Mate LLC v. Advanced Lighting Concepts: Six-Patent LED Lighting Dispute Settles With Prejudice
Mate, LLC brought a patent infringement action against Advanced Lighting Concepts, LLC in the Eastern District of California, asserting six patents covering human centric LED lighting systems and low voltage drivers. After 835 days of litigation, the parties reached a confidential settlement and jointly moved for dismissal of all claims and counterclaims with prejudice — each side bearing its own costs.
Multi-Patent Human Centric LED Lighting Dispute Ends in Confidential Settlement
Mate, LLC filed suit against Advanced Lighting Concepts, LLC on July 26, 2022, in the U.S. District Court for the Eastern District of California (Case No. 3:22-cv-01095). The complaint alleged infringement of six patents spanning human centric LED lighting architecture and low voltage driver and control technology, including both U.S. patents and a European patent (EP3231255B1). The accused products are described as Environmental Light products and novel low voltage drivers and controls for human centric LED lighting.
The case closed on November 7, 2024, when the Court granted the parties’ joint motion to dismiss all claims and counterclaims with prejudice. The dismissal with prejudice means neither party may reassert the same claims arising from the same accused products and patents. The Court expressly declined to retain jurisdiction to enforce the settlement agreement, meaning any future enforcement dispute would require a new action. Each party was ordered to bear its own costs and fees, consistent with a negotiated resolution rather than a contested judgment.
The 835-day duration suggests the case progressed well beyond the pleadings stage before settlement was reached, though the specific procedural milestones — claim construction, expert discovery, or dispositive motions — that catalysed resolution are not disclosed in the public record. The breadth of the patent portfolio asserted (six patents across multiple application families, including a European grant) and the large litigation teams fielded by both sides suggest significant commercial stakes. The terms of the underlying settlement agreement remain confidential.
Filing to Dismissed with Prejudice in 835 days
835 days — above the median for multi-patent district court patent disputes, suggesting contested claim construction or failed early settlement attempts
Settled and dismissed with prejudice: what the Court’s order means for both parties
Dismissed with prejudice bars all future reassertion of these claims
A dismissal with prejudice under Federal Rule of Civil Procedure 41 is a final adjudication on the merits for preclusion purposes. Mate, LLC cannot re-file the same patent infringement claims against Advanced Lighting Concepts based on the same six patents and the same accused products. This is a permanent bar — materially stronger than a without-prejudice dismissal, which would preserve the right to re-sue.
Permanent claim barMate secures a confidential resolution without litigating validity to judgment
Mate, LLC avoids the risk of an adverse ruling on patent validity or non-infringement — outcomes that could have weakened the portfolio against other potential infringers. The patents remain in force and enforceable against third parties. The settlement terms are not public, so whether Mate extracted a licence, royalties, or a product design-around commitment from Advanced Lighting Concepts cannot be determined from the public record.
Portfolio preservedAdvanced Lighting Concepts exits litigation without a public invalidity finding
Advanced Lighting Concepts avoids a jury verdict or summary judgment on infringement. The with-prejudice dismissal protects the company from being re-sued by Mate on these specific claims. However, because no invalidity ruling was entered, the six asserted patents survive and could still be asserted against Advanced Lighting Concepts’ competitors or, in different fact patterns, potentially revisited in other proceedings. The mutual cost-bearing order suggests neither side claimed a dominant litigation position.
No invalidity rulingSix LED lighting patents remain live; sector competitors should monitor closely
The settlement leaves all six patents unimpaired and potentially enforceable against other players in the human centric LED lighting and low voltage driver market. Companies with competing Environmental Light-type products or low voltage LED driver controls should assess their freedom to operate against the Mate portfolio. The inclusion of EP3231255B1 signals Mate’s IP enforcement posture extends beyond U.S. borders, raising considerations for European market participants as well.
FTO risk remainsFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Mate, LLC. | Company | LED lighting technology company — holder of six human centric lighting and low voltage driver patentsSearch in Eureka ↗ |
| Defendant | Advanced Lighting Concepts, LLC | Company | Advanced Lighting Concepts, LLC — developer and seller of Environmental Light and low voltage LED driver productsSearch in Eureka ↗ |
| Plaintiff counsel | Byron Everard Ma | Attorney | Counsel for Mate, LLC.Search in Eureka ↗ |
| Plaintiff counsel | John K. Buche | Attorney | Counsel for Mate, LLC.Search in Eureka ↗ |
| Plaintiff counsel | Joseph C. Daniels | Attorney | Counsel for Mate, LLC.Search in Eureka ↗ |
| Plaintiff counsel | Joshua Ryan Gray | Attorney | Counsel for Mate, LLC.Search in Eureka ↗ |
| Plaintiff counsel | Kyle Glendon Hepner | Attorney | Counsel for Mate, LLC.Search in Eureka ↗ |
| Plaintiff counsel | Marshall J. Schmitt | Attorney | Counsel for Mate, LLC.Search in Eureka ↗ |
| Plaintiff counsel | Melanie J. Reichenberger | Attorney | Counsel for Mate, LLC.Search in Eureka ↗ |
| Plaintiff counsel | Michael Ryan Laing | Attorney | Counsel for Mate, LLC.Search in Eureka ↗ |
| Plaintiff counsel | Shane Brunner | Attorney | Counsel for Mate, LLC.Search in Eureka ↗ |
| Plaintiff counsel | William E Bradley | Attorney | Counsel for Mate, LLC.Search in Eureka ↗ |
| Plaintiff law firm | Buche & Associates PC | Law Firm | Representing Mate, LLC.Search in Eureka ↗ |
| Plaintiff law firm | Michael Best & Friedrich LLP | Law Firm | Representing Mate, LLC.Search in Eureka ↗ |
| Plaintiff law firm | Robinson & Cole LLP | Law Firm | Representing Mate, LLC.Search in Eureka ↗ |
| Defendant counsel | Andrew Swanson Brown | Attorney | Counsel for Advanced Lighting Concepts, LLCSearch in Eureka ↗ |
| Defendant counsel | Bryon T. Wasserman | Attorney | Counsel for Advanced Lighting Concepts, LLCSearch in Eureka ↗ |
| Defendant counsel | Chad Justin Ray | Attorney | Counsel for Advanced Lighting Concepts, LLCSearch in Eureka ↗ |
| Defendant counsel | David Constantine Radulescu | Attorney | Counsel for Advanced Lighting Concepts, LLCSearch in Eureka ↗ |
| Defendant counsel | Etai Y. Lahav | Attorney | Counsel for Advanced Lighting Concepts, LLCSearch in Eureka ↗ |
| Defendant counsel | Isabelle Lee Hutchinson | Attorney | Counsel for Advanced Lighting Concepts, LLCSearch in Eureka ↗ |
| Defendant counsel | Jamil N. Alibhai | Attorney | Counsel for Advanced Lighting Concepts, LLCSearch in Eureka ↗ |
| Defendant counsel | John D. Van Loben Sels | Attorney | Counsel for Advanced Lighting Concepts, LLCSearch in Eureka ↗ |
| Defendant counsel | Kevin S. Kudlac | Attorney | Counsel for Advanced Lighting Concepts, LLCSearch in Eureka ↗ |
| Defendant counsel | Winston O. Huff | Attorney | Counsel for Advanced Lighting Concepts, LLCSearch in Eureka ↗ |
| Defendant law firm | Jeffer Mangels Butler & Mitchell LLP | Law Firm | Representing Advanced Lighting Concepts, LLCSearch in Eureka ↗ |
| Defendant law firm | Kelly Hart & Hallman LLP | Law Firm | Representing Advanced Lighting Concepts, LLCSearch in Eureka ↗ |
| Defendant law firm | Munsch, Hardt, Kopf & Harr PC | Law Firm | Representing Advanced Lighting Concepts, LLCSearch in Eureka ↗ |
| Defendant law firm | Radulescu LLP | Law Firm | Representing Advanced Lighting Concepts, LLCSearch in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | California Eastern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The Court’s order adopts the parties’ joint framing without independently adjudicating the merits, which is standard in settled patent cases. The express declination to retain jurisdiction to enforce the settlement agreement is a deliberate judicial choice that shifts any future enforcement risk back to the parties — if either side breaches the settlement, a new action must be filed rather than proceeding on motion. The with-prejudice designation ensures finality on the asserted claims while leaving the underlying patents unimpaired for third-party enforcement.
Six LED Lighting Patents — Human Centric Lighting and Low Voltage Driver Technology
The six asserted patents — EP3231255B1, US9320093B2, US9591713B2, US9049759B2, US9078310B2, and US8957601B2 — collectively cover a technology cluster centred on human centric LED lighting: systems designed to modulate light output in ways that align with human circadian rhythms and environmental comfort. The U.S. applications span filing dates from 2012 through 2015, suggesting a sustained R&D programme that matured into a layered patent portfolio. The European grant (EP3231255B1) extends protection into EU jurisdictions.
Human centric lighting is a commercially significant segment attracting growing regulatory and consumer interest, driven by energy efficiency mandates, workplace wellness standards, and smart building integration. Mate’s portfolio targets the driver and control layer — the hardware and firmware that governs how LED systems respond to environmental and user inputs — which is a critical point of differentiation in competitive LED product design. Companies developing or commercialising low voltage LED drivers, environmental light control systems, or circadian lighting products should treat this portfolio as a material FTO consideration.
Should your team run an FTO against Mate’s LED lighting patent portfolio?
Any company designing, importing, or selling low voltage LED driver products, human centric lighting systems, or Environmental Light-type fixtures for U.S. or European markets should assess exposure against Mate’s six-patent portfolio. The patents cover both apparatus and method claims across driver circuits and lighting control architectures — meaning FTO risk can arise at the component, system, or use level. The 835-day litigation against Advanced Lighting Concepts demonstrates Mate’s willingness to pursue enforcement through extended district court proceedings.
PatSnap Eureka’s FTO Search Agent can map each of the six Mate patents against your product architecture, identify claim elements most relevant to your driver or control design, and surface prior art that informed the patent scope. Eureka also tracks related continuation and divisional applications that may extend the portfolio’s reach beyond the six patents asserted in this case — a critical consideration when the original filing dates span 2012 to 2015.
Run a freedom-to-operate analysis on EP3231255B1 to assess your product’s exposure
Run FTO in Eureka →Similar LED Lighting Patent Infringement Cases in U.S. District Courts
Cases involving human centric LED lighting, low voltage driver patents, and multi-patent infringement actions in California and other U.S. district courts.
What this case signals for the human centric LED lighting IP landscape
A six-patent enforcement action settled after 835 days signals an actively defended portfolio with clear commercial teeth in the LED lighting sector.
Multi-patent stacking amplifies settlement pressure on accused infringers
Asserting six patents simultaneously — spanning drivers, controls, and lighting architecture — creates overlapping infringement vectors that are costly to defend against individually. This case illustrates how patent portfolio depth in the LED lighting space can accelerate settlement timelines relative to single-patent disputes, even without a verdict.
EP3231255B1 signals cross-border enforcement risk for European LED competitors
The inclusion of a granted European patent alongside five U.S. patents in a California action is consistent with a coordinated multi-jurisdictional enforcement strategy. LED lighting companies operating in EU markets should assess whether EP3231255B1 poses independent exposure, independent of the U.S. settlement outcome.
Mate v Advanced — key questions answered
Mate, LLC asserted six patents: EP3231255B1, US9320093B2, US9591713B2, US9049759B2, US9078310B2, and US8957601B2. The patents cover human centric LED lighting systems and low voltage driver and control technology. The accused products were Advanced Lighting Concepts’ Environmental Light products and novel low voltage drivers and controls for human centric LED lighting.
Dismissal with prejudice is a final, on-the-merits termination of all claims and counterclaims in the action. Mate, LLC cannot re-file the same infringement claims against Advanced Lighting Concepts based on the same patents and accused products. The Court granted the parties’ joint motion, and each side was ordered to bear its own costs and fees. The settlement terms remain confidential.
When a district court declines to retain jurisdiction to enforce a settlement agreement, it means any future breach of the settlement cannot be addressed by motion in the existing case. The parties would need to file a new action — typically in state court for breach of contract or in federal court if independent jurisdiction exists. This is a deliberate judicial choice that limits the Court’s ongoing role after the case closes.
No. The settlement and dismissal with prejudice do not constitute a ruling on the validity or invalidity of the six asserted patents. The patents remain granted and enforceable. No claim construction order, summary judgment on validity, or jury verdict was entered. Third parties remain subject to potential infringement claims from Mate, LLC under these patents.
EP3231255B1 is a European Patent granted by the European Patent Office, covering human centric LED lighting technology. While a European patent cannot be directly enforced in U.S. courts, its assertion in the complaint likely served to characterise the scope of Mate’s global IP position and the technological significance of the asserted invention cluster. Separate enforcement proceedings in European jurisdictions would be required to assert EP3231255B1 against EU-based activities.
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