Lonestar Biometrics v. TCL Technology: Under-Display Fingerprint IP Settled After 853 Days
Texas-based patent assertion entity Lonestar Biometrics LLC filed suit against TCL Technology Group in the Eastern District of Texas, asserting three patents covering optical fingerprint scanners embedded beneath smartphone display screens. The case — targeting TCL products including the TCL 20 Pro — concluded with a joint dismissal with prejudice after 853 days, consistent with a confidential settlement.
Under-Display Fingerprint IP Battle Ends in Confidential Settlement
On June 28, 2022, Lonestar Biometrics LLC filed a patent infringement action against TCL Technology Group Corp. and six affiliated TCL entities in the U.S. District Court for the Eastern District of Texas before Judge Rodney Gilstrap. The complaint asserted three U.S. patents — US9241082B2, US9232088B1, and US9560293B2 — all directed to under-display optical fingerprint scanning technology. The accused products included the TCL 20 Pro and a broad range of TCL smartphones, tablets, TVs, and smart connected devices.
The case closed on October 28, 2024, when the parties filed a joint motion to dismiss all claims with prejudice, expressly representing to the Court that they had settled the underlying dispute. Judge Gilstrap granted the motion, ordering dismissal with prejudice and directing each side to bear its own costs, expenses, and attorneys’ fees. The with-prejudice designation means Lonestar is permanently barred from reasserting the same claims against the TCL defendants on the same patents.
At 853 days, the case ran longer than many E.D. Texas matters that resolve before trial, suggesting substantive negotiation or parallel proceedings — including the possibility of inter partes review activity — may have shaped settlement terms. The public record does not disclose financial consideration, licensing terms, or any royalty structure, which is typical for this type of confidential patent settlement. What drove ultimate resolution — claim construction risk, IPR exposure, or commercial licensing strategy — remains unknown from the docket.
Filing to Dismissed with Prejudice in 853 days
853 days — above the median for E.D. Texas patent cases that settle pre-trial
Settled and dismissed with prejudice: what the outcome means for both parties
Dismissal with prejudice bars all future reassertion
A dismissal with prejudice is a final adjudication on the merits under Rule 41. Lonestar Biometrics cannot refile these specific claims against the same TCL entities on US9241082B2, US9232088B1, or US9560293B2. This is the strongest form of dismissal from TCL’s perspective — it forecloses any future litigation on the same cause of action, regardless of what consideration, if any, changed hands.
Rule 41 — permanent bar on refilingLonestar exits with unknown consideration but no ongoing rights
For Lonestar Biometrics, a with-prejudice dismissal against these specific defendants typically signals that value was exchanged — whether as a lump-sum payment, a license, or a covenant not to sue. However, the public record is silent on financial terms. The patents themselves remain enforceable against other parties, so Lonestar’s broader assertion campaign is not foreclosed by this settlement.
Patents remain live vs. third partiesTCL secures permanent peace on three under-display fingerprint patents
All seven TCL defendants — including TCL Technology Group Corp., TCL Electronics Holdings, and five operating subsidiaries — obtained dismissal with prejudice. TCL’s own-costs outcome avoids any fee-shifting exposure. Depending on settlement terms, TCL may have secured a license covering its current and future under-display fingerprint product portfolio, though this cannot be confirmed from the public record.
Seven TCL entities coveredUnder-display fingerprint IP remains an active assertion risk for device makers
The three Lonestar patents survive and remain assertable against other smartphone, tablet, and smart device manufacturers using comparable under-display optical fingerprint technology. Competitors supplying products in the U.S. market with similar under-glass biometric implementations should treat these patents as live risk. The settlement provides no public claim-construction ruling or invalidity finding that competitors could rely upon.
Live risk for competing OEMsFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Lonestar Biometrics, LLC | Company | Patent assertion entity — holder of US9241082B2, US9232088B1, and US9560293B2 covering under-display optical fingerprint technologySearch in Eureka ↗ |
| Defendant | TCL Technology Group, Corp. | Company | TCL Technology Group Corp. — global consumer electronics manufacturer of smartphones, tablets, TVs, and smart devicesSearch in Eureka ↗ |
| Plaintiff counsel | John Andrew Rubino | Attorney | Counsel for Lonestar Biometrics, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Justin Kurt Truelove | Attorney | Counsel for Lonestar Biometrics, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Michael Mondelli , III | Attorney | Counsel for Lonestar Biometrics, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Vincent J. Rubino , III | Attorney | Counsel for Lonestar Biometrics, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Fabricant LLP (NY) | Law Firm | Representing Lonestar Biometrics, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Rubino Ip | Law Firm | Representing Lonestar Biometrics, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Rubino Law LLC | Law Firm | Representing Lonestar Biometrics, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Truelove Law Firm | Law Firm | Representing Lonestar Biometrics, LLCSearch in Eureka ↗ |
| Defendant counsel | Donald R. McPhail | Attorney | Counsel for TCL Technology Group, Corp.Search in Eureka ↗ |
| Defendant counsel | Eric W. Schweibenz | Attorney | Counsel for TCL Technology Group, Corp.Search in Eureka ↗ |
| Defendant law firm | Merchant & Gould PC | Law Firm | Representing TCL Technology Group, Corp.Search in Eureka ↗ |
| Presiding judge | Judge Rodney Gilstrap | Judge | Texas Eastern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The Court’s order adopts the parties’ joint characterisation that all claims are settled and dismissed with prejudice. The phrasing ‘have settled the claims at issue in this litigation’ confirms that a resolution was reached on the merits without judicial adjudication of infringement or validity. The with-prejudice designation extinguishes Lonestar’s cause of action against these specific TCL entities, while the each-party-bears-own-costs direction confirms no fee-shifting finding under 35 U.S.C. § 285. The three Lonestar patents are unaffected as against third parties.
US9241082B2, US9232088B1 & US9560293B2 — Under-Display Optical Fingerprint Scanning
The three asserted patents — US9241082B2, US9232088B1, and US9560293B2 — share a common technical domain: capturing and processing fingerprint biometric data using optical sensors positioned beneath a device’s display screen. This under-display configuration eliminates the need for a discrete fingerprint sensor, enabling edge-to-edge display designs. The patents were filed on application numbers US14/623478, US14/625593, and US14/997519 respectively, positioning them squarely in the generation of mobile biometric authentication technology that preceded widespread commercial deployment of under-display fingerprint sensors in premium smartphones.
Under-display optical fingerprint technology has become a standard feature across the mid-range and premium smartphone segment globally, with TCL, Samsung, OnePlus, Oppo, Vivo, and Huawei among the major OEMs deploying comparable implementations. The three Lonestar patents collectively represent a meaningful assertion risk for any device manufacturer shipping products with under-glass optical biometric sensors in the U.S. market. Because no claim construction order was issued in this case, the precise scope of the claims remains judicially undefined — a significant gap for competitors assessing freedom to operate.
Should you run an FTO against US9241082B2, US9232088B1 & US9560293B2?
Any company designing, manufacturing, or importing smartphones, tablets, or other connected consumer devices equipped with under-display optical fingerprint sensors for the U.S. market should treat these three Lonestar patents as active clearance targets. The settlement with TCL provides no judicial claim narrowing or invalidity determination that third parties can rely upon. Product and engineering teams implementing optical under-glass biometric authentication — including display-integrated CMOS optical sensor arrays — should commission an FTO analysis before U.S. commercial launch.
PatSnap Eureka’s FTO Search Agent can map the independent and dependent claims of US9241082B2, US9232088B1, and US9560293B2 against your product’s technical architecture, identify relevant prior art that could support design-arounds or IPR petitions, and surface related Lonestar portfolio assets that may not yet be in litigation. Eureka’s claim-by-claim analysis helps R&D and IP teams prioritise clearance work before products reach the U.S. market.
Run a freedom-to-operate analysis on US9241082B2 to assess your product’s exposure
Run FTO in Eureka →Similar Under-Display Biometrics & Mobile Hardware Patent Cases
Explore comparable under-display fingerprint and mobile biometric patent infringement cases filed in the Eastern District of Texas and related U.S. district courts.
What this case signals for the under-display biometrics IP landscape
Three asserted patents, a major global OEM, and a confidential settlement — this case illustrates the continued potency of biometric hardware IP in E.D. Texas.
E.D. Texas remains the preferred forum for biometric patent assertions
Judge Gilstrap’s docket continues to attract patent assertion entities targeting consumer electronics OEMs. Filing in E.D. Texas signals a plaintiff confident in venue advantages — discovery costs and trial speed can pressure defendants toward early settlement. Device makers with U.S. sales exposure should map their under-display fingerprint supply chain against active patent portfolios now.
Own-costs orders limit collateral deterrence for future plaintiffs
The court’s each-party-bears-own-costs order is the default outcome in most E.D. Texas settlements and imposes no financial deterrent on future assertion activity. Absent an exceptional case finding under 35 U.S.C. § 285, plaintiffs face no attorney-fee risk on settlement, which contributes to the continued volume of NPE filings in this district against consumer electronics companies.
Lonestar v TCL — key questions answered
Lonestar Biometrics asserted three patents: US9241082B2, US9232088B1, and US9560293B2. All three cover under-display optical fingerprint scanning and recognition technology for mobile and handheld devices. The accused products included the TCL 20 Pro and a range of TCL smartphones, tablets, and smart connected devices.
The case ended on October 28, 2024, with a dismissal with prejudice following the parties’ joint motion confirming settlement. Dismissed with prejudice means the claims are permanently extinguished — Lonestar cannot refile the same claims against the same TCL entities on these patents. Each party was ordered to bear its own costs and attorneys’ fees.
No. The settlement and dismissal with prejudice apply only to the named TCL defendants. US9241082B2, US9232088B1, and US9560293B2 remain enforceable against other parties. Competing device manufacturers shipping under-display optical fingerprint products in the U.S. market receive no protection from this settlement and should conduct independent freedom-to-operate analysis.
Based on the public docket, no Markman order was issued before the case settled. This means there is no judicial claim construction record that competitors or third parties can use to assess the scope of the Lonestar patents. The absence of a claim construction ruling is a significant gap for any OEM evaluating FTO risk against these three patents.
The Eastern District of Texas — particularly before Judge Rodney Gilstrap — is a historically favoured forum for patent assertion entities due to its plaintiff-friendly procedural history, efficient case management, and established patent litigation infrastructure. TCL’s U.S. product sales provided a basis for venue. E.D. Tex. filing typically signals a plaintiff with confidence in venue dynamics and willingness to prosecute through trial if settlement is not reached.
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