ |
| Defendant law firm | Merchant & Gould PC (Minneapolis) | Law Firm | Representing Independent Bank Group, Inc. d/b/a Independent BankSearch in Eureka ↗ |
| Defendant law firm | Womble Bond Dickinson (US) LLP | Law Firm | Representing Independent Bank Group, Inc. d/b/a Independent BankSearch in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Texas Eastern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s order precisely tracks the stipulated motion’s asymmetric structure: plaintiff’s claims dismissed with prejudice, defendant’s counterclaims dismissed without prejudice as moot. The ‘as moot’ designation on the counterclaims is legally notable — it signals the court made no merits determination on validity or infringement. For DigitalDoors, the with-prejudice language is a binding concession specific to this defendant. For Independent Bank Group, the without-prejudice counterclaim dismissal preserves theoretical future options but provides no precedential invalidity finding that third parties could rely upon.
US10250639B2 — Secure digital information infrastructure with granular data stores
The four asserted patents — US10250639B2, US10182073B2, US9734169B2, and US9015301B2 — form a family spanning application dates from 2007 (US11/746440, earliest priority) through 2015 (US14/597345). The family covers digital information infrastructure engineered for security-designated data handling, including granular data stores, content extraction, classification, and secure storage methodologies. The progression from US9015301B2 to US10250639B2 suggests a continuation strategy designed to capture evolving implementations of these core architectural concepts.
For financial institutions, these patents are strategically significant because their claimed architectures — secure storage, content analysis, classification, and infrastructure management tools — map directly onto document management systems, customer data platforms, and regulatory compliance infrastructure commonly deployed across banking operations. The patents’ breadth across multiple continuation filings increases the likelihood that at least one claim reads on standard enterprise data classification or secure vault implementations, making freedom-to-operate analysis critical for any bank or fintech operating similar systems.
Should your organisation run an FTO against US10250639B2 and its family?
Any financial institution, fintech, or enterprise software vendor deploying secure document storage, content classification pipelines, granular access-controlled data stores, or information infrastructure management tools should treat this patent family as a live FTO priority. The family’s multi-continuation structure means claim scope varies across the four patents — a clean FTO on one patent does not automatically clear the others. The absence of any public claim construction order from this case means scope uncertainty persists.
PatSnap Eureka’s FTO Search Agent allows R&D and IP teams to map product architectures against the full claim set of US10250639B2, US10182073B2, US9734169B2, and US9015301B2 simultaneously, flagging overlap risks and identifying prior art that could support invalidity arguments. Given DigitalDoors’ demonstrated willingness to litigate in E.D. Texas against financial sector defendants, proactive FTO and monitoring of related continuation applications is a commercially prudent step before any new infrastructure deployment.
Run a freedom-to-operate analysis on US10250639B2 to assess your product’s exposure
Run FTO in Eureka →Similar cybersecurity patent assertions against financial institutions in E.D. Texas
Cases involving secure data infrastructure and digital classification patents asserted against U.S. banks in the Eastern District of Texas follow patterns worth tracking for enforcement risk assessment.
What this case signals for the financial-sector cybersecurity IP landscape
Four data-infrastructure patents asserted against a regional bank — and resolved privately — points to a repeatable enforcement playbook.
E.D. Texas remains the venue of choice for PAE-style cybersecurity assertions
DigitalDoors filed in the Eastern District of Texas — a jurisdiction consistently favored by patent assertion entities targeting financial services firms. The court’s patent-favorable procedural history and predictable docket make it attractive for pre-trial resolution strategies. Banks and fintechs should monitor new filings in this district as early-warning signals.
With-prejudice dismissal protects Independent Bank — but only Independent Bank
The stipulated dismissal with prejudice insulates Independent Bank Group from re-assertion of these four patents. However, DigitalDoors retains enforcement rights against all other market participants. Financial institutions with similar data infrastructure, content classification, or secure storage architectures should assess their exposure to US10250639B2 and its related patents independently.
DIGITALDOORS v Independent — key questions answered
DigitalDoors asserted four U.S. patents: US10250639B2, US10182073B2, US9734169B2, and US9015301B2. All relate to secure digital information infrastructure, including granular data stores, content extraction, classification, and information infrastructure management tools. The application dates span 2007 to 2015, suggesting a continuation family strategy.
A dismissal with prejudice operates as a final judgment on the merits for res judicata purposes. It permanently bars DigitalDoors from re-asserting the same patent claims against Independent Bank Group in any future lawsuit. The patents themselves remain valid and enforceable against other defendants — the bar is defendant-specific, not patent-wide.
The court dismissed the defendant’s counterclaims — likely invalidity and non-infringement defenses — without prejudice as moot because the underlying dispute was resolved by the stipulated dismissal. ‘As moot’ signals no merits adjudication occurred. This means there is no public invalidity finding on the asserted patents that third parties could rely on in future proceedings.
The public record is silent on specific settlement terms. However, the joint and stipulated nature of the dismissal — agreed by both parties — is consistent with a private resolution such as a license, covenant not to sue, or commercial settlement. The with-prejudice designation on plaintiff’s claims is the clearest public signal of a negotiated outcome rather than a unilateral withdrawal.
Yes. The dismissal with prejudice applies only to Independent Bank Group. DigitalDoors retains full enforcement rights against all other market participants. Financial institutions operating secure data storage, content classification, or granular data infrastructure should conduct an FTO analysis against US10250639B2 and its related family members, particularly given DigitalDoors’ demonstrated use of the E.D. Texas venue and the absence of any public claim construction ruling limiting patent scope.
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