ContactWave LLC v. Walmart, Inc. — Messaging Patent Suit Dismissed With Prejudice
ContactWave LLC brought a patent infringement action against Walmart in the Eastern District of Texas, asserting US9531665B2 covering an information messaging system. The parties filed a joint motion to dismiss, resolving the dispute in just 120 days — with plaintiff’s claims ended permanently via a with-prejudice dismissal.
A swift end in East Texas: messaging patent suit against Walmart closes in four months
On December 2, 2024, ContactWave LLC filed suit against Walmart, Inc. in the Eastern District of Texas (Case No. 2:24-cv-00995), asserting infringement of US9531665B2, a patent directed to an information messaging system. ContactWave was represented by Rabicoff Law LLC and Dnl Zito, firms with an established presence in E.D. Texas patent assertion matters. Walmart retained Findlay Craft PC, a Tyler-based firm frequently engaged by defendants in the same district.
The case closed on April 1, 2025, just 120 days after filing, via a joint motion to dismiss. The court’s order reflects an asymmetric dismissal structure: all claims by ContactWave against Walmart were dismissed with prejudice, permanently barring re-filing of those specific claims, while Walmart’s counterclaims were dismissed without prejudice, leaving Walmart’s counter-assertions available to be re-raised in a future proceeding if circumstances warranted.
The 120-day timeline — from complaint to dismissal — is notably compressed for patent litigation, even in a district known for efficient case management. The joint nature of the motion strongly suggests the parties reached a private resolution, though no settlement terms are disclosed on the public docket. What remains unknown is whether any license, payment, or covenant-not-to-sue was exchanged as part of that resolution.
Filing to Dismissed with Prejudice in 120 days
120 days — resolved well under the E.D. Texas median for patent cases, suggesting early negotiated resolution
Asymmetric dismissal: what the with/without prejudice split means for both parties
With-prejudice dismissal bars ContactWave from refiling these claims
A dismissal with prejudice operates as a final adjudication on the merits for ContactWave’s infringement claims under US9531665B2 against Walmart. ContactWave cannot refile the same claims in any court. This is the stronger form of dismissal from a defendant’s perspective — Walmart obtains finality against this specific assertion. The joint motion structure indicates both parties consented to this outcome.
Claims permanently extinguishedContactWave’s claims end permanently — no second bite at the apple
For ContactWave, dismissal with prejudice means the infringement action against Walmart under US9531665B2 is concluded with no possibility of revival in future litigation. This outcome is consistent with a patent holder who obtained their primary objective — likely a licensing arrangement or commercial resolution — and agreed to foreclose further litigation risk as part of the deal. The patent itself remains valid and enforceable against other parties.
Patent still live vs. other defendantsWalmart’s counterclaims survive — preserved without prejudice
Walmart’s counterclaims — which may have included invalidity or non-infringement assertions — were dismissed without prejudice. This means Walmart did not concede those positions and retains the theoretical ability to revive them. In practice, this preservation is a negotiating safeguard: if ContactWave were to assert related claims again (against Walmart or others), Walmart’s prior counterclaim positions remain on record and available.
Counterclaims preservedUS9531665B2 remains active — exposure for other messaging platform operators
The dismissal resolves only the ContactWave-Walmart dispute. US9531665B2 covering information messaging system technology remains an issued, enforceable patent. Companies operating customer-facing messaging infrastructure, notification platforms, or omnichannel communication systems should assess their exposure. ContactWave’s demonstrated willingness to litigate in E.D. Texas suggests further assertion activity against other targets is possible.
Ongoing FTO risk for sectorFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | ContactWave LLC | Company | Patent assertion entity — holder of US9531665B2, information messaging systemSearch in Eureka ↗ |
| Defendant | Walmart, Inc. | Company | Walmart, Inc. — multinational retail corporation and e-commerce platform operatorSearch in Eureka ↗ |
| Plaintiff counsel | Benjamin Charles Deming | Attorney | Counsel for ContactWave LLCSearch in Eureka ↗ |
| Plaintiff counsel | Isaac Phillip Rabicoff | Attorney | Counsel for ContactWave LLCSearch in Eureka ↗ |
| Plaintiff law firm | Dnl Zito | Law Firm | Representing ContactWave LLCSearch in Eureka ↗ |
| Plaintiff law firm | Rabicoff Law LLC | Law Firm | Representing ContactWave LLCSearch in Eureka ↗ |
| Defendant counsel | Eric Hugh Findlay | Attorney | Counsel for Walmart, Inc.Search in Eureka ↗ |
| Defendant law firm | Findlay Craft PC | Law Firm | Representing Walmart, Inc.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Texas Eastern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s order closely tracks the parties’ joint motion, reflecting an uncontested procedural close rather than a merits ruling. The asymmetric prejudice structure — plaintiff’s claims out with prejudice, defendant’s counterclaims out without prejudice — is a deliberate drafting choice that likely mirrors the commercial terms of an undisclosed resolution. Walmart secured permanent protection against re-assertion by ContactWave on these claims, while preserving its invalidity positions as a hedge.
US9531665B2 — Information Messaging System
US9531665B2 was filed under application number US14/618541 and issued as a granted US utility patent. The patent covers an information messaging system — a technology domain encompassing message routing, delivery management, and communication session handling. Such patents typically protect the architectural logic governing how messages are initiated, addressed, transmitted, and confirmed across digital infrastructure, which has broad applicability across retail, e-commerce, and enterprise communication platforms.
The assertion of this patent against Walmart — one of the largest operators of customer-facing digital commerce and communication infrastructure — signals that the patent holder believes the claims read on widely deployed messaging architectures. For any company operating notification systems, customer messaging platforms, or omnichannel communication stacks, US9531665B2 represents a monitoring priority. The patent’s survival through this litigation (without any invalidity ruling) means its enforceability is unchanged.
Should you run an FTO analysis against US9531665B2?
Any organisation developing or deploying information messaging systems — including customer notification engines, SMS/push platforms, chatbot infrastructure, or order-status communication tools — should assess exposure to US9531665B2. ContactWave’s willingness to sue Walmart in E.D. Texas and obtain a with-prejudice dismissal (consistent with a paid resolution) indicates active enforcement intent. Companies that have not conducted a formal FTO against this patent face a quantifiable and unmitigated litigation risk.
PatSnap Eureka’s FTO Search Agent allows IP and R&D teams to map US9531665B2 claim elements against your product architecture in minutes. Run a claim chart comparison, identify prosecution history disclaimers that narrow scope, and surface relevant prior art that could support an IPR petition — all before a demand letter arrives. Proactive FTO work on actively asserted patents like this one is measurably cheaper than reactive litigation defence.
Run a freedom-to-operate analysis on US9531665B2 to assess your product’s exposure
Run FTO in Eureka →Similar messaging patent cases in E.D. Texas federal courts
Cases involving information messaging system patents asserted in the Eastern District of Texas follow identifiable patterns in filing strategy, resolution speed, and defendant profile.
What this case signals for the messaging technology IP landscape
A fast resolution against a high-profile defendant in E.D. Texas is a signal worth reading carefully for any company running messaging infrastructure.
E.D. Texas remains a preferred venue for messaging patent assertions
ContactWave’s choice of the Eastern District of Texas follows a well-established pattern for NPE-style patent assertions. The district’s efficient docket and plaintiff-friendly procedural history make it attractive. Companies with messaging or notification system products should proactively monitor new filings in this district against comparable defendants.
The asymmetric dismissal structure is a tell: Walmart likely paid to exit
When a plaintiff’s claims are dismissed with prejudice but a defendant’s counterclaims survive without prejudice, it typically reflects a negotiated resolution where the plaintiff accepted value (e.g. a license or lump-sum payment) in exchange for dropping the suit. This pattern recurs frequently in E.D. Texas NPE settlements and suggests ContactWave may pursue similar tactics against other defendants.
ContactWave v Walmart — key questions answered
The case was dismissed with prejudice as to all of ContactWave’s claims against Walmart, and without prejudice as to Walmart’s counterclaims, per a joint motion granted by the Eastern District of Texas on April 1, 2025. The case closed 120 days after filing.
Dismissal with prejudice permanently bars ContactWave from refiling the same infringement claims under US9531665B2 against Walmart. It operates as a final adjudication, meaning the specific dispute is resolved and cannot be reopened. The patent remains enforceable against other parties.
ContactWave asserted US9531665B2, filed under application number US14/618541, covering an information messaging system. This patent relates to digital message routing and delivery architecture, which ContactWave alleged Walmart’s systems infringed.
This asymmetric structure reflects the parties’ negotiated agreement. Walmart’s counterclaims — likely including invalidity or non-infringement defences — were preserved without prejudice, meaning Walmart did not concede those positions. This is consistent with a defendant extracting finality on the plaintiff’s claims while retaining a defensive hedge.
Yes. The dismissal resolved only the dispute between ContactWave and Walmart. No invalidity ruling was issued. US9531665B2 remains an issued, enforceable US patent and can be asserted against other parties. Companies in the messaging and communication technology sector should review their FTO position against this patent.
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