Ameranth v. DoorDash: Infringement Suit Dismissed With Prejudice in 283 Days
Ameranth, Inc. asserted US11276130B2 against DoorDash’s food-delivery platform — targeting the Iguazo and Flywheel system architectures. The Delaware District Court granted DoorDash’s Rule 12(b)(6) motion to dismiss, terminating the case with prejudice before discovery could begin. The case closed in under ten months.
Rule 12(b)(6) Dismissal Ends Ameranth’s Claim Against DoorDash Platform
Ameranth, Inc. filed suit against DoorDash, Inc. on 14 February 2025 in the United States District Court for the District of Delaware, asserting infringement of US11276130B2. The complaint specifically targeted the DoorDash system as illustrated in the Iguazo framework/architecture diagram and Flywheel diagram — internal system design documents that Ameranth relied upon to identify the accused instrumentalities.
DoorDash moved to dismiss under Federal Rule of Civil Procedure 12(b)(6), arguing that Ameranth’s complaint failed to state a claim upon which relief could be granted. Judge John Campbell Barker granted the motion in full. The case was dismissed with prejudice on 24 November 2025, meaning Ameranth is barred from reasserting the same patent claims against DoorDash on the same factual basis in federal court. All pending motions were denied as moot.
Resolution in 283 days — entirely on the pleadings — is consistent with a complaint that failed threshold sufficiency standards, possibly on subject-matter eligibility (35 U.S.C. § 101) or insufficiency of infringement allegations. The public record does not reveal the specific legal deficiency identified by the court. Ameranth has a documented history of patent enforcement in the hospitality and food-ordering technology space, making this dismissal with prejudice a commercially significant setback for its licensing programme.
Filing to Dismissed with Prejudice in 283 days
283 days — resolved pre-discovery, faster than most district court patent suits
Dismissed with prejudice: what the Rule 12(b)(6) ruling means for both parties
Rule 12(b)(6): complaint failed before discovery
A Rule 12(b)(6) dismissal means the court found Ameranth’s complaint — taken on its own terms — legally insufficient to state a cognisable infringement claim. No fact discovery occurred. This is a high bar for defendants to clear, and success at this stage typically signals a fundamental deficiency in claim construction, patent eligibility, or the factual allegations of infringement in the pleading itself.
Pre-discovery dismissalDismissal with prejudice bars Ameranth from refiling
Because the dismissal is with prejudice, Ameranth cannot bring the same US11276130B2 claims against DoorDash on the same facts in federal court. This forecloses any leverage the patent previously created for licensing negotiations with DoorDash. Ameranth retains the patent and may pursue other defendants, but this specific enforcement action has permanently ended without any recovery.
No recovery — claim extinguishedDoorDash secures full dismissal without costly discovery
DoorDash avoided the expense and exposure of full patent litigation by prevailing at the pleading stage. The with-prejudice dismissal provides DoorDash with a permanent shield against Ameranth reasserting this specific patent on these facts. Greenberg Traurig’s five-attorney defence team achieved the most efficient possible outcome — ending the case before claim construction or any substantive patent analysis.
Full defence winPleading-stage defeats weaken PAE enforcement leverage
A with-prejudice Rule 12(b)(6) dismissal against a technology platform like DoorDash sends a signal to the market: complaints targeting complex system architectures through reference to internal diagrams alone may not survive threshold scrutiny. For food-tech and delivery-platform operators facing similar assertions from patent enforcement entities, this outcome suggests early motion practice is a viable and cost-effective defence strategy.
Signal for food-tech defendantsFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Ameranth, Inc. | Company | Patent licensing entity — holder of US11276130B2 covering food-service platform technologySearch in Eureka ↗ |
| Defendant | DoorDash, Inc. | Company | DoorDash, Inc. — leading U.S. on-demand food delivery and logistics platformSearch in Eureka ↗ |
| Plaintiff counsel | Richard Charles Weinblatt | Attorney | Counsel for Ameranth, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Shekhar Vyas | Attorney | Counsel for Ameranth, Inc.Search in Eureka ↗ |
| Plaintiff law firm | Stamoulis & Weinblatt LLC | Law Firm | Representing Ameranth, Inc.Search in Eureka ↗ |
| Defendant counsel | Benjamin J. Schladweiler | Attorney | Counsel for DoorDash, Inc.Search in Eureka ↗ |
| Defendant counsel | Joshua L. Raskin | Attorney | Counsel for DoorDash, Inc.Search in Eureka ↗ |
| Defendant counsel | Omar A. Nesheiwat | Attorney | Counsel for DoorDash, Inc.Search in Eureka ↗ |
| Defendant counsel | Vimal M. Kapadia | Attorney | Counsel for DoorDash, Inc.Search in Eureka ↗ |
| Defendant counsel | Wen Xue | Attorney | Counsel for DoorDash, Inc.Search in Eureka ↗ |
| Defendant law firm | Greenberg Traurig LLP | Law Firm | Representing DoorDash, Inc.Search in Eureka ↗ |
| Presiding judge | Judge John Campbell Barker | Judge | Delaware District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s order is unambiguous in scope: DoorDash’s Rule 12(b)(6) motion was granted in full, the complaint was dismissed with prejudice, and all pending motions denied as moot. The with-prejudice designation is significant — it reflects a judicial determination that amendment would be futile, not merely that the current pleading was defective. The denial of pending motions as moot confirms no substantive patent analysis (claim construction, infringement, invalidity) was conducted, meaning the dismissal rests entirely on the complaint’s facial sufficiency.
US11276130B2 — Food-Service Platform System Architecture
US11276130B2 (application no. US17/086181) is a granted U.S. patent asserted by Ameranth in this action. The patent falls within Ameranth’s established portfolio covering hospitality and food-ordering technology — a domain in which the company has been an active patent enforcer for over a decade. The application number suggests a relatively recent continuation or divisional filing, positioning it as part of a family designed to capture modern platform-based implementations of Ameranth’s claimed innovations.
Strategically, US11276130B2 was asserted specifically against DoorDash’s Iguazo framework and Flywheel diagram — suggesting Ameranth mapped the patent’s claims to architectural-level system design rather than specific user-facing features. This approach carries risk at the pleading stage, particularly post-Alice, where software and system-architecture patents face heightened § 101 scrutiny. The with-prejudice dismissal suggests the court found the complaint legally deficient without needing to reach the merits of infringement.
Should you run an FTO against US11276130B2?
Any operator or developer building integrated food-ordering, delivery, or hospitality platform systems should assess exposure to US11276130B2 and the broader Ameranth portfolio. While this specific action against DoorDash ended in dismissal, the patent remains in force and Ameranth has historically pursued multiple defendants simultaneously. If your product involves real-time order management, synchronisation across restaurant systems, or platform architecture resembling Iguazo-type frameworks, a targeted FTO is warranted.
PatSnap Eureka’s FTO Search Agent can map US11276130B2’s claim scope against your product architecture, surface related Ameranth family members, and flag prior art that may bear on validity. Given the § 101 risk profile suggested by this dismissal, Eureka can also retrieve PTAB and district court decisions addressing similar hospitality-tech patents — giving your team the full picture before any licensing demand lands.
Run a freedom-to-operate analysis on US11276130B2 to assess your product’s exposure
Run FTO in Eureka →Similar patent infringement cases: food-tech and delivery platform IP in Delaware
Cases involving food-ordering and delivery platform patents in the Delaware District Court, particularly Rule 12(b)(6) dismissals of software system architecture claims.
What this case signals for the food-tech and delivery platform IP landscape
A pre-discovery dismissal with prejudice in a PAE-initiated infringement action carries real strategic weight for platform operators and licensing programmes alike.
Rule 12(b)(6) is an underused first-line defence in patent suits
DoorDash’s success at the pleading stage — before any discovery cost — demonstrates that sufficiency challenges are worth pursuing aggressively when a complaint relies on vague or architecturally over-broad infringement allegations. Platform defendants should evaluate 12(b)(6) potential before engaging in costly claim construction proceedings.
With-prejudice dismissals permanently extinguish licensing leverage
Unlike a without-prejudice dismissal, this outcome removes US11276130B2 as an enforcement tool against DoorDash entirely. For patent holders running multi-defendant licensing campaigns, a single with-prejudice loss can destabilise the broader programme by demonstrating the patent’s vulnerability on the pleadings.
Ameranth v DoorDash — key questions answered
The Delaware District Court granted DoorDash’s Rule 12(b)(6) motion, finding Ameranth’s complaint legally insufficient to state an infringement claim. Dismissal with prejudice indicates the court found amendment would be futile. The specific legal deficiency — whether § 101 eligibility, claim mapping, or pleading insufficiency — is not detailed in the publicly available order excerpt.
The with-prejudice dismissal means Ameranth cannot refile its US11276130B2 claims against DoorDash on the same factual basis in federal court. The patent itself remains valid and enforceable against other parties. However, the dismissal may signal a vulnerability in the patent’s claim scope or eligibility that could affect future enforcement actions.
Ameranth’s complaint targeted the DoorDash system as depicted in the Iguazo framework/architecture diagram and the Flywheel diagram — internal DoorDash system design representations. This architectural-level accusation, rather than specific product features, may have contributed to the complaint’s failure to meet pleading sufficiency standards.
The case resolved in 283 days from filing to closure — under ten months. This is significantly faster than the average district court patent case, which typically takes two to three years through trial. Resolution on a Rule 12(b)(6) motion at the pleading stage, before any discovery, accounts for the abbreviated timeline.
The case was filed in the United States District Court for the District of Delaware and assigned to Judge John Campbell Barker. Delaware is a frequently chosen venue for patent litigation due to its established patent jurisprudence and experienced judiciary.
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