Lyne Laboratories v. Samsung Electronics — Federal Circuit Affirms AC LED Patent Unpatentable
Lyne Laboratories, Inc. appealed a finding that US10966298B2, covering AC light emitting diode drive methods and apparatus, was unpatentable. The Federal Circuit affirmed in a Rule 36 judgment after 513 days of appellate proceedings, leaving Samsung’s position fully intact.
Federal Circuit closes AC LED patent challenge against Samsung with Rule 36 affirmance
Lyne Laboratories, Inc. brought this appeal before the United States Court of Appeals for the Federal Circuit (Case No. 23-1935), challenging a prior ruling that US10966298B2 — a patent covering AC light emitting diode drive methods and apparatus — was unpatentable. The appeal was filed on 22 May 2023 and pitted the patent holder against Samsung Electronics Co., Ltd., one of the world’s largest manufacturers of semiconductor and lighting components.
On 16 October 2024, the Federal Circuit issued a summary affirmance under Federal Circuit Rule 36, upholding the unpatentability determination without a written opinion. A Rule 36 judgment confirms that the appellate panel found no reversible error in the lower tribunal’s reasoning and adopts that decision in its entirety. For Lyne Laboratories, the affirmance extinguishes US10966298B2 as an enforceable asset. For Samsung, the ruling removes any residual infringement exposure tied to this patent.
The 513-day duration from filing to disposition is consistent with contested patentability appeals at the Federal Circuit, though a Rule 36 outcome suggests the panel found the lower tribunal’s analysis sufficiently clear to require no further elaboration. The public record does not disclose the specific invalidity grounds affirmed, settlement discussions, or licensing history — all of which would bear on the broader commercial significance of this patent family for the AC LED sector.
Filing to Unpatentable in 513 days
513-day appellate proceeding — longer than the Federal Circuit median for Rule 36 dispositions
Federal Circuit affirms: what the Rule 36 ruling means for both parties
Rule 36 affirmance: the court found no reversible error below
A Federal Circuit Rule 36 judgment affirms the lower tribunal’s decision without a written opinion. It signals that the panel unanimously found the prior ruling legally sound and factually supported — no new legal standard is set, and no reasoning is published. The unpatentability determination therefore stands on the grounds articulated below, with full precedential weight accorded to that prior decision rather than to any new Federal Circuit analysis.
Affirmed without opinionUS10966298B2 is cancelled — Lyne Laboratories loses enforcement rights
With the unpatentability finding affirmed, US10966298B2 is no longer a valid, enforceable patent. Lyne Laboratories cannot assert it in any future infringement proceeding. Any licensing programme built on this patent is also undermined. The Rule 36 affirmance closes appellate options at the Federal Circuit level; further review would require a petition for certiorari to the Supreme Court, which is granted only in exceptional circumstances.
Patent rights extinguishedSamsung’s invalidity position fully upheld at every level
Samsung Electronics secured a complete outcome: the patent asserted against it has been cancelled and the cancellation affirmed on appeal. Samsung faces no ongoing infringement exposure from US10966298B2. The affirmance also raises the practical bar for any related Lyne Laboratories patents in the same AC LED family — courts and tribunals may view related claims with heightened scrutiny given the confirmed invalidity of this foundational patent.
Full invalidity confirmedAC LED sector: cleared design space, but related family patents warrant monitoring
The cancellation of US10966298B2 clears freedom to operate for AC LED drive circuit designs that fell within its claims. Competitors and component manufacturers in the LED driver market — including those supplying to consumer electronics and solid-state lighting — should note this outcome. However, the AC LED patent landscape may include continuation or divisional patents from the same family that remain active, and those warrant independent FTO assessment before relying on this affirmance alone.
Design space clearedFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Lyne Laboratories, Inc. | Company | AC LED technology developer — holder of US10966298B2Search in Eureka ↗ |
| Defendant | Samsung Electronics Co., Ltd. | Company | Samsung Electronics Co., Ltd. — global semiconductor and consumer electronics manufacturerSearch in Eureka ↗ |
| Plaintiff counsel | James Carmichael | Attorney | Counsel for Lyne Laboratories, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Minghui Yang | Attorney | Counsel for Lyne Laboratories, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Stephen McBride | Attorney | Counsel for Lyne Laboratories, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Stephen Terry Schreiner | Attorney | Counsel for Lyne Laboratories, Inc.Search in Eureka ↗ |
| Plaintiff law firm | Carmichael IP PLLC | Law Firm | Representing Lyne Laboratories, Inc.Search in Eureka ↗ |
| Defendant counsel | Igor Victor Timofeyev | Attorney | Counsel for Samsung Electronics Co., Ltd.Search in Eureka ↗ |
| Defendant counsel | Joseph Palys | Attorney | Counsel for Samsung Electronics Co., Ltd.Search in Eureka ↗ |
| Defendant counsel | Naveen Modi | Attorney | Counsel for Samsung Electronics Co., Ltd.Search in Eureka ↗ |
| Defendant law firm | Paul Hastings, LLP | Law Firm | Representing Samsung Electronics Co., Ltd.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Court of Appeals for the Federal CircuitSearch in Eureka ↗ |
Official order — verbatim text
The Federal Circuit’s disposition — ‘AFFIRMED. See Fed. Cir. R. 36.’ — is the court’s most summary form of appellate resolution. Under Rule 36, the panel affirms without a written opinion when the judgment below is correct and an opinion would have no precedential value. Applying a deferential standard to factual findings and de novo review to legal conclusions, the court found no reversible error in the unpatentability determination. The brevity of the order does not diminish its finality: US10966298B2 is cancelled with no published appellate reasoning available to guide or constrain future challenges to related patents.
US10966298B2 — AC light emitting diode drive methods and apparatus
US10966298B2, filed under application number US16/866119, covers AC light emitting diode (AC LED) drive methods and apparatus — technology that enables LED systems to operate directly from alternating current without conventional rectification circuitry. This class of invention sits at the intersection of power electronics and solid-state lighting, and patents in this space typically claim circuit topologies, control methods, and efficiency-enhancing configurations. The patent was held unpatentable by the lower tribunal, a finding now affirmed by the Federal Circuit.
AC LED drive technology is commercially significant across consumer electronics, architectural lighting, and industrial illumination — markets where Samsung Electronics is a major participant. A valid patent in this domain could have supported licensing demands against a broad range of LED driver manufacturers and OEMs. The unpatentability finding, affirmed on appeal, suggests that the claimed innovations did not clear the prior art bar — a meaningful signal for competitors drafting or defending claims in the AC LED and solid-state lighting space, where the prior art base is deep and rapidly developed.
Should your product team run an FTO against US10966298B2?
For R&D teams developing AC LED drivers, solid-state lighting modules, or power-conversion circuits for LED applications, US10966298B2 is now cancelled and no longer poses a direct infringement risk. However, product teams should not rely solely on this outcome. The patent family rooted in application US16/866119 may include continuation or divisional patents with related or narrowed claims that survived or were not subject to this proceeding. An FTO limited to this single patent number is insufficient for a product launch decision.
PatSnap Eureka’s FTO Search Agent enables IP and R&D teams to map the full patent family around US16/866119, identify surviving related claims, and benchmark against the prior art landscape that underpinned the unpatentability ruling. Rather than manually tracing continuations and cross-referencing claim scope, Eureka surfaces the complete risk picture — including any Lyne Laboratories filings that post-date this cancellation — so product teams can make confident commercialisation decisions in the AC LED drive market.
Run a freedom-to-operate analysis on US10966298B2 to assess your product’s exposure
Run FTO in Eureka →Similar AC LED and solid-state lighting patent appeals at the Federal Circuit
Cases involving AC LED drive technology and unpatentability appeals at the Federal Circuit offer directly comparable claim validity and FTO precedents for the solid-state lighting sector.
What this case signals for the AC LED and solid-state lighting IP landscape
The Federal Circuit’s Rule 36 affirmance in this AC LED patent case carries practical consequences for IP strategy across the LED driver and semiconductor lighting sectors.
Rule 36 affirmances are final but unpublished — know the limits
A Rule 36 judgment carries no citable precedential reasoning. While the outcome is definitive for US10966298B2, practitioners cannot use this decision to establish legal standards in future AC LED patent disputes. The underlying tribunal’s analysis remains the operative record for any related challenge or licensing negotiation.
Patent family monitoring is critical after a core patent is cancelled
Cancellation of US10966298B2 does not automatically resolve risk from related continuations or divisional filings by Lyne Laboratories. Companies operating in the AC LED drive and solid-state lighting space should audit the full patent family stemming from application US16/866119 to identify any surviving claims before concluding that freedom to operate is fully established.
Lyne v Samsung — key questions answered
A Rule 36 affirmance means the Federal Circuit upheld the lower tribunal’s unpatentability finding for US10966298B2 without issuing a written opinion. The panel found no reversible error. The patent is cancelled and unenforceable. No new legal reasoning was published, so the decision cannot be cited as precedent in future proceedings.
No. The Federal Circuit affirmed the unpatentability determination on 16 October 2024. US10966298B2 is cancelled and cannot be asserted in any future infringement action. Lyne Laboratories’ only remaining avenue would be a petition for certiorari to the US Supreme Court, which is rarely granted in patent validity cases.
The public record from the Federal Circuit’s Rule 36 affirmance does not disclose the specific invalidity grounds. The lower tribunal’s decision contains the operative analysis. Practitioners seeking the detailed rationale should review the underlying tribunal record — likely an inter partes review or post-grant proceeding before the USPTO PTAB — for the specific prior art or statutory basis.
Not automatically. Cancellation of US10966298B2 applies only to that patent. Continuation, divisional, or related applications in the same family (rooted in US16/866119) may remain pending or granted with related claims. Companies operating in the AC LED sector should conduct a full family search to identify any surviving Lyne Laboratories patents before concluding that freedom to operate is fully established.
The cancellation of US10966298B2 clears the specific claim scope of that patent for AC LED drive circuit designers and manufacturers, including those supplying Samsung and similar OEMs. It also suggests that the claimed AC LED drive methods did not sufficiently differentiate from prior art — a signal that comparable claim strategies in related filings may face similar scrutiny. Competitors and IP teams in the solid-state lighting sector should monitor the Lyne Laboratories patent family for ongoing exposure.
PatSnap Eureka searches patents and litigation data to answer instantly.