Minotaur Systems v. Blink Charging: EV Charging Patent Claims Dismissed With Prejudice
Minotaur Systems, LLC asserted US8417402B2 — covering vehicle power charging monitoring — against EV charging network operator Blink Charging Co in Maryland federal court. The parties reached a stipulated dismissal with prejudice in just 35 days, ending Minotaur’s infringement claims permanently.
EV Charging Patent Dispute Extinguished in 35 Days by Stipulated Dismissal
On June 17, 2025, Minotaur Systems, LLC filed a patent infringement action against Blink Charging Co in the U.S. District Court for the District of Maryland before Judge Lydia Kay Griggsby. The asserted patent, US8417402B2, relates to monitoring of power charging in vehicles — a foundational function of networked EV charging infrastructure of the type operated by Blink Charging across its commercial charging network.
The case closed on July 22, 2025, just 35 days after filing, via a Rule 41(a)(1)(A)(ii) stipulated dismissal. Critically, the parties agreed to asymmetric treatment: all of Minotaur’s infringement claims were dismissed with prejudice — permanently barring re-filing — while Blink’s counterclaims were dismissed without prejudice, preserving Blink’s right to reassert them. Each side bears its own legal costs.
A 35-day resolution is exceptionally fast for patent litigation, strongly suggesting the parties had pre-filing communications or reached terms quickly after service. The with-prejudice dismissal of plaintiff’s claims is the operative commercial outcome: Minotaur cannot reassert US8417402B2 against Blink for the same conduct. The public record does not disclose whether any licensing arrangement, payment, or covenant not to sue formed part of the resolution.
Filing to Case Dismissed in 35 days
35 days — well below the median 2–3 year district court patent case duration
Stipulated dismissal: what the asymmetric terms mean for each party
Rule 41(a)(1)(A)(ii): Stipulated dismissal by both parties
A Rule 41(a)(1)(A)(ii) dismissal requires a signed stipulation from all parties who have appeared. Unlike a unilateral voluntary dismissal, both sides agreed to these terms. The with-prejudice designation on plaintiff’s claims is a court-enforceable bar — Minotaur cannot refile the same infringement claims against Blink Charging for the same accused conduct under this patent.
Bilateral stipulated dismissalMinotaur’s claims extinguished — no second bite at the apple
Dismissal with prejudice operates as a final adjudication on the merits for claim-preclusion purposes. Minotaur Systems cannot reassert US8417402B2 infringement claims against Blink Charging for the accused EV charging monitoring conduct. Whether Minotaur extracted any commercial value — such as a lump-sum license fee — before agreeing to this outcome is not disclosed in the public record.
Claims permanently barredBlink retains optionality — counterclaims preserved
Blink Charging’s counterclaims were dismissed without prejudice, meaning they survive for potential future assertion. This asymmetry is commercially significant: Blink could, in theory, refile counterclaims — which may include invalidity challenges to US8417402B2 — if circumstances warrant. The preservation of counterclaims without prejudice is a negotiated protection that suggests Blink did not concede any ground.
Counterclaims preservedEV charging IP risk: fast settlements signal licensing pressure tactics
The 35-day lifecycle is consistent with a demand-letter-to-settlement dynamic common in assertion-entity litigation. For EV charging operators, this case suggests that monitoring and control patents covering networked charging infrastructure are active enforcement targets. Companies deploying or expanding EV charging networks should assess their FTO exposure against vehicle charging communication and monitoring patent families before scaling.
EV sector IP enforcement riskFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Minotaur Systems, LLC | Company | IP licensing entity — holder of US8417402B2 covering EV charging monitoring systemsSearch in Eureka ↗ |
| Defendant | Blink Charging Co | Company | Blink Charging Co — publicly traded EV charging network operator and hardware providerSearch in Eureka ↗ |
| Plaintiff counsel | Joseph J. Zito | Attorney | Counsel for Minotaur Systems, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Dnl Zito Castellano | Law Firm | Representing Minotaur Systems, LLCSearch in Eureka ↗ |
| Defendant counsel | Ryan McKay | Attorney | Counsel for Blink Charging CoSearch in Eureka ↗ |
| Defendant law firm | Fish & Richardsin PC | Law Firm | Representing Blink Charging CoSearch in Eureka ↗ |
| Presiding judge | Judge Lydia Kay Griggsby | Judge | Maryland District CourtSearch in Eureka ↗ |
Official order — verbatim text
The stipulation’s asymmetric structure — plaintiff’s claims dismissed with prejudice, counterclaims dismissed without prejudice — is legally significant. The with-prejudice component triggers claim preclusion: Minotaur Systems is barred from refiling against Blink Charging on the same patent and accused conduct. The without-prejudice carve-out for counterclaims, secured by Fish & Richardson for Blink, preserves Blink’s invalidity and other defenses for future use. The cost-bearing clause (each party its own fees) eliminates any fee-shifting exposure under 35 U.S.C. § 285, suggesting neither party sought an exceptional case finding.
US8417402B2 — Vehicle Power Charging Monitoring Technology
US8417402B2, filed under application number US12/643377, protects methods and systems for monitoring the charging of power in vehicles — a core function of networked EV charging station management. The patent covers communication and status monitoring between a vehicle charging unit and a management system, which is directly relevant to the remote monitoring, session management, and energy metering features found in commercial EVSE networks like those operated by Blink Charging.
As EV adoption accelerates, patents covering charging session monitoring, power delivery control, and vehicle-to-infrastructure communication have become active enforcement assets. US8417402B2 sits at the intersection of automotive electrification and networked infrastructure software — two of the most heavily invested technology sectors. Any company deploying commercial charging hardware or operating a charging network management platform should assess whether their architecture intersects with the claimed monitoring and communication methods.
Should you run an FTO analysis against US8417402B2?
If your organisation manufactures EV charging stations, operates a charging network, or develops EVSE management software with vehicle charging monitoring and session communication features, US8417402B2 is a patent your product team should evaluate. Minotaur Systems has already demonstrated willingness to assert this patent against a major commercial operator. The with-prejudice resolution with Blink does not constrain enforcement against other market participants.
PatSnap Eureka’s FTO Search Agent can map the claims of US8417402B2 against your product’s technical architecture, identify prosecution history estoppel that may limit claim scope, surface related family members and continuation risk, and flag prior art that could support an IPR petition. For EVSE operators scaling their networks, running this analysis before product launch or market expansion is materially lower cost than defending a district court infringement action.
Run a freedom-to-operate analysis on US8417402B2 to assess your product’s exposure
Run FTO in Eureka →Similar EV Charging & Vehicle Monitoring Patent Cases in U.S. District Courts
Explore related patent infringement actions asserting EV charging, vehicle power monitoring, and EVSE network management patents in U.S. district courts.
What this case signals for the EV charging infrastructure IP landscape
A 35-day lifecycle and with-prejudice dismissal in an EV charging patent case carries meaningful signals for network operators, OEMs, and charging hardware makers.
With-prejudice dismissals in 35 days suggest pre-litigation deal structures
Cases that close this quickly — before any substantive court filings — typically reflect pre-filing negotiations or rapid post-service resolution. For IP counsel, this pattern suggests Minotaur Systems may operate a structured licensing program. Monitoring US8417402B2 for further assertion activity against other EV charging operators is warranted.
Asymmetric dismissal terms are a strategic negotiating signal
Blink Charging secured dismissal of its counterclaims without prejudice while conceding nothing on the merits. This structure — plaintiff’s claims gone with prejudice, defendant’s counterclaims preserved — is a meaningful negotiating outcome. It suggests Blink’s counsel (Fish & Richardson) maintained leverage throughout the short proceeding.
Minotaur v Blink — key questions answered
Dismissal with prejudice means Minotaur Systems is permanently barred from refiling patent infringement claims against Blink Charging under US8417402B2 for the same accused conduct. It functions as a final adjudication on the merits for preclusion purposes, even though no court issued a substantive ruling on infringement or validity.
This asymmetric structure was agreed by both parties in the Rule 41 stipulation. It is a negotiated outcome, not a default rule. Blink Charging retains the right to refile its counterclaims — which may include patent invalidity challenges — in future proceedings, while Minotaur’s enforcement avenue against Blink is closed. This asymmetry typically reflects the relative bargaining positions at the time of settlement.
US8417402B2 covers monitoring of power charging in vehicles, including communication between charging units and management systems. This is directly relevant to networked EVSE operators who remotely monitor charging sessions, manage energy delivery, and collect vehicle charging status data — core features of commercial charging network platforms.
Yes. The with-prejudice dismissal in this case only bars Minotaur from reasserting US8417402B2 against Blink Charging for the same accused conduct. Minotaur retains full rights to enforce the patent against other parties. The 35-day resolution and absence of any invalidity ruling means the patent’s validity was never adjudicated in this proceeding.
Under 35 U.S.C. § 285, a court may award attorneys’ fees to the prevailing party in exceptional patent cases. By agreeing that each party bears its own costs and fees, the parties avoided any fee-shifting dispute. Neither side sought — or was exposed to — an exceptional case finding, which is consistent with an early resolution before substantive motions practice.
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