BillSure LLC v. Amazon.com — Infringement Suit Dropped in 15 Days
BillSure LLC filed a patent infringement action against Amazon.com in the Eastern District of Texas, asserting US8005457B2 — a patent covering methods and systems for verifying network resource usage records. The case closed just 15 days after filing when BillSure voluntarily dismissed without prejudice under Rule 41(a)(1)(A)(i), leaving the door open for future re-assertion.
A 15-Day Lifecycle: Strategic Retreat or Pre-Suit Settlement?
On January 8, 2025, BillSure LLC filed a patent infringement complaint against Amazon.com, Inc. in the U.S. District Court for the Eastern District of Texas before Judge Rodney Gilstrap. The asserted patent, US8005457B2 (App. No. 11/219,030), covers a method and system for verifying network resource usage records — technology with clear relevance to cloud billing and metering infrastructure of the kind Amazon operates at scale through AWS.
Fifteen days after filing, BillSure filed a Notice of Voluntary Dismissal Without Prejudice pursuant to Rule 41(a)(1)(A)(i). Judge Gilstrap accepted and acknowledged the notice on January 23, 2025, formally closing the case. Dismissal without prejudice means BillSure has not permanently relinquished its claims — the company retains the right to refile the same action subject to applicable statutes of limitations and any intervening legal developments.
A 15-day lifecycle in E.D. Tex. is exceptionally short and consistent with several scenarios: a pre-suit or rapid post-filing settlement, a demand letter resolution, or a tactical withdrawal ahead of expected venue or jurisdictional challenges. The public record does not disclose any settlement terms, licensing agreement, or Amazon response filing, leaving the true driver of dismissal unknown. Practitioners should monitor BillSure and US8005457B2 for any subsequent refiling activity.
Filing to Voluntary dismissal in 15 days
15 days — significantly below the median for E.D. Tex. patent cases; suggests pre-litigation resolution or tactical retreat
Voluntarily dismissed: what the Rule 41 exit means for both parties
Rule 41(a)(1)(A)(i) — dismissal as of right, no court consent needed
Under Rule 41(a)(1)(A)(i), a plaintiff may voluntarily dismiss an action without a court order at any time before the defendant serves an answer or a motion for summary judgment. BillSure exercised this right before Amazon filed any responsive pleading. Judge Gilstrap’s order ‘accepts and acknowledges’ — rather than grants — the dismissal, confirming it was self-executing and required no judicial discretion.
No merits adjudicationWithout prejudice: the public record does not reveal why
A dismissal ‘with prejudice’ would permanently bar BillSure from re-asserting US8005457B2 against Amazon. A dismissal ‘without prejudice’ preserves that right. The Notice filed by BillSure explicitly specified ‘without prejudice,’ and Judge Gilstrap’s order reflects that designation. The public record is silent on whether a settlement, licensing deal, or other arrangement prompted the withdrawal — only the procedural outcome is confirmed.
Refiling right preservedBillSure retains the right to refile — within limitation periods
As the dismissing party, BillSure walks away with no adverse judgment on the merits of US8005457B2. This preserves future enforcement optionality against Amazon or other potential infringers. However, any refiling must respect the applicable statute of limitations for patent infringement (six years under 35 U.S.C. § 286) and could face ‘two-dismissal rule’ scrutiny if BillSure had previously dismissed the same claim.
Enforcement optionality intactAmazon exits with no liability — but remains exposed to refiling
Amazon obtained no declaratory judgment, no invalidity ruling, and no license on the record. While the immediate litigation risk is eliminated, the without-prejudice nature of the dismissal means Amazon’s products and services remain potentially exposed to re-assertion of US8005457B2. Amazon did not file an answer or counterclaims, so it secured no affirmative IP protections through this proceeding.
No declared non-infringementFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | BillSure LLC | Company | Patent assertion entity — holder of US8005457B2, covering network resource usage verificationSearch in Eureka ↗ |
| Defendant | Amazon.com, Inc. | Company | Amazon.com, Inc. — global e-commerce and cloud computing leader (AWS)Search in Eureka ↗ |
| Plaintiff counsel | Isaac Phillip Rabicoff | Attorney | Counsel for BillSure LLCSearch in Eureka ↗ |
| Plaintiff law firm | Rabicoff Law LLC | Law Firm | Representing BillSure LLCSearch in Eureka ↗ |
| Defendant counsel | Jennifer Librach Nall | Attorney | Counsel for Amazon.com, Inc.Search in Eureka ↗ |
| Defendant law firm | DLA Piper US LLP (Austin, US) | Law Firm | Representing Amazon.com, Inc.Search in Eureka ↗ |
| Presiding judge | Judge Rodney Gilstrap | Judge | Texas Eastern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s order uses the formulation ‘ACCEPTS AND ACKNOWLEDGES’ rather than ‘GRANTS,’ a precise distinction reflecting that Rule 41(a)(1)(A)(i) dismissals are self-executing — they take effect upon filing, not upon judicial approval. The explicit ‘without prejudice’ designation is controlling: BillSure preserves all infringement claims under US8005457B2 against Amazon. The denial of all other pending relief as moot confirms no substantive motions were resolved on the merits before dismissal.
US8005457B2 — Verifying Network Resource Usage Records
US8005457B2, filed under application number 11/219,030, covers a method and system for verifying network resource usage records. The patent addresses the integrity and accuracy of usage data generated by network-connected services — a function foundational to billing reconciliation, fraud detection, and audit compliance in telecommunications and cloud computing environments. Its claim scope likely encompasses automated processes for cross-checking reported usage against independent verification sources.
For cloud infrastructure providers, CDNs, and SaaS billing platforms, this patent’s technical domain sits at the intersection of metering accuracy and financial settlement. Any system that ingests, validates, or reconciles network consumption data — including AWS cost and usage reports, telecom CDRs, or API gateway metering — could fall within the patent’s potential claim scope. The patent’s continued enforceability (no invalidity ruling was issued in this case) means it remains a live instrument for licensing or enforcement activity against the broader cloud and telecom billing sector.
Should your team run an FTO analysis against US8005457B2?
Any company operating cloud billing infrastructure, network usage metering, or automated reconciliation systems should treat US8005457B2 as a flag for FTO review. BillSure’s willingness to file against Amazon — one of the world’s most well-resourced IP defendants — signals confidence in the patent’s breadth. Mid-market cloud providers, telecom operators, and SaaS billing vendors without Amazon’s litigation resources face meaningfully higher settlement pressure if targeted.
PatSnap Eureka’s FTO Search Agent can map the claim language of US8005457B2 against your product architecture, identify prior art that could support an IPR petition, and surface related family members or continuation applications filed by BillSure or related entities. Given the without-prejudice dismissal, proactive clearance now is significantly cheaper than reactive defense after a second filing.
Run a freedom-to-operate analysis on US8005457B2 to assess your product’s exposure
Run FTO in Eureka →Similar Network Usage & Cloud Billing Patent Cases in E.D. Tex.
Cases involving network resource usage verification and cloud billing patents before Judge Gilstrap in the Eastern District of Texas follow recognisable enforcement patterns.
What this case signals for the cloud billing and network IP landscape
A 15-day E.D. Tex. filing against Amazon over network usage verification IP is rarely the full story.
E.D. Tex. remains a favored venue for rapid-fire patent assertions
BillSure’s choice of Judge Gilstrap’s court in the Eastern District of Texas is consistent with plaintiffs seeking favorable procedural terrain. A 15-day turnaround before any answer was filed suggests the litigation may have served a demand-and-resolve function — or that BillSure identified a strategic reason to withdraw quickly, such as a deficiency in pre-filing diligence or a parallel negotiation reaching resolution.
Network usage verification patents carry real risk for cloud infrastructure providers
US8005457B2 targets the verification of network resource usage records — a function central to cloud metering, SaaS billing, and telecom settlement systems. Companies operating at AWS scale process billions of such records. Even a meritless assertion in this domain warrants FTO analysis, as the underlying claim scope may read on automated billing reconciliation workflows commonplace across the cloud industry.
BillSure v Amazon.com — key questions answered
BillSure LLC filed a patent infringement action against Amazon.com in the Eastern District of Texas on January 8, 2025, asserting US8005457B2 covering network resource usage verification. BillSure voluntarily dismissed the case without prejudice on January 23, 2025 — just 15 days after filing — before Amazon filed any responsive pleading. No merits ruling was issued.
Dismissal without prejudice means BillSure has not permanently waived its infringement claims under US8005457B2. The company retains the right to refile the same action against Amazon, subject to the six-year patent infringement statute of limitations under 35 U.S.C. § 286 and the Federal Rule 41 ‘two-dismissal rule,’ which could convert a second voluntary dismissal into a with-prejudice bar.
US8005457B2 covers a method and system for verifying network resource usage records — technology relevant to cloud billing, usage metering, and reconciliation systems. Amazon Web Services processes billions of usage records for billing purposes, making AWS infrastructure a plausible target for claims under this patent. No invalidity finding was made in this case, so the patent remains in force.
The Eastern District of Texas, and particularly Judge Gilstrap’s docket, is one of the most frequently chosen venues by patent assertion entities due to its historically plaintiff-friendly procedural posture, established patent case management practices, and significant patent litigation precedent. BillSure’s selection of E.D. Tex. is consistent with the venue strategies of non-practising entities seeking efficient claim resolution or licensing leverage.
Yes. The without-prejudice dismissal explicitly preserves BillSure’s right to refile. However, a second voluntary dismissal of the same claims against Amazon would operate as a dismissal with prejudice under Rule 41(a)(1)(B). BillSure must also refile within the applicable limitations period. Amazon’s counsel at DLA Piper is well-positioned to monitor for and respond to any refiling.
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