VDPP LLC v. Revo America Corp.: 3D Spectacles Patents Dismissed With Prejudice
VDPP, LLC asserted two patents covering continuous adjustable 3D filter spectacles against Revo America, Corp. in the Northern District of Texas. The plaintiff voluntarily dismissed all claims with prejudice before the defendant answered — ending enforcement rights on these patents against this defendant in just 54 days.
Pre-answer dismissal with prejudice closes 3D spectacles IP dispute
On June 27, 2025, VDPP, LLC filed a patent infringement action in the U.S. District Court for the Northern District of Texas against Revo America, Corp. The complaint asserted two patents — US9716874B2 and US10021380B1 — covering continuous adjustable 3Deeps filter spectacles for stereoscopic viewing and faster state transitioning using multi-layered variable tint materials. VDPP is represented by William P. Ramey III of Ramey LLP, a firm with an established track record in asserting patents in Texas courts.
On August 19, 2025 — just 54 days after filing — VDPP filed a notice of voluntary dismissal under Federal Rule of Civil Procedure 41(a)(1)(A)(i), which permits unilateral dismissal before a defendant has answered or moved for summary judgment. Critically, VDPP designated the dismissal as with prejudice as to the asserted patents. This means VDPP has permanently surrendered its right to assert US9716874B2 and US10021380B1 against Revo America. Each party was designated to bear its own litigation costs.
The 54-day resolution is notably rapid even for a pre-answer voluntary dismissal and suggests the parties likely reached an informal resolution — whether through a licensing agreement, coexistence arrangement, or commercial negotiation — before any substantive litigation commenced. The public record is silent on any underlying terms. The with-prejudice designation is unusual for a unilateral plaintiff dismissal and may reflect a negotiated concession designed to provide Revo America with finality in exchange for something outside the court record.
Filing to Voluntary dismissal in 54 days
54 days — resolved well before typical district court patent case timelines of 2–3 years
Dismissed with prejudice: what the voluntary dismissal means for both parties
Rule 41(a)(1)(A)(i): plaintiff’s right to dismiss before answer
Federal Rule 41(a)(1)(A)(i) allows a plaintiff to dismiss without court order before the defendant serves an answer or a motion for summary judgment. Unusually here, VDPP elected to make this dismissal with prejudice — a voluntary step beyond what the rule requires. A with-prejudice designation under Rule 41 acts as an adjudication on the merits, permanently barring VDPP from re-filing the same claims against Revo America on these patents.
Rule 41(a)(1)(A)(i)VDPP permanently forfeits claims against Revo America on both patents
By filing with prejudice, VDPP, LLC has relinquished any future infringement claims against Revo America based on US9716874B2 and US10021380B1. This is a significant concession for a plaintiff-licensor. The dismissal does not affect VDPP’s ability to assert these patents against other defendants, but it forecloses this specific enforcement avenue entirely. The decision to accept with-prejudice terms this early suggests VDPP may have obtained value outside the litigation record.
Enforcement rights extinguishedRevo America gains permanent immunity on these two patents
Revo America, Corp. never answered the complaint, yet exits with a with-prejudice dismissal — a stronger outcome than a simple case closure. The company cannot be sued again by VDPP on US9716874B2 or US10021380B1. No costs or fees were awarded against Revo America. The absence of any defendant counsel on the public record and the speed of resolution are consistent with the parties having resolved the matter through direct negotiation rather than adversarial litigation.
Permanent bar on re-filingWith-prejudice terms signal likely off-record resolution in 3D optics sector
For competitors and licensees in the 3D display and adjustable filter spectacles space, this outcome suggests VDPP’s patent portfolio retains licensing leverage — the dismissal is defendant-specific, not patent-wide. Other manufacturers of variable-tint stereoscopic eyewear should note that US9716874B2 and US10021380B1 remain in force and may be asserted in future actions. The with-prejudice choice by VDPP, without court order or public settlement agreement, is consistent with a confidential licensing resolution.
Patents remain enforceable vs. othersFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | VDPP, LLC | Company | 3D display technology licensor — holder of US9716874B2 and US10021380B1Search in Eureka ↗ |
| Defendant | Revo America, Corp. | Company | Revo America, Corp. — consumer optics and eyewear companySearch in Eureka ↗ |
| Plaintiff counsel | William P. Ramey , III | Attorney | Counsel for VDPP, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Ramey LLP | Law Firm | Representing VDPP, LLCSearch in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Texas Northern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The dismissal notice invokes Rule 41(a)(1)(A)(i) and expressly designates the dismissal as with prejudice as to the asserted patents — language that goes beyond the default rule, which would ordinarily result in dismissal without prejudice on a first unilateral filing. The with-prejudice designation functions as a merits adjudication under Ninth and Fifth Circuit precedent, permanently barring re-litigation of the same claims against this defendant. The fee-bearing provision — each party bears its own costs — is consistent with a negotiated exit rather than an adverse ruling.
US9716874B2 & US10021380B1 — Adjustable 3D Filter Spectacles Technology
US9716874B2, filed under application US15/212114, covers continuous adjustable 3Deeps filter spectacles designed for optimized stereoscopic viewing — including a control method, means, and a system for generating and displaying modified video. US10021380B1, filed under US15/907614, addresses a specific performance problem: faster state transitioning in such spectacles using multi-layered variable tint materials. Together the patents protect both the systemic architecture of adaptive 3D eyewear and the material-level innovation enabling rapid lens state changes critical to comfortable stereoscopic viewing.
These patents sit at the intersection of consumer optics, display technology, and computational video processing — a space that is growing as stereoscopic content and augmented/mixed reality headsets proliferate. The variable-tint multi-layer claim construction in US10021380B1 may have relevance beyond traditional 3D cinema glasses, potentially capturing smart eyewear and adaptive lens products. For competitors in the 3D display accessories, VR optics, and electrochromic lens sectors, these patents represent a monitored enforcement risk given VDPP’s demonstrated willingness to litigate in the Northern District of Texas.
Should you run an FTO against US9716874B2 and US10021380B1?
Any company designing, importing, or selling adjustable filter spectacles, variable-tint stereoscopic eyewear, or multi-layered adaptive lens products for 3D or immersive viewing applications should assess freedom to operate against these two patents. The claims cover both the optical hardware architecture and the video signal processing system — meaning both device manufacturers and platform providers may fall within scope depending on how the independent claims are construed.
PatSnap Eureka’s FTO Search Agent can map your product’s technical features against the independent claims of US9716874B2 and US10021380B1, surface relevant prior art that may support design-around strategies, and identify related VDPP portfolio filings. Given VDPP’s pattern of asserting these patents in the Northern District of Texas, an early FTO assessment is more cost-effective than reactive litigation defense.
Run a freedom-to-operate analysis on US9716874B2 to assess your product’s exposure
Run FTO in Eureka →Similar 3D display and adaptive optics patent cases in Texas federal courts
Cases involving 3D spectacles, variable-tint lens, and stereoscopic display patents litigated in the Northern District of Texas and similar venues.
What this case signals for the 3D display and adaptive optics IP landscape
A pre-answer with-prejudice dismissal in 54 days rarely means the dispute simply went away — it typically signals a negotiated outcome.
VDPP’s patent portfolio remains live against other 3D spectacles manufacturers
The with-prejudice dismissal applies only to Revo America. US9716874B2 and US10021380B1 are still valid and enforceable. Any other company producing continuous adjustable filter spectacles or variable-tint stereoscopic eyewear should treat these patents as active enforcement risks and consider an FTO assessment.
Pre-answer dismissals with prejudice often signal confidential licensing activity
Plaintiff-side with-prejudice designations before an answer are structurally unusual — defendants typically extract that concession through negotiation. The 54-day timeline and absence of defendant counsel on record strongly suggest a confidential resolution was reached, possibly including a license, royalty payment, or market-access agreement.
VDPP v Revo — key questions answered
The with-prejudice dismissal means VDPP, LLC is permanently barred from asserting US9716874B2 and US10021380B1 against Revo America, Corp. in any future action. It functions as a final adjudication on the merits for purposes of this defendant, providing Revo America with complete finality on these two patents. VDPP retains the right to enforce these patents against other parties.
VDPP asserted two patents: US9716874B2 (application US15/212114), covering continuous adjustable 3Deeps filter spectacles for stereoscopic viewing and associated control systems; and US10021380B1 (application US15/907614), covering faster state transitioning in 3D filter spectacles using multi-layered variable tint materials.
A plaintiff-filed with-prejudice dismissal under Rule 41(a)(1)(A)(i) before an answer is structurally unusual because it permanently surrenders re-filing rights the plaintiff would otherwise retain. This typically signals that the parties reached a confidential resolution — such as a licensing agreement or settlement — and the defendant required the with-prejudice designation as a condition of that agreement to obtain finality.
No. The voluntary dismissal with prejudice applies only to Revo America, Corp. and does not affect the validity or enforceability of US9716874B2 and US10021380B1 against any other party. VDPP retains full rights to assert these patents in future actions against different defendants in the 3D display and adaptive optics sector.
Ramey LLP, led by William P. Ramey III, is a Houston-based patent litigation firm with a substantial volume of patent assertion filings in the Northern District of Texas. The firm frequently represents non-practicing entities and patent licensors in pre-answer settlements and licensing-focused litigation. Companies receiving demand letters from Ramey LLP in the consumer electronics and optics space should assess whether a broader multi-defendant campaign may be underway.
PatSnap Eureka searches patents and litigation data to answer instantly.