Dialect LLC v. Bank of America Corp.: Five-Patent Voice AI Suit Ends in Full Resolution
Dialect LLC, a voice and natural language processing patent holder, sued Bank of America Corp. in the Eastern District of Texas asserting five patents against the bank’s mobile app on iOS and Android. After 622 days of litigation before Judge Rodney Gilstrap, the parties jointly moved to dismiss all claims and counterclaims with prejudice, representing that the case had been ‘fully resolved.’
Voice AI Patent Assertion Against a Major Bank Ends with Full Resolution
Dialect LLC filed suit against Bank of America Corp. on March 22, 2024 in the Eastern District of Texas (Case No. 2:24-cv-00207), asserting infringement of five U.S. patents — US9495957B2, US9263039B2, US8447607B2, US7640160B2, and US8195468B2 — covering voice recognition, speech processing, and natural language interaction technologies. The accused product was Bank of America’s mobile app available on select iOS and Android devices, suggesting the asserted patents targeted conversational or voice-driven features within the app.
The case concluded on December 4, 2024, when Judge Rodney Gilstrap granted a Joint Motion to Dismiss filed by both parties. In the motion, Dialect and Bank of America represented that they had ‘fully resolved this case,’ and sought dismissal of all of Dialect’s claims and all of Bank of America’s counterclaims and defenses with prejudice. The court ordered each party to bear its own costs, expenses, and attorneys’ fees — a cost allocation that is standard in privately negotiated resolutions.
The case ran 622 days from filing to closure, which is consistent with a dispute that progressed through substantive litigation stages before reaching resolution. The mutual ‘fully resolved’ language in the joint motion strongly suggests a confidential settlement was reached, though the specific financial or licensing terms are not disclosed in the public record. The with-prejudice dismissal means Dialect cannot re-assert these five patents against Bank of America on the same accused products, giving the bank certainty going forward.
Filing to Dismissed with Prejudice in 622 days
622 days — above average for E.D. Tex. patent cases that resolve before trial
Dismissed with prejudice: what the joint resolution means for both parties
Dismissal with prejudice bars re-litigation of these claims
A dismissal with prejudice under Federal Rule of Civil Procedure 41 is a final adjudication on the merits for preclusion purposes. Dialect LLC cannot re-file suit against Bank of America asserting the same five patents against the same accused mobile app. The joint nature of the motion — and the parties’ representation of ‘full resolution’ — is the hallmark of a privately negotiated settlement, though specific terms are not disclosed.
Res judicata appliesDialect surrenders re-litigation rights but likely achieved commercial terms
By agreeing to a with-prejudice dismissal, Dialect LLC permanently closes the door on reasserting these five voice/NLP patents against Bank of America on these accused products. The ‘fully resolved’ language suggests Dialect obtained value — likely a licensing fee or settlement payment — in exchange. Whether Dialect retains freedom to assert these patents against other defendants in future actions is unaffected by this dismissal.
Likely settlement valueBank of America secures finality on all five asserted patents
The with-prejudice dismissal provides Bank of America with enforceable finality: Dialect’s claims on all five patents as applied to the accused mobile app are permanently extinguished. The each-party-bears-own-costs provision is consistent with a negotiated exit rather than a court-imposed outcome. The bank’s large defense team — spanning WilmerHale, Winston & Strawn, and Gillam & Smith — reflects the seriousness with which it treated the assertion.
Permanent claim bar obtainedVoice AI patents remain live enforcement risks for financial app developers
This case signals that voice and NLP patent portfolios like Dialect’s continue to attract enforcement action against major financial institutions whose mobile apps incorporate conversational or speech-driven features. A resolution without public invalidation means the five asserted patents remain presumptively valid. Other banks and fintech companies offering similar mobile voice or chat features should treat Dialect’s portfolio — and comparable NPE portfolios — as an active FTO concern.
Patents remain valid and enforceableFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Dialect, LLC | Company | Voice and NLP patent licensing entity — holder of US9495957B2 and four related speech patentsSearch in Eureka ↗ |
| Defendant | Bank of America Corp. | Company | Bank of America Corp. — major U.S. financial institution, developer of accused iOS/Android mobile appSearch in Eureka ↗ |
| Plaintiff counsel | Charles Everingham, IV | Attorney | Counsel for Dialect, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Claire Abernathy Henry | Attorney | Counsel for Dialect, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Garland T. Stephens | Attorney | Counsel for Dialect, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Garrett C. Parish | Attorney | Counsel for Dialect, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Heng Gong | Attorney | Counsel for Dialect, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Justin Lile Constant | Attorney | Counsel for Dialect, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Kate M Falkenstien | Attorney | Counsel for Dialect, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Richard M. Koehl | Attorney | Counsel for Dialect, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Blue Peak Law Group LLP | Law Firm | Representing Dialect, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Miller Fair Henry PLLC | Law Firm | Representing Dialect, LLCSearch in Eureka ↗ |
| Defendant counsel | Brian Lucas O’Gara | Attorney | Counsel for Bank of America Corp.Search in Eureka ↗ |
| Defendant counsel | Carson Swope | Attorney | Counsel for Bank of America Corp.Search in Eureka ↗ |
| Defendant counsel | Dustin James Edwards | Attorney | Counsel for Bank of America Corp.Search in Eureka ↗ |
| Defendant counsel | Eimeric Reig-Plessis | Attorney | Counsel for Bank of America Corp.Search in Eureka ↗ |
| Defendant counsel | James Bor-Zale | Attorney | Counsel for Bank of America Corp.Search in Eureka ↗ |
| Defendant counsel | James Travis Underwood | Attorney | Counsel for Bank of America Corp.Search in Eureka ↗ |
| Defendant counsel | Jeffrey Soller | Attorney | Counsel for Bank of America Corp.Search in Eureka ↗ |
| Defendant counsel | Jordan L Hirsch | Attorney | Counsel for Bank of America Corp.Search in Eureka ↗ |
| Defendant counsel | Juan C Yaquian | Attorney | Counsel for Bank of America Corp.Search in Eureka ↗ |
| Defendant counsel | Kelly C. Hunsaker | Attorney | Counsel for Bank of America Corp.Search in Eureka ↗ |
| Defendant counsel | Melissa Richards Smith | Attorney | Counsel for Bank of America Corp.Search in Eureka ↗ |
| Defendant counsel | Michael J. Summersgill | Attorney | Counsel for Bank of America Corp.Search in Eureka ↗ |
| Defendant counsel | Natalie M. Morrissey | Attorney | Counsel for Bank of America Corp.Search in Eureka ↗ |
| Defendant counsel | William Mitchell Logan | Attorney | Counsel for Bank of America Corp.Search in Eureka ↗ |
| Defendant law firm | Gillam & Smith LLP | Law Firm | Representing Bank of America Corp.Search in Eureka ↗ |
| Defendant law firm | Wilmer Cutler Pickering Hale & Dorr LLP – Boston | Law Firm | Representing Bank of America Corp.Search in Eureka ↗ |
| Defendant law firm | Wilmer Cutler Pickering Hale & Dorr LLP | Law Firm | Representing Bank of America Corp.Search in Eureka ↗ |
| Defendant law firm | Winston Strawn LLP | Law Firm | Representing Bank of America Corp.Search in Eureka ↗ |
| Defendant law firm | Winston Strawn LLP(Houston) | Law Firm | Representing Bank of America Corp.Search in Eureka ↗ |
| Defendant law firm | Winston Strawn LLP (Redwood City) | Law Firm | Representing Bank of America Corp.Search in Eureka ↗ |
| Defendant law firm | Winston Strawn LLP (Chicago) | Law Firm | Representing Bank of America Corp.Search in Eureka ↗ |
| Presiding judge | Judge Rodney Gilstrap | Judge | Texas Eastern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s order granting the Joint Motion to Dismiss reflects a purely procedural disposition: Judge Gilstrap made no ruling on the merits of infringement or validity. The parties’ own characterisation — ‘fully resolved’ — is the operative phrase, indicating a private agreement underpins the dismissal. The with-prejudice standard permanently extinguishes the specific claims between these parties, but leaves all five asserted patents intact and enforceable against third parties. All pending relief was denied as moot, confirming no outstanding substantive motions survived the resolution.
US9495957B2 — Voice and Natural Language Processing for Mobile Applications
The five asserted patents — US9495957B2, US9263039B2, US8447607B2, US7640160B2, and US8195468B2 — span application filing dates ranging from the mid-2000s through the early 2010s, covering foundational technologies in voice recognition, natural language processing, spoken dialogue systems, and speech-driven user interfaces. These are not narrow design patents; they represent core NLP and speech processing methods that underpin how mobile applications interpret and respond to voice and conversational input.
For the financial services sector, these patents are strategically significant. Mobile banking apps increasingly incorporate voice commands, virtual assistants, and conversational AI features — precisely the functional territory these patents appear to cover. Because the case settled without an invalidity ruling, all five patents remain presumptively valid under 35 U.S.C. § 282. Any fintech, neobank, or mobile banking platform deploying similar voice or NLP-driven features should treat this patent family as a live enforcement risk requiring proactive FTO assessment.
Should you run an FTO analysis against US9495957B2 and Dialect’s NLP portfolio?
If your product team is building or maintaining a mobile banking app, fintech platform, or any financial services application that incorporates voice commands, natural language chat, spoken authentication, or conversational AI features, Dialect’s five-patent portfolio demands attention. None of these patents were invalidated in this proceeding — the case ended in a private resolution, leaving their enforceability fully intact. Financial institutions, payment app developers, and enterprise software vendors in the financial sector are squarely in scope.
PatSnap Eureka’s FTO Search Agent can map your product’s feature set against the claim scope of US9495957B2, US9263039B2, US8447607B2, US7640160B2, and US8195468B2 in one workflow — surfacing claim-level overlap, prior art candidates, and design-around opportunities. Eureka also tracks Dialect LLC’s broader portfolio activity and prosecution history, so your IP team can monitor for new assertions before they become filed complaints.
Run a freedom-to-operate analysis on US9495957B2 to assess your product’s exposure
Run FTO in Eureka →Similar voice AI and NLP patent cases in E.D. Texas and beyond
Explore related voice recognition and NLP patent infringement actions filed in the Eastern District of Texas and other U.S. courts against financial and mobile app defendants.
What this case signals for the voice AI and fintech IP landscape
A major bank resolving a five-patent voice AI assertion in E.D. Texas before trial has clear implications for the broader mobile banking and NLP sector.
E.D. Texas remains the jurisdiction of choice for NPE voice AI assertions
Dialect filed in Judge Gilstrap’s court — the most active patent docket in the country. Financial institutions operating mobile apps with voice or conversational features should anticipate continued NPE activity in this venue and ensure their legal and technical teams are calibrated for E.D. Texas litigation timelines and procedures.
Five-patent bundles amplify settlement leverage against app-based defendants
Asserting five related voice/NLP patents simultaneously raises the cost of invalidity defense substantially. Bank of America deployed counsel from three law firms to respond. Companies in the fintech and mobile banking space should proactively audit their app feature sets against NLP and speech-processing patent families to reduce exposure before litigation is filed.
Dialect v Bank — key questions answered
The case was dismissed with prejudice on December 4, 2024, after the parties filed a Joint Motion to Dismiss representing that they had ‘fully resolved’ the dispute. Judge Gilstrap granted the motion. Each party was ordered to bear its own costs, attorneys’ fees, and expenses. No merits ruling on infringement or validity was issued.
Dialect asserted five U.S. patents: US9495957B2, US9263039B2, US8447607B2, US7640160B2, and US8195468B2. These patents cover voice recognition, natural language processing, and conversational interface technologies. The accused product was Bank of America’s mobile app available on select iOS and Android devices.
No. A dismissal with prejudice based on a private settlement does not adjudicate patent validity. All five patents remain presumptively valid under 35 U.S.C. § 282. Dialect retains the right to assert them against other defendants. Only the claims between Dialect and Bank of America — as applied to the accused app — are permanently extinguished.
The phrase ‘fully resolved’ in the joint motion is the parties’ representation to the court that their dispute has been settled privately. It typically signals that a financial settlement or license agreement was reached, though the specific terms are confidential and not disclosed in the public court record. It does not indicate which party prevailed or what financial terms were agreed.
The Eastern District of Texas, and Judge Rodney Gilstrap’s court in particular, is the most active patent litigation venue in the United States. Patent assertion entities and NPEs frequently file there due to its established patent litigation procedures, experienced bench, and historically plaintiff-friendly reputation. Dialect’s choice of E.D. Tex. is consistent with standard NPE filing strategy for high-value patent assertions.
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