ESP v. Monster Mini Golf: VR Headset Patent Suit Dismissed With Prejudice
Electronic Scripting Products, Inc. asserted US9229540B2 — a virtual reality headset patent — against Green Family Entertainment LLC, operator of Monster Mini Golf Bellevue, in the Western District of Washington. The plaintiff voluntarily dismissed the action with prejudice after 172 days, permanently closing the door on this specific claim.
VR patent assertion against entertainment venue ends at plaintiff’s election
Electronic Scripting Products, Inc. (ESP) filed suit on January 10, 2025 in the U.S. District Court for the Western District of Washington against Green Family Entertainment LLC, operating as Monster Mini Golf Bellevue. The complaint alleged infringement of US9229540B2, a patent directed to virtual reality headset technology, which ESP asserted was embodied in VR headsets deployed at the defendant’s entertainment venue. The case was assigned to Judge Lauren King.
On July 1, 2025 — 172 days after filing — ESP filed a notice of voluntary dismissal with prejudice pursuant to F.R.C.P. 41(a)(1)(A)(i). Dismissal with prejudice is a final disposition on the merits: ESP is permanently barred from reasserting the same claims against Green Family Entertainment LLC based on the same patent. The defendant recorded no counsel of record in publicly available filings, suggesting the matter may have resolved bilaterally before any substantive litigation activity.
The 172-day timeline — ending before any docketed motion practice or claim construction — is consistent with an early resolution, though the public record does not confirm whether a settlement was reached or whether ESP simply elected to withdraw. The with-prejudice designation is the legally significant feature: it eliminates refiling risk for this defendant on this patent, which may reflect a licensing agreement, an agreed covenant not to sue, or a strategic retreat. The precise commercial terms, if any, remain undisclosed.
Filing to Voluntary dismissal in 172 days
172 days — resolved before any substantive court ruling
Dismissed with prejudice: what the voluntary withdrawal means for both parties
Rule 41(a)(1)(A)(i): plaintiff’s unilateral right to dismiss
F.R.C.P. 41(a)(1)(A)(i) permits a plaintiff to dismiss an action without a court order before the defendant serves an answer or a motion for summary judgment. ESP invoked this rule with an express ‘with prejudice’ designation — making the dismissal a final adjudication on the merits by agreement of the filing party. No judicial approval was required.
Procedural — no merits rulingWith prejudice forecloses any future claim on the same facts
A dismissal with prejudice is legally equivalent to a judgment against the plaintiff on the dismissed claims. ESP cannot refile this patent infringement action against Green Family Entertainment LLC based on US9229540B2. This is a stronger protection for the defendant than a dismissal without prejudice, which would permit refiling. The public record is silent on whether a financial settlement accompanied this designation.
Defendant: protected from refilingESP retains the patent but surrenders this enforcement action
US9229540B2 remains in force and ESP retains the right to assert it against other parties. The with-prejudice dismissal is specific to Green Family Entertainment LLC. However, a voluntary early withdrawal — before any substantive court ruling — provides ESP with no public record of infringement findings, which limits precedent value in future enforcement campaigns targeting similar VR entertainment deployments.
Patent survives — this claim does notEarly resolution limits litigation risk for VR entertainment operators
The case signals that small-scale entertainment venue operators using commercial VR headset systems may be within the assertion scope of VR hardware patent holders like ESP. The rapid, with-prejudice resolution without public merits adjudication leaves the validity and infringement questions unanswered — a pattern that can complicate FTO assessments for other operators in the immersive entertainment sector.
VR entertainment sector — watch listFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Electronic Scripting Products, Inc. | Company | IP licensing entity — holder of US9229540B2 covering VR headset technologySearch in Eureka ↗ |
| Defendant | Green Family Entertainment LLC | Company | Operator of Monster Mini Golf Bellevue entertainment venue, WashingtonSearch in Eureka ↗ |
| Plaintiff counsel | John A. Lee | Attorney | Counsel for Electronic Scripting Products, Inc.Search in Eureka ↗ |
| Plaintiff law firm | Banie & Ishimoto, LLP | Law Firm | Representing Electronic Scripting Products, Inc.Search in Eureka ↗ |
| Presiding judge | Judge Lauren King | Judge | Washington Western District CourtSearch in Eureka ↗ |
Official order — verbatim text
The dismissal notice invokes F.R.C.P. 41(a)(1)(A)(i) and expressly designates the dismissal as ‘with prejudice.’ This phrasing is legally operative: it converts what would otherwise be a plaintiff’s unilateral withdrawal into a final disposition on the merits, barring ESP from reasserting the same claims against this defendant. No court order was required, and no infringement or validity findings were made. The absence of any docketed defense activity suggests the parties reached resolution before litigation was joined.
US9229540B2 — Virtual Reality Headset System Technology
US9229540B2, filed under application number US13/199239, is directed to virtual reality headset (VR HDM) technology. The patent covers systems and methods within the VR display and interaction space — a domain that spans consumer electronics, location-based entertainment, and enterprise simulation. The application date places its priority in the pre-consumer-VR-boom era, suggesting foundational claim language that may read broadly on subsequent commercial implementations by companies such as Meta, Valve, and Sony, as well as headsets sourced by venue operators.
For the immersive entertainment sector, US9229540B2 represents a commercially actionable asset: ESP has demonstrated willingness to assert it against end-users deploying VR systems in consumer-facing environments. Competitors and adjacent technology companies in the location-based entertainment, VR arcade, and theme park segments face potential exposure if their deployments fall within the claim scope. The patent’s continued validity — unchallenged in this case — means it remains an active enforcement tool in ESP’s portfolio.
Should you run an FTO against US9229540B2?
Any business deploying commercial VR headset systems in a customer-facing environment — including entertainment venues, VR arcades, theme parks, hospitality, or retail experiential spaces — should assess exposure to US9229540B2. This case confirms that ESP is actively enforcing the patent against operators, not only hardware manufacturers. If your supplier agreement does not include IP indemnification covering third-party patent assertions, the risk sits with your organisation.
PatSnap Eureka’s FTO Search Agent can map the claim language of US9229540B2 against your specific hardware configuration and use-case deployment, flagging overlap and identifying design-around options. Eureka also surfaces the full ESP patent family, enabling a portfolio-level clearance rather than a single-patent snapshot — critical when an asserting entity holds continuation or divisional patents that could extend coverage.
Run a freedom-to-operate analysis on US9229540B2 to assess your product’s exposure
Run FTO in Eureka →Similar VR headset patent infringement cases in U.S. district courts
Cases involving virtual reality headset patent assertions in U.S. district courts, including end-user and venue-operator defendants in the immersive entertainment sector.
What this case signals for the VR entertainment IP landscape
ESP’s assertion against a single venue operator hints at a broader enforcement strategy targeting commercial VR deployments in consumer entertainment.
VR headset patents are being asserted against end-users, not just manufacturers
This case targets a venue operator — not a VR hardware maker — for deploying headsets covered by US9229540B2. Entertainment businesses using commercial VR systems should confirm that their hardware suppliers carry IP indemnification clauses and that the products are covered by appropriate patent licenses.
With-prejudice dismissals without public settlement terms are common in early licensing resolution
The absence of any defense counsel on the docket and the sub-six-month timeline are consistent with either a licensing agreement or a covenant not to sue. IP teams tracking ESP’s enforcement activity should log this case as a resolved assertion and monitor for new filings against other VR venue operators.
Electronic v Green — key questions answered
The case was dismissed with prejudice. On July 1, 2025, ESP filed a notice of voluntary dismissal with prejudice under F.R.C.P. 41(a)(1)(A)(i), permanently barring ESP from reasserting the same patent claims against Green Family Entertainment LLC d/b/a Monster Mini Golf Bellevue.
ESP asserted US9229540B2, a patent covering virtual reality headset (VR HDM) technology, filed under application number US13/199239. The complaint alleged that VR headsets deployed at the Monster Mini Golf Bellevue venue infringed this patent.
It means the plaintiff permanently relinquishes the right to refile the same claims against that defendant. Unlike a dismissal without prejudice — which allows refiling — a with-prejudice designation is treated as a final judgment on the merits, giving the defendant full protection from the same action being brought again.
The public record does not confirm a settlement. The voluntary dismissal with prejudice is consistent with a settlement or licensing agreement, but no terms were publicly disclosed. The absence of defense counsel on the docket and the short 172-day duration suggest the matter resolved before substantive litigation activity commenced.
Yes. The dismissal is specific to the claims against Green Family Entertainment LLC and does not affect the patent’s validity or enforceability against other parties. US9229540B2 remains in force and Electronic Scripting Products retains the right to assert it in future actions against other defendants.
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