Digital Doors, Inc. v. Simmons Bank — Dismissed With Prejudice After 225 Days
Digital Doors, Inc. asserted four patents covering secure digital information infrastructure and granular data storage against Simmons Bank in the Eastern District of Texas. The parties jointly moved to dismiss all claims with prejudice under Rule 41, each bearing its own costs — a resolution pattern that typically signals a confidential settlement was reached.
Four Data-Security Patents, One Banking Defendant, One Joint Exit
On May 2, 2024, Digital Doors, Inc. filed suit against Simmons Bank in the Eastern District of Texas (Case No. 2:24-cv-00319), asserting infringement of four US patents — US10250639B2, US10182073B2, US9734169B2, and US9015301B2 — all directed at digital information infrastructure security, granular data stores, content analysis, and configurable data-flow controls. The asserted patents trace application priority to filings ranging from 2007 (US11/746440) to 2015 (US14/597345), representing a mature portfolio with layered continuation-style coverage.
On December 13, 2024, the court accepted a joint notice of voluntary dismissal with prejudice filed by both parties under Federal Rule of Civil Procedure 41(a)(1)(A)(ii). All claims and causes of action were dismissed with prejudice, and the court ordered each side to bear its own costs, expenses, and attorneys’ fees. Dismissal with prejudice is a permanent resolution — Digital Doors cannot re-file the same claims against Simmons Bank in any court.
The 225-day resolution is notably swift for a four-patent E.D. Texas case, and the ‘each party bears own costs’ structure is consistent with a confidential settlement reached before substantive claim construction proceedings. The public record does not disclose any licensing terms, financial consideration, or whether Simmons Bank agreed to modify any product or practice. The joint nature of the filing suggests the resolution was commercially negotiated rather than contested.
Filing to Voluntary dismissal in 225 days
225 days — faster than median E.D. Tex. patent case resolution of ~2 years
Dismissed with prejudice: what the joint Rule 41 exit means for both parties
Rule 41(a)(1)(A)(ii) dismissal with prejudice — permanent bar on re-filing
A joint stipulation of dismissal with prejudice under Rule 41(a)(1)(A)(ii) requires no court approval beyond acknowledgment — it takes effect upon filing. ‘With prejudice’ means Digital Doors is permanently barred from asserting the same claims against Simmons Bank. This is the strongest form of voluntary dismissal and typically reflects a concluded commercial negotiation rather than a unilateral tactical retreat.
Permanent claim barDigital Doors exits with prejudice — no public recovery on record
Dismissal with prejudice forecloses any future assertion of these four patents against Simmons Bank. The ‘each party bears own costs’ order means Digital Doors recovered no publicly-disclosed attorneys’ fees award. However, the joint filing and rapid timeline are consistent with a confidential licensing arrangement — common in NPE-driven patent cases — meaning undisclosed consideration may have changed hands. The public record is silent on this point.
Confidential terms possibleSimmons Bank avoids merits ruling — exposure from portfolio remains
Simmons Bank obtained a permanent end to this specific litigation without a court ruling on validity or infringement. No invalidity finding was made, meaning the four Digital Doors patents remain in force and enforceable against other defendants. Simmons Bank bears no publicly-disclosed cost liability, but the absence of a merits determination means no precedent was set that could shield the broader banking sector from the same portfolio.
No invalidity findingPortfolio survives — other financial institutions remain exposed
Because the case ended without a validity or infringement ruling, all four Digital Doors patents retain their presumption of validity under 35 U.S.C. § 282. Financial institutions operating digital banking platforms with secure data storage, access controls, or content classification features should assess whether their architectures overlap with the claims of this portfolio. The swift, joint resolution may signal Digital Doors’ willingness to license rather than litigate to judgment.
Portfolio still enforceableFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Digital Doors, Inc. | Company | Data-security patent assertion entity — holder of US10250639B2 and 3 related patentsSearch in Eureka ↗ |
| Defendant | Simmons Bank | Company | Simmons Bank — regional US financial institution operating digital banking infrastructureSearch 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 | Jason Dwain Mazingo | Attorney | Counsel for Simmons BankSearch in Eureka ↗ |
| Defendant counsel | Jay E Heidrick | Attorney | Counsel for Simmons BankSearch in Eureka ↗ |
| Defendant law firm | Polsinelli PC – Kansas City | Law Firm | Representing Simmons BankSearch in Eureka ↗ |
| Defendant law firm | The Mazingo Firm PC | Law Firm | Representing Simmons BankSearch 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 joint stipulation rather than independently ruling on the merits — a standard procedural posture under Rule 41(a)(1)(A)(ii). The explicit ‘with prejudice’ language and the ‘each party bears own costs’ provision are the operative terms. No claim construction, no infringement finding, and no invalidity determination appears in the record. The verdict text’s reference to ‘Member Case’ suggests this action was part of a consolidated multi-defendant proceeding, which may inform how any licensing terms were structured.
US10250639B2 — Secure Digital Information Infrastructure with Granular Data Stores
US10250639B2 (application US14/597345) is the lead patent asserted in this case and covers digital information infrastructure designed to secure designated data using granular data stores — a technology relevant to any platform that partitions sensitive data with role-based or content-driven access controls. The portfolio spans application dates from 2007 to 2015, covering a broad arc of data-security architecture development. The four patents together address extraction, classification, segmentation, and distribution-control mechanisms at the infrastructure level.
For the financial services sector, this portfolio is commercially significant because granular data stores and configurable access controls are foundational components of core banking platforms, digital onboarding systems, and regulatory compliance architectures. A patent family with 2007 priority can assert coverage over implementations that post-date the filing — including cloud-native and API-driven banking services that have since become standard. Any institution operating a multi-tier data access system should treat this portfolio as a live enforcement risk.
Should your platform run an FTO against US10250639B2 and the Digital Doors portfolio?
If your organisation operates digital banking infrastructure, fintech data platforms, or any system involving secure partitioned data storage with classification or distribution controls, this four-patent portfolio warrants an FTO assessment. The case was dismissed without a validity ruling, meaning all claims remain presumptively valid. The 2007 priority date is particularly relevant — legacy and modern systems alike may fall within the scope of claims that were drafted to cover evolving architectures.
PatSnap Eureka’s FTO Search Agent can map the claim language of US10250639B2, US10182073B2, US9734169B2, and US9015301B2 against your product architecture, identify prior art that could support an IPR petition, and flag overlapping claims across the family. Given that this portfolio has now demonstrated a willingness to assert and resolve in E.D. Texas, proactive clearance is materially faster and less costly than reactive litigation response.
Run a freedom-to-operate analysis on US10250639B2 to assess your product’s exposure
Run FTO in Eureka →Similar Data-Security Patent Cases in E.D. Texas Against Financial Institutions
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What this case signals for the fintech and banking-sector IP landscape
A four-patent data-security assertion resolved in under eight months in E.D. Texas offers clear lessons for financial institutions and technology vendors facing similar portfolio risk.
Rapid joint dismissal in E.D. Tex. strongly suggests confidential licensing
When both parties jointly file a Rule 41 dismissal with prejudice before claim construction, and each bears its own costs, the pattern is consistent with a private licensing deal. Financial institutions facing similar assertions should treat early resolution as a commercial lever, not a sign of weakness — particularly against NPE plaintiffs with mature continuation portfolios.
No invalidity finding leaves all four patents enforceable against others
The dismissal created no prior art record, no claim construction order, and no invalidity holding. Digital Doors retains full enforcement rights against any other party. Banks and fintech platforms using granular data stores, content-based access controls, or distributed secure storage should run FTO analyses against US10250639B2, US10182073B2, US9734169B2, and US9015301B2 before this portfolio is asserted elsewhere.
Digital v Simmons — key questions answered
Digital Doors filed a four-patent infringement action against Simmons Bank in the Eastern District of Texas on May 2, 2024. After 225 days, the parties jointly filed a voluntary dismissal with prejudice under Rule 41(a)(1)(A)(ii). The court accepted the dismissal on December 13, 2024, with each party bearing its own costs. No merits ruling was issued.
Digital Doors asserted four US patents: US10250639B2, US10182073B2, US9734169B2, and US9015301B2. The patents cover digital information infrastructure security, granular data stores, content analysis and classification, configurable data-flow filters, and information infrastructure management tools. The portfolio has priority dates ranging from 2007 to 2015.
Not in a merits sense. Dismissal with prejudice means Digital Doors cannot re-assert these specific claims against Simmons Bank, but no court ruled on whether the patents were valid or infringed. Simmons Bank obtained a permanent end to this litigation without an invalidity finding. The patents remain enforceable against all other parties.
The court’s order that each party bear its own costs, expenses, and attorneys’ fees means neither side was awarded litigation costs by the court. This is a neutral cost allocation common in jointly-negotiated dismissals. It does not preclude undisclosed private financial consideration — such as a licensing payment — from having been exchanged between the parties outside of the court order.
Yes. Because the case was dismissed without any court ruling on validity or infringement, all four Digital Doors patents — US10250639B2, US10182073B2, US9734169B2, and US9015301B2 — retain their statutory presumption of validity under 35 U.S.C. § 282 and remain fully enforceable against third parties. Other financial institutions or technology companies in the data-security space should treat this portfolio as an active enforcement risk.
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