VDPP, LLC v. Mediatek, Inc. — Dismissed With Prejudice After 172 Days
VDPP, LLC sued Mediatek, Inc. in the Western District of Texas alleging infringement of US10021380B1, a patent covering faster state-transitioning technology for continuous adjustable 3D filter spectacles using multi-layered variable tint materials. The case was voluntarily dismissed with prejudice by the plaintiff before Mediatek filed any answer, with each party bearing its own costs.
Early voluntary exit: VDPP drops 3D spectacles patent claim against Mediatek
On August 2, 2024, VDPP, LLC — a patent assertion entity — filed suit against Mediatek, Inc. in the United States District Court for the Western District of Texas (Case No. 7:24-cv-00187), asserting infringement of US10021380B1. The patent relates to faster state transitioning for continuous adjustable 3D filter spectacles employing multi-layered variable tint materials, a technology relevant to display and imaging hardware ecosystems where Mediatek is an active semiconductor supplier.
On January 17, 2025, VDPP filed a Notice of Voluntary Dismissal With Prejudice under Federal Rule of Civil Procedure 41(a)(1)(A)(i), which permits a plaintiff to dismiss unilaterally before the defendant serves an answer or motion for summary judgment. Because Mediatek had not yet filed either, the dismissal was self-effectuating — requiring no court order to terminate the case. The court formally acknowledged the dismissal on January 21, 2025, and directed each party to bear its own costs, expenses, and attorney fees.
The 172-day duration and pre-answer exit suggest the dispute did not progress beyond the pleading stage. Voluntary dismissal with prejudice is a permanent relinquishment — VDPP cannot refile the same claims against Mediatek on this patent. The absence of any fee-shifting order is consistent with neither party having secured a litigation advantage. What drove VDPP’s decision to abandon with prejudice — whether licensing terms were reached privately, validity concerns arose, or strategic priorities shifted — is not disclosed in the public record.
Filing to Voluntary dismissal in 172 days
172 days — resolved before any defendant responsive pleading was filed
Dismissed with prejudice: what the Rule 41 exit means for both parties
Rule 41(a)(1)(A)(i): plaintiff’s unilateral right to exit
Federal Rule of Civil Procedure 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 a motion for summary judgment. Because Mediatek had done neither, VDPP’s notice was self-effectuating — the case terminated automatically upon filing. The court’s subsequent order simply acknowledged this legal reality and resolved cost allocation.
Pre-answer voluntary dismissalWith prejudice: VDPP permanently forfeits these claims against Mediatek
Dismissal with prejudice operates as a final adjudication on the merits — VDPP cannot refile the same patent infringement claims against Mediatek based on US10021380B1. This is the key distinction from a dismissal without prejudice, which would preserve the right to refile. The public record does not disclose what motivated VDPP to accept this permanent bar, leaving open the question of whether a private resolution was reached.
Permanent claim barMediatek exits without admitting liability or incurring fee award
Mediatek, Inc. never filed an answer or dispositive motion, meaning no merits ruling was made and no infringement finding attaches. The court’s cost order — each party bears its own — means Mediatek recovers no attorney fees despite the case being dismissed. This is typical for pre-answer exits where neither party has expended substantial litigation resources, and no exceptional-case finding under 35 U.S.C. § 285 was warranted.
No liability findingUS10021380B1 remains enforceable against other display technology players
A with-prejudice dismissal resolves only the dispute between VDPP and Mediatek. US10021380B1 remains issued and enforceable, and VDPP retains the right to assert it against other parties in the 3D display and variable-tint optics sector. Semiconductor and display companies whose products involve adjustable-tint spectacle driver technology should note that this patent has now been actively litigated and survived to dismissal without any validity challenge on the record.
Patent remains liveFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | VDPP, LLC | Company | Patent assertion entity — holder of US10021380B1 covering 3D spectacles technologySearch in Eureka ↗ |
| Defendant | Mediatek, Inc. | Company | Mediatek, Inc. — global semiconductor company supplying display and multimedia SoCsSearch in Eureka ↗ |
| Plaintiff counsel | Jeffrey Eugene Kubiak | Attorney | Counsel for VDPP, LLCSearch 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 Western District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s order confirms the dismissal was self-effectuating under Rule 41(a)(1)(A)(i) — no merits adjudication occurred and no infringement or invalidity finding was made. The with-prejudice designation permanently bars VDPP from reasserting these specific claims against Mediatek. The cost-neutrality order is consistent with neither party having achieved a litigation advantage. The dismissal leaves US10021380B1 legally intact and enforceable against third parties.
US10021380B1 — Adjustable 3D Filter Spectacles, Variable Tint State Transitioning
US10021380B1 (application no. US15/907614) protects technology for faster state transitioning in continuous adjustable 3D filter spectacles that use multi-layered variable tint materials. The invention addresses the control and timing of optical state changes in active eyewear — an area relevant to 3D display systems, augmented reality headsets, and variable-opacity smart glasses. The patent’s granted status as a B1 publication indicates it issued without post-issuance amendment, suggesting the original claims were accepted substantially as filed.
For semiconductor companies supplying display driver ICs or multimedia SoCs — a core Mediatek product category — the patent’s claim scope on state-transitioning logic and material-layer control may extend beyond traditional 3D cinema glasses into broader smart eyewear and adaptive optics applications. As the AR/VR and smart eyewear market expands, patents controlling optical switching speed and layer coordination become increasingly commercially significant. VDPP’s decision to assert this patent against a major chipmaker signals confidence in its applicability to modern display processing architectures.
Should your team run an FTO check against US10021380B1?
Any company developing or supplying components for adjustable-tint eyewear, 3D display systems, smart glasses, or variable-opacity optical devices should assess freedom to operate against US10021380B1. The patent’s focus on state-transitioning control and multi-layered variable tint materials means that both hardware manufacturers and firmware/driver developers may fall within its claim scope — not just end-product OEMs.
PatSnap Eureka’s FTO Search Agent can map the claims of US10021380B1 against your product architecture, identify prior art that may support a validity challenge, and surface related patents in VDPP’s portfolio that could expand the assertion risk perimeter. Given that no invalidity record was created in this litigation, a proactive FTO analysis is the most defensible posture before this patent surfaces in a new enforcement action.
Run a freedom-to-operate analysis on US10021380B1 to assess your product’s exposure
Run FTO in Eureka →Similar 3D display and optics patent cases in Western District of Texas
Cases involving display technology and optical system patents filed by assertion entities in the Western District of Texas — with comparable pre-answer dismissal profiles.
What this case signals for the 3D display and optics IP landscape
A pre-answer exit with prejudice is rarely a clean win for either side — and often signals dynamics invisible in the public docket.
Pre-answer dismissals with prejudice suggest leverage shifted before litigation began
When a plaintiff voluntarily drops claims with prejudice before the defendant has filed a single pleading, it typically signals that the anticipated cost-benefit of continued litigation deteriorated rapidly. For patent assertion entities like VDPP, this pattern may reflect defendant prior art searches, licensing negotiations, or portfolio triage — none of which appears on the public docket.
US10021380B1 carries forward unchallenged — the next target faces a harder defence
No invalidity challenge, IPR petition, or claim construction dispute was litigated here. The patent exits the case with no adverse findings. Companies in the 3D display, smart eyewear, or variable-tint optics space should treat this patent as an active enforcement risk and assess exposure before VDPP identifies its next assertion target.
VDPP v Mediatek — key questions answered
It means VDPP permanently relinquished its infringement claims against Mediatek under US10021380B1. Filed under Rule 41(a)(1)(A)(i) before Mediatek answered, the dismissal was self-effectuating. With prejudice means VDPP cannot refile the same claims against Mediatek — it operates as a final merits adjudication even though no substantive ruling was made.
Yes. The with-prejudice dismissal only resolves claims between VDPP and Mediatek. No invalidity finding was made, no IPR was filed, and the patent’s claims were never construed. US10021380B1 remains issued and legally enforceable against any third party. Companies in the 3D display, smart eyewear, or variable-tint optics space retain independent exposure.
The public record does not disclose VDPP’s motivation. Common drivers for pre-answer with-prejudice exits include private licensing settlements, discovery that the defendant’s products fall outside the asserted claims, concerns about patent validity surfaced by the defendant’s pre-suit analysis, or portfolio strategy shifts. No settlement terms or licensing agreement are publicly filed.
Mediatek was not found liable and paid no damages or attorney fees, but there was no formal finding in its favour on the merits. The case ended on VDPP’s own initiative before Mediatek filed any pleading. While Mediatek is permanently protected from refiling of these claims, it did not obtain a declaratory judgment of non-infringement or invalidity.
US10021380B1 covers faster state-transitioning control for continuous adjustable 3D filter spectacles using multi-layered variable tint materials. Companies at risk include manufacturers of active 3D eyewear, smart glasses, AR/VR headsets with variable-opacity lenses, and semiconductor suppliers whose display driver or SoC products control optical state changes in such devices. A freedom-to-operate analysis is advisable for any player in this supply chain.
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