Fall Line Patents v. Whataburger: Patent Infringement Dismissed With Prejudice
Fall Line Patents, LLC accused Whataburger’s mobile ordering app of infringing US9454748B2, a patent covering location-specific questionnaires executed via remote servers. The Eastern District of Texas closed the case after 217 days on a joint motion to dismiss with prejudice — each party bearing its own fees.
Mobile App Questionnaire Patent Ends in Bilateral Dismissal With Prejudice
On October 13, 2023, Fall Line Patents, LLC filed suit against Whatabrands LLC and Whataburger Restaurants LLC in the Eastern District of Texas (Case No. 5:23-cv-00121) before Judge Robert W. Schroeder III. The complaint alleged infringement of US9454748B2, which covers systems and methods for creating and executing location-specific questionnaires through a combination of a mobile application and remote servers — technology Fall Line contended was embodied in Whataburger’s mobile ordering app.
The case closed on May 17, 2024, via a joint motion to dismiss with prejudice all claims and counterclaims between the parties. The court granted the motion in full. Critically, the dismissal is with prejudice, meaning Fall Line Patents cannot reassert these specific claims against the Whataburger entities in future litigation. Each side bears its own legal costs, which typically signals a negotiated exit rather than a one-sided capitulation.
At 217 days, the resolution is notably swift for patent infringement actions in the Eastern District of Texas. The joint nature of the motion and the mutual cost-bearing arrangement are consistent with a confidential settlement, though the public record is silent on any financial terms. What drove the resolution — whether claim strength, licensing agreement, or commercial pragmatism — remains undisclosed, leaving the patent’s enforceability against other defendants an open strategic question.
Filing to Dismissed with Prejudice in 217 days
217 days — resolved well below the median E.D. Texas patent trial timeline, suggesting early negotiated resolution
Dismissed with prejudice: what the joint motion means for both parties
With-prejudice dismissal bars any re-filing on these claims
A dismissal with prejudice is a final adjudication on the merits for preclusion purposes. Fall Line Patents cannot re-file the same claims under US9454748B2 against the Whataburger entities. The joint motion — agreed by both sides — is the procedural vehicle most commonly used to formalise a settlement or licensing resolution without disclosing financial terms in the public record.
Rule 41(a)(2) joint dismissalFall Line permanently forecloses action against Whataburger
By agreeing to dismiss with prejudice, Fall Line Patents surrenders the right to re-assert US9454748B2 against Whatabrands and Whataburger Restaurants in any future proceeding. This is consistent with a licensing deal that compensates the patent holder while resolving the litigation — though no licence terms appear in the public record. Fall Line retains enforcement rights against unrelated third parties.
Litigation resolved; patent survivesWhataburger secures permanent peace on these patent claims
The with-prejudice dismissal gives Whataburger Restaurants and Whatabrands LLC certainty: Fall Line Patents cannot resurrect this specific action. The mutual cost-bearing clause means Whataburger absorbs its own legal fees, which is typical where parties negotiate on relatively equal footing. The mobile app and server-side questionnaire functionality at issue can continue operating free from this particular patent threat.
No damages, no injunction on recordUS9454748B2 remains active and enforceable against other operators
The settlement-shaped exit does nothing to invalidate or limit US9454748B2. Other QSR and retail brands operating mobile apps with location-triggered survey or questionnaire flows remain exposed. The Eastern District of Texas remains a favoured venue for Fall Line’s litigation strategy. Companies using similar location-specific data-collection mechanics in mobile ordering or feedback systems should assess their exposure against this patent’s claim set.
Patent intact; sector risk remainsFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Fall Line Patents, LLC | Company | Non-practicing entity — holder of US9454748B2, location-specific questionnaire systems patentSearch in Eureka ↗ |
| Defendant | Whatabrands, LLC | Company | Whatabrands LLC and Whataburger Restaurants LLC — U.S. quick-service restaurant chain operating mobile ordering platformSearch in Eureka ↗ |
| Co-Defendant | Whataburger Restaurants, LLC | Company | Search in Eureka ↗ |
| Plaintiff counsel | Larry Dean Thompson , Jr. | Attorney | Counsel for Fall Line Patents, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Matthew J. Antonelli | Attorney | Counsel for Fall Line Patents, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Rehan Mohammed Safiullah | Attorney | Counsel for Fall Line Patents, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Zachariah Harrington | Attorney | Counsel for Fall Line Patents, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Antonelli, Harrington & Thompson, LLP | Law Firm | Representing Fall Line Patents, LLCSearch in Eureka ↗ |
| Defendant counsel | Cole Bass Ramey | Attorney | Counsel for Whatabrands, LLCSearch in Eureka ↗ |
| Defendant counsel | Kristopher L. Reed | Attorney | Counsel for Whatabrands, LLCSearch in Eureka ↗ |
| Defendant counsel | Zoe Phelps Stendara | Attorney | Counsel for Whatabrands, LLCSearch in Eureka ↗ |
| Defendant law firm | Kilpatrick Townsend & Stockton, LLP | Law Firm | Representing Whatabrands, LLCSearch in Eureka ↗ |
| Presiding judge | Judge Robert W. Schroeder, III | Judge | Texas Eastern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s order adopts the parties’ joint motion verbatim, granting dismissal with prejudice of all claims and counterclaims. The phrasing ‘all claims and counterclaims made by Plaintiff and the Whataburger Defendants against each other’ confirms bilateral finality — no claim survives for either party. The absence of any findings on infringement or validity means this order carries no precedential weight on the merits of US9454748B2, leaving the patent’s enforceability unaffected for proceedings against other defendants.
US9454748B2 — Location-Specific Questionnaire Systems and Methods
US9454748B2 (application no. US12/910706) claims systems and methods for creating and executing questionnaires that are specific to a user’s location, with the logic distributed between a mobile client application and a remote server. The patent covers the dynamic generation of location-aware question sets and the collection of responses — a technical architecture directly relevant to mobile ordering, in-app feedback, and personalised customer engagement flows in the restaurant and retail sectors.
For the quick-service restaurant industry, where mobile ordering apps increasingly incorporate location detection to customise menus, prompts, and surveys, US9454748B2 represents a non-trivial enforcement risk. The patent’s server-side execution component means that companies cannot easily design around it by modifying the app alone. Fall Line’s willingness to litigate against a brand of Whataburger’s scale signals that this patent is considered commercially viable for assertion across the broader mobile commerce and hospitality technology landscape.
Should you run an FTO analysis against US9454748B2?
Any development team building or scaling a mobile application that uses a device’s location data to trigger, customise, or execute questionnaires, surveys, feedback forms, or order-customisation flows should assess exposure against US9454748B2. This is particularly relevant for QSR brands, food-delivery platforms, hospitality operators, and retail loyalty apps that route questionnaire logic through a backend server rather than executing it purely on-device.
PatSnap Eureka’s FTO Search Agent can map your product architecture against the independent claims of US9454748B2, identify prior art that could support an invalidity argument, and surface related Fall Line Patents portfolio filings that may present overlapping risk. Running a structured FTO before deployment — or before scaling an existing feature — is significantly more cost-effective than responding to an E.D. Texas complaint.
Run a freedom-to-operate analysis on US9454748B2 to assess your product’s exposure
Run FTO in Eureka →Similar Mobile App Patent Cases in E.D. Texas
Explore related patent infringement actions involving mobile application and location-based technology patents litigated in the Eastern District of Texas.
What this case signals for the mobile app and QSR IP landscape
A swift bilateral exit in E.D. Texas suggests commercial resolution — but the underlying patent remains a live threat for the broader quick-service and mobile commerce sector.
Location-specific mobile questionnaire patents are actively enforced in E.D. Texas
Fall Line Patents’ filing against Whataburger confirms that US9454748B2 is being actively asserted. Any QSR, retail, or hospitality brand deploying a mobile app that triggers location-based surveys, feedback prompts, or order-customisation flows should treat this patent as a live enforcement risk and conduct claim mapping before scaling such features.
Joint dismissal with mutual cost-bearing is the signature of a confidential licence
When both parties move jointly to dismiss with prejudice and each bears its own fees, the pattern is strongly consistent with a confidential licensing or settlement agreement. There is no public record of payment. IP teams monitoring Fall Line should note that Whataburger’s resolution does not set a publicly citable invalidity precedent that could benefit other defendants.
Fall v Whatabrands — key questions answered
US9454748B2 covers systems and methods for creating and executing location-specific questionnaires via a combination of a mobile application and remote server. In Fall Line Patents v. Whataburger, the patent was asserted against Whataburger’s mobile app, which Fall Line alleged used server-side logic to generate and execute location-aware questionnaires to collect user responses.
The case was dismissed with prejudice on a joint motion filed by both parties in May 2024. A with-prejudice dismissal on a joint motion is most commonly associated with a confidential settlement or licensing agreement. No financial terms are disclosed in the public record. Each party was ordered to bear its own attorneys’ fees and costs.
No. The dismissal was procedural and contained no findings on infringement or validity. US9454748B2 remains in force and enforceable. The patent can still be asserted against other companies whose mobile applications use location-specific questionnaire technology, and the Whataburger resolution sets no precedent on the merits.
The court’s order that each party bear its own attorneys’ fees means no fee-shifting was awarded. Neither side received compensation for legal costs from the other. This is typical in jointly negotiated exits and contrasts with an ‘exceptional case’ fee award under 35 U.S.C. § 285, which would require a finding of bad faith or clear invalidity — neither of which was adjudicated here.
Fall Line Patents, LLC is a non-practicing entity — it holds patents but does not appear to manufacture or sell products. The Eastern District of Texas is a frequently used venue for NPE patent assertions, and companies in the mobile commerce, QSR, and hospitality technology sectors should monitor Fall Line’s broader patent portfolio for related filings targeting similar mobile app architectures.
PatSnap Eureka searches patents and litigation data to answer instantly.