SynchroFi LLC v. PayPal: Single-Use Password Suit Dismissed With Prejudice in 49 Days
SynchroFi LLC asserted US7613919B2 — a single-use password authentication patent — against PayPal in the Western District of Texas. The case ended in a voluntary dismissal with prejudice just 49 days after filing, before PayPal had served an answer, permanently extinguishing SynchroFi’s claims on the merits.
SynchroFi’s Authentication Patent Claim Against PayPal Ends Abruptly
On October 21, 2025, SynchroFi LLC filed a patent infringement action against PayPal, Inc. in the U.S. District Court for the Western District of Texas, Case No. 7:25-cv-00477. The suit centred on US7613919B2, a patent covering single-use password authentication — a technology directly relevant to secure online payment flows. Rabicoff Law LLC represented SynchroFi, while PayPal retained Greenberg Traurig LLP.
On December 8, 2025 — just 49 days after filing — SynchroFi filed a Notice of Voluntary Dismissal With Prejudice pursuant to FRCP 41(a)(1)(A)(i). Because PayPal had not yet served an answer or a motion for summary judgment, the dismissal was self-effectuating and required no court order to take effect. The court’s December 9 order confirmed the closure and directed each party to bear its own costs, expenses, and attorney fees. Dismissal with prejudice permanently bars SynchroFi from re-asserting the same claims against PayPal.
The 49-day duration and pre-answer timing are notable: the case concluded before any substantive litigation activity became public, suggesting the parties may have reached a private resolution or that SynchroFi elected to withdraw upon assessing early risk signals. The with-prejudice designation, rather than without prejudice, is significant — it forecloses any future refiling of these specific claims against PayPal. The public record does not reveal whether a confidential settlement was reached or what prompted the withdrawal.
Filing to Dismissed with Prejudice in 49 days
49 days — resolved before defendant filed any responsive pleading
Dismissed with prejudice: what the Rule 41 termination means for both parties
Rule 41(a)(1)(A)(i): self-effectuating voluntary dismissal
FRCP 41(a)(1)(A)(i) allows a plaintiff to dismiss an action without a court order by filing a notice before the defendant serves an answer or motion for summary judgment. Because PayPal had not yet responded, SynchroFi’s notice was legally self-effectuating — the case terminated automatically upon filing, with no judicial action required. The court’s order served only to confirm and close the docket.
FRCP 41(a)(1)(A)(i) appliesWith prejudice means SynchroFi cannot refile against PayPal
A dismissal with prejudice operates as a final adjudication on the merits, permanently barring the plaintiff from bringing the same claims against the same defendant. This is materially different from a without-prejudice dismissal, which preserves the right to refile. SynchroFi’s election to dismiss with prejudice — rather than preserving optionality — is an unusual step that typically signals either a settlement, a licensing agreement, or a strategic concession regarding claim viability.
Claims permanently extinguishedPayPal exits without a merits ruling — and without a costs award
PayPal secured closure of the case before filing any responsive pleading, avoiding the expense of full litigation. However, the court ordered each party to bear its own costs and fees, meaning PayPal received no fee award despite the early termination. The absence of a merits ruling means the validity and enforceability of US7613919B2 remain formally undetermined — PayPal did not obtain a finding of non-infringement or invalidity.
No costs awarded to defendantUS7613919B2 remains valid and potentially enforceable against others
Because the case ended on procedural grounds — not on the merits — US7613919B2 was never adjudicated invalid or not infringed. SynchroFi retains the patent and may pursue infringement claims against other companies in the digital payments and authentication space. Competitors to PayPal operating single-use password or one-time passcode authentication systems should assess their exposure to this patent.
Patent survives, other parties at riskFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | SynchroFi LLC | Company | Authentication technology licensor — holder of US7613919B2Search in Eureka ↗ |
| Defendant | Paypal, Inc. | Company | PayPal, Inc. — global digital payments platform and fintech leaderSearch in Eureka ↗ |
| Plaintiff counsel | Isaac Rabicoff | Attorney | Counsel for SynchroFi LLCSearch in Eureka ↗ |
| Plaintiff law firm | Rabicoff Law LLC | Law Firm | Representing SynchroFi LLCSearch in Eureka ↗ |
| Defendant counsel | Scott Joseph Bornstein | Attorney | Counsel for Paypal, Inc.Search in Eureka ↗ |
| Defendant law firm | Greenberg Traurig LLP | Law Firm | Representing Paypal, Inc.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Texas Western District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s order confirms the dismissal was self-effectuating under FRCP 41(a)(1)(A)(i) — no judicial merits determination was made. The with-prejudice designation is the legally operative element: it converts a unilateral procedural act into a permanent bar on SynchroFi re-asserting these claims against PayPal. The cost-bearing provision — each party its own — suggests the court exercised no discretion to award fees, consistent with an early-stage exit before any bad-faith or frivolity finding could attach.
US7613919B2 — Single-Use Password Authentication Technology
US7613919B2 (application no. US10/963,334) covers single-use password authentication — a mechanism that generates a one-time credential for authenticating a user during a digital session or transaction. This technology underpins a broad range of secure login and payment verification flows, including one-time passcodes (OTPs) delivered via SMS, email, or authenticator apps. The patent’s scope in the context of digital payments is commercially significant given the ubiquity of step-up authentication in modern fintech infrastructure.
For digital payments companies, authentication patent risk is non-trivial. Single-use password systems are embedded across checkout flows, account recovery, and fraud prevention pipelines. US7613919B2 has now been asserted against one of the world’s largest payments processors, signalling that SynchroFi views its claims as commercially viable. Any company in the payments, banking, or identity verification space that deploys OTP or one-time credential systems should treat this patent as a monitoring priority — particularly given that no invalidity finding has been made.
Should you run an FTO analysis against US7613919B2?
If your product or platform uses single-use passwords, one-time passcodes, or any credential that expires after a single authentication event, US7613919B2 is directly relevant to your FTO position. This applies to payments processors, digital banking platforms, identity-as-a-service providers, and enterprise authentication vendors. The patent’s assertion against PayPal — and the resulting dismissal with prejudice rather than invalidity — means the patent retains full legal force.
PatSnap Eureka’s FTO Search Agent can map the claim scope of US7613919B2 against your product architecture, identify prior art that could support an IPR petition, and surface related patents in SynchroFi’s portfolio that may present additional risk vectors. Run a targeted FTO before this patent appears in a demand letter addressed to your organisation.
Run a freedom-to-operate analysis on US7613919B2 to assess your product’s exposure
Run FTO in Eureka →Similar Authentication Patent Cases in W.D. Texas and Federal Courts
Cases involving single-use password and OTP authentication patents in W.D. Texas and similar venues, including PAE-driven assertion patterns in the fintech and identity space.
What this case signals for the authentication IP landscape
A pre-answer dismissal with prejudice in a fintech authentication case raises pointed questions about patent enforceability and licensing strategy.
Pre-answer dismissals with prejudice often conceal private resolutions
When a plaintiff voluntarily dismisses with prejudice before the defendant files any responsive pleading, the most common explanation is a confidential settlement or licensing agreement reached outside the public record. The 49-day timeline here is consistent with a negotiated resolution rather than a purely strategic withdrawal. IP teams tracking SynchroFi’s licensing activity should note this pattern.
US7613919B2 remains live — FTO analysis required for payments players
No court has ruled US7613919B2 invalid or not infringed. Any fintech company, payments processor, or authentication provider deploying single-use or one-time password systems should conduct a freedom-to-operate analysis against this patent. The W.D. Texas venue and Rabicoff Law’s involvement suggest a litigation-forward licensing posture that may extend to additional defendants.
SynchroFi v Paypal — key questions answered
The case was dismissed with prejudice. SynchroFi filed a Notice of Voluntary Dismissal With Prejudice on December 8, 2025, under FRCP 41(a)(1)(A)(i). This permanently bars SynchroFi from reasserting the same claims against PayPal. The court confirmed closure on December 9, 2025.
SynchroFi asserted US7613919B2 (application no. US10/963,334), a patent covering single-use password authentication technology. The patent is relevant to one-time passcode and single-use credential systems used in digital payments and secure login flows.
The case closed 49 days after filing, before PayPal served any answer or motion for summary judgment. The public record does not disclose the reason. This timeline is consistent with a confidential settlement, licensing agreement, or a plaintiff’s strategic reassessment of claim viability — none of which are confirmed by the available docket.
No. The dismissal was procedural under FRCP 41(a)(1)(A)(i) and involved no merits adjudication. No court has ruled US7613919B2 invalid or found that PayPal — or any other party — does not infringe it. The patent remains in force and enforceable against third parties.
SynchroFi LLC was represented by Isaac Rabicoff of Rabicoff Law LLC. PayPal, Inc. was represented by Scott Joseph Bornstein of Greenberg Traurig LLP. The case was filed in the U.S. District Court for the Western District of Texas as Case No. 7:25-cv-00477.
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