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Lyne Laboratories v. Home Depot: Selectable CCT LED Patent Case | PatSnap
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Case ID1:21-cv-05021
FiledDec 2021
ClosedJul 2025
Patent Litigation

Lyne Laboratories v. Home Depot: LED Lighting Patent Claims Erased by IPR/PGR

Lyne Laboratories asserted 10 LED lighting patents against Home Depot’s selectable color-temperature ceiling fixtures and recessed kits. Inter partes and post-grant reviews invalidated virtually every asserted claim, and a judicial admission by Lyne’s counsel extinguished the sole surviving claim. After 1,331 days, the Northern District of Georgia entered summary judgment for Home Depot on all counts.

Resolution time
1331days
1,331 days — roughly 3.6 years from filing to final judgment, a protracted timeline shaped by an IPR/PGR stay
Patents asserted
10
US10492251B2 and 9 further patents asserted — selectable CCT integrated LED lighting systems
Outcome
Judgment on the merits for Defendant
Summary judgment granted for Home Depot; all Lyne claims dismissed on the merits after IPR/PGR invalidation
Cost ruling
Fee Order N/A
No attorneys’ fees or cost award referenced in the public record of this case
Published by PatSnap Insights Team · Verified by PatSnap Eureka Data
Case overview

How IPR, PGR, and a Judicial Admission Dismantled Lyne’s LED Portfolio Assault

Lyne Laboratories, Inc. filed suit in the Northern District of Georgia on December 8, 2021, asserting ten U.S. patents directed at selectable color-temperature (CCT) integrated LED lighting technology against Home Depot, Inc., Home Depot Product Authority, LLC, and The Home Depot, Inc. The accused products spanned more than forty SKUs — flush-mount ceiling panels, recessed kits, landscape flood lights, and ceiling fans — all featuring user-selectable or smart-controlled color temperature, a technology central to Lyne’s patent portfolio.

The case was effectively decided outside the courtroom. Inter partes review and post-grant review proceedings under 35 U.S.C. §§ 311 and 321 invalidated every asserted claim except claim 13 of U.S. Patent No. 10,652,979. That sole surviving claim was then extinguished by Lyne’s own litigation conduct: counsel signed a Joint Status Report representing that Lyne did not intend to proceed with claim 13. The court held that statement constituted a binding judicial admission, declined to permit its withdrawal in the face of an imminent summary judgment motion, and on July 31, 2025 entered final judgment in favor of defendants on all counts.

The 1,331-day duration reflects the procedural complexity inherent when USPTO post-grant proceedings run in parallel with district court litigation — the case was stayed while IPRs and PGRs played out. What makes this resolution particularly notable is not the patent office outcomes alone, but the compounding effect of counsel’s status-report admission: a drafting oversight in a routine filing cost Lyne its only remaining lifeline. The public record does not disclose whether any settlement discussions occurred or whether Lyne intends to appeal.

Case at a glance
Case no.1:21-cv-05021
CourtGeorgia Northern
JudgeVictoria M. Calvert
FiledDecember 8, 2021
ClosedJuly 31, 2025
Duration1331 days
OutcomeJudgment on the merits for Defendant
Verdict causeInfringement Action
BasisJudgment on the merits for Defendant
Prior Art Intelligence
See what prior art exists on this patent.
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Case data sourced from PACER / Georgia Northern District Court via PatSnap Eureka Litigation Intelligence Explore similar cases ↗
Case timeline

Filing to Judgment on the merits for Defendant in 1331 days

1,331 days — roughly 3.6 years from filing to final judgment, a protracted timeline shaped by an IPR/PGR stay

Case timeline: Complaint filed DEC 8 2021, OCT–NOV — 1331 days total Horizontal timeline showing the three key events in Lyne Laboratories, Inc. v Home Depot, Inc. from filing to resolution. Source: PACER, Georgia Northern District Court. DEC 8 2021 Complaint filed Pre-trial proceedings JUL 31 2025 Judgment on the merits for Defendant 1331 DAYS TOTAL
Court ruling

Summary judgment for Home Depot: what the ruling means for both parties

Legal mechanism

IPR/PGR invalidation cascaded into summary judgment under Rule 56(f)(3)

The court invoked Fed. R. Civ. P. 56(f)(3) — sua sponte summary judgment — after USPTO post-grant proceedings eliminated all but one asserted claim. With no live claims remaining in the litigation and Lyne’s counsel having judicially admitted the withdrawal of claim 13 in a Joint Status Report, the court found no genuine dispute of material fact and entered final judgment for defendants.

Sua sponte Rule 56(f)(3)
Patent holder outcome

Lyne’s ten-patent LED portfolio effectively neutralised

The combination of IPR/PGR claim cancellations and the judicial admission leaves Lyne without any court-enforceable infringement finding against Home Depot. The invalidated claims cannot be reasserted against the same products. Claim 13 of the ‘979 Patent was treated as withdrawn without prejudice, which may preserve limited future optionality, but the overall portfolio’s enforceability against Home Depot’s CCT LED product line is severely diminished.

Portfolio enforcement blocked
Defendant outcome

Home Depot secures full merits judgment across all 40+ accused SKUs

Final judgment in defendants’ favour covers all accused selectable-CCT LED products — flush-mount panels, recessed kits, landscape lights, and smart ceiling fixtures. Home Depot and its product authority affiliate face no ongoing injunction risk or damages exposure from these patents in this action. The IPR/PGR outcomes also provide broader estoppel protection limiting Lyne’s ability to relitigate invalidated claim grounds.

Full judgment, estoppel protection
Commercial implications

Selectable CCT LED market gains clarity after portfolio challenge fails

The invalidation of nine of ten asserted patents through post-grant review signals that the USPTO found significant prior art against Lyne’s CCT LED claim portfolio. Competing retailers, lighting OEMs, and distributors selling selectable colour-temperature products should monitor any surviving claims from the ‘979 Patent family, but this outcome substantially reduces the enforcement threat from this specific portfolio in the near term.

Reduced enforcement risk
Legal analysis based on PACER docket records for case 1:21-cv-05021 and PatSnap Eureka litigation intelligence Search PatSnap Eureka ↗
Parties and representation

Full party and counsel information

RoleNameTypeDetail
PlaintiffLyne Laboratories, Inc.CompanyLED lighting IP licensor — holder of US10492251B2 and nine related selectable-CCT patentsSearch in Eureka ↗
DefendantHome Depot, Inc.CompanyHome Depot, Inc. and affiliates — major U.S. home improvement retailer selling accused LED lighting SKUsSearch in Eureka ↗
Co-DefendantHome Depot Product Authority, LLCCompanySearch in Eureka ↗
Co-DefendantThe Home Depot, Inc.CompanySearch in Eureka ↗
Plaintiff counselAnna ShabalovAttorneyCounsel for Lyne Laboratories, Inc.Search in Eureka ↗
Plaintiff counselDarlene GhavimiAttorneyCounsel for Lyne Laboratories, Inc.Search in Eureka ↗
Plaintiff counselDevon C. BeaneAttorneyCounsel for Lyne Laboratories, Inc.Search in Eureka ↗
Plaintiff counselJames A. ShimotaAttorneyCounsel for Lyne Laboratories, Inc.Search in Eureka ↗
Plaintiff counselJohn L. NorthAttorneyCounsel for Lyne Laboratories, Inc.Search in Eureka ↗
Plaintiff counselMartha Logan DeckerAttorneyCounsel for Lyne Laboratories, Inc.Search in Eureka ↗
Plaintiff counselNelson M. HuaAttorneyCounsel for Lyne Laboratories, Inc.Search in Eureka ↗
Plaintiff counselSteven G. HillAttorneyCounsel for Lyne Laboratories, Inc.Search in Eureka ↗
Plaintiff law firmHill, Kertscher & Wharton, LLPLaw FirmRepresenting Lyne Laboratories, Inc.Search in Eureka ↗
Plaintiff law firmK & L Gates, LLP – PittsburghLaw FirmRepresenting Lyne Laboratories, Inc.Search in Eureka ↗
Plaintiff law firmK&L Gates LLP- ChicagoLaw FirmRepresenting Lyne Laboratories, Inc.Search in Eureka ↗
Plaintiff law firmSpencer Fane LLPLaw FirmRepresenting Lyne Laboratories, Inc.Search in Eureka ↗
Plaintiff law firmTaylor English Duma LLPLaw FirmRepresenting Lyne Laboratories, Inc.Search in Eureka ↗
Defendant counselAaron Gabriel FountainAttorneyCounsel for Home Depot, Inc.Search in Eureka ↗
Defendant counselBrian K. EricksonAttorneyCounsel for Home Depot, Inc.Search in Eureka ↗
Defendant counselChristopher G. CampbellAttorneyCounsel for Home Depot, Inc.Search in Eureka ↗
Defendant counselJackob Ben-EzraAttorneyCounsel for Home Depot, Inc.Search in Eureka ↗
Defendant counselJennifer Librach NallAttorneyCounsel for Home Depot, Inc.Search in Eureka ↗
Defendant counselNicholas G. PapastavrosAttorneyCounsel for Home Depot, Inc.Search in Eureka ↗
Defendant law firmDLA Piper LLP (US)Law FirmRepresenting Home Depot, Inc.Search in Eureka ↗
Defendant law firmDLA Piper LLP (US) – MALaw FirmRepresenting Home Depot, Inc.Search in Eureka ↗
Defendant law firmDLA Piper LLP (US)-ATLLaw FirmRepresenting Home Depot, Inc.Search in Eureka ↗
Defendant law firmDLA Piper US LLP (TX)Law FirmRepresenting Home Depot, Inc.Search in Eureka ↗
Presiding judgeJudge Victoria M. CalvertJudgeGeorgia Northern District CourtSearch in Eureka ↗
Official verdict

Official order — verbatim text

“On May 29, 2025, the Court entered an Order directing Plaintiff to show cause in writing why summary judgment should not be granted for Defendants. (“Order, Doc. 95). The Order noted the outcome of inter partes review under 35 U.S.C. § 311 (“IPR”) and post-grant review under 35 U.S.C. § 321 (“PGR”) which invalidated all claims asserted in by Plaintiff in this litigation save for claim 13 of U.S. Patent No. 10,652,979 (the ‘“979 Patent”). The Order explained that there were no claims at issue in the case in light of a statement in the parties’ Joint Status Report (Doc. 94) that Plaintiff did not propose moving forward with any claims from the ‘979 Patent (Doc. 94 at 4 n.2), and further indicated that it would not grant Plaintiff leave to amend its infringement contentions under LPR 4.5, NDGa, to add different infringement contentions. (Doc. 95 at 4). Case 1:21-cv-05021-VMC Document 99 Filed 07/31/25 Page 1 of 4 2 In response to the Order, Plaintiff makes two arguments against summary judgment. First, Plaintiff argues that the Court should allow it to amend its infringement disclosure notwithstanding its conclusions in the Order. It explains two weeks after the case was transferred here, the Court (Cohen, J.) denied Plaintiff’s request to confer for a schedule and granted a stay. (Doc. 97 at 3). But in response, Defendants point out that the factual bases for amendment arose prior to the stay, and in any case, Plaintiff could have sought amendment while the stay motion was pending. (Doc. 98 at 5, 7–8). If Plaintiff is concerned that the IPR or PGR processes have hampered its litigation efforts, that appears to be an intended effect of Congress creating the processes. The Court will adhere to its earlier ruling. Second, Plaintiff seeks to ‘withdraw its withdrawal’ of the infringement allegations of claim 13 of the ’979 patent, writing: [A]t the time the joint status report was negotiated, members of the Lynk litigation team were occupied with a variety of additional matters, and inadvertently signed off on the report indicating that it was withdrawing claim 13 of the ‘979 Patent, which was unaffected by the IPRs. (Doc. 97 at 10). Courts have considered whether a statement by counsel that a party does not intend to proceed with some aspect of a claim is a waiver or judicial admission that binds the party. See Starbuck v. R.J. Reynolds Tobacco Co., 349 F. Supp. 3d 1223, 1234 (M.D. Fla. 2018). While the Court in Starbuck declined to find a waiver or Case 1:21-cv-05021-VMC Document 99 Filed 07/31/25 Page 2 of 4 3 judicial admission stemming from counsel’s sidebar commitment to “drop” an argument, id. at 1231, it also noted in a footnote that “[t]he Eleventh Circuit generally applies judicial admission doctrine to the parties’ representations of fact in court filings.” Id. at 1233 n.7. Signing a paper presented to the Court has consequences. Fed. R. Civ. P. 11(b); see also Jacobs v. Elec. Data Sys. Corp., 240 F.R.D. 595, 601 (M.D. Ala. 2007) (“Decisions to concede certain parts of a case in order to focus on others, or not to pursue every possible claim cognizable under the law, are examples of strategic or tactical choices well within the scope of the attorney’s authority, decisions that bind the client.”). The Court finds that by signing the Joint Status Report, Plaintiff’s counsel dropped any intent to proceed with claim 13, and that concession constituted a judicial admission.1 Judicial admissions can be withdrawn with leave of court, see Summit United Serv. LLC v. Meijer, Inc. (In re Summit United Serv., LLC), No. 1:03-ap-6247-CRM, 2005 WL 6488106, at *4 (Bankr. N.D. Ga. Sept. 19, 2005), but Plaintiff has not filed a motion seeking to withdraw its statement not to proceed with claim 13. Even if the Court construed its response as a motion to withdraw, courts have looked 1 The Court does not consider whether the decision also constituted a waiver, because courts have expressed doubt as to whether waivers of arguments can be revoked at all. See United States v. Gatz, 704 F. Supp. 3d 1317, 1330 (S.D. Fla. 2023). Contrast this with judicial admissions which may be revoked, as the Court discusses below. Case 1:21-cv-05021-VMC Document 99 Filed 07/31/25 Page 3 of 4 4 down on attempts to withdraw judicial admissions in the face of summary judgment. Alliant Nat’l Title Ins. Co. v. Lafayette Lending, LLC, No. 1:22-CV-00718- SCJ, 2024 WL 4524128, at *8 (N.D. Ga. July 8, 2024) (denying request to withdraw judicial admission where “Lafayette did not attempt to withdraw its judicial admission until after Alliant’s motion for summary judgment.”). Accordingly, the Court will hold Plaintiff to its admission and treat claim 13 of the ‘979 Patent as withdrawn without prejudice. Accordingly, it is ORDERED that summary judgment is GRANTED in favor of Defendants on all claims except as provided in this Order under Federal Rule of Civil Procedure 56(f)(3). It is FURTHER ORDERED that the Clerk is DIRECTED to enter final judgment in favor of Defendants and to close the case.”
Source: PACER Docket, Case 1:21-cv-05021, Georgia Northern District Court

The court’s July 31, 2025 order is striking in its dual basis: substantive patent invalidation through USPTO post-grant proceedings and a procedural forfeiture via judicial admission. The Rule 56(f)(3) mechanism — sua sponte summary judgment — is rarely invoked but appropriate here because no triable claim remained. The without-prejudice treatment of claim 13 is a narrow carve-out, but its practical enforceability is constrained by the history of Lyne’s own withdrawal statement and the court’s explicit refusal to grant leave to amend infringement contentions.

PACER case 1:21-cv-05021 · Public docket record Explore in Eureka ↗
Patent at issue

US10492251B2 and portfolio — selectable CCT integrated LED lighting systems

Publication No.US10492251B2
Application No.US16/148945
Patent details
ProductSelectable CCT integrated LED lighting circuits and control systems
Cited in actionDecember 8, 2021

Publication No.US10499465B2
Application No.US16/241897
Patent details
ProductSelectable CCT integrated LED flush mount and recessed lighting
Cited in actionDecember 8, 2021

Publication No.US10178715B2
Application No.US13/519487
Patent details
ProductLED lighting fixtures with selectable colour temperature and dimming
Cited in actionDecember 8, 2021

Publication No.US10537001B2
Application No.US16/274164
Patent details
ProductSelectable CCT integrated LED recessed and flat panel lighting systems
Cited in actionDecember 8, 2021

Publication No.US10349379B2
Application No.US16/017408
Patent details
ProductSelectable CCT integrated LED ceiling and panel light control methods
Cited in actionDecember 8, 2021

Publication No.US10154551B2
Application No.US15/797806
Patent details
ProductIntegrated LED lighting systems with user-selectable colour temperature
Cited in actionDecember 8, 2021

Publication No.US10349479B2
Application No.US15/369218
Patent details
ProductSelectable CCT integrated LED lighting with dimming control
Cited in actionDecember 8, 2021

Publication No.US10492260B2
Application No.US16/407044
Patent details
ProductIntegrated LED lighting circuits with multi-mode CCT selection
Cited in actionDecember 8, 2021

Publication No.US10517149B2
Application No.US16/215502
Patent details
ProductSelectable colour temperature LED driver and control circuits
Cited in actionDecember 8, 2021

Publication No.US10091842B2
Application No.US15/334029
Patent details
ProductIntegrated LED lighting modules with selectable CCT and dimming
Cited in actionDecember 8, 2021

The ten asserted patents — anchored by US10492251B2 (App. No. 16/148945) and spanning applications filed between 2012 and 2019 — collectively protect integrated LED lighting systems that allow end-users to select between discrete colour temperatures, typically 3000K, 4000K, and 5000K, from a single fixture. The technology addresses a core commercial demand in residential and commercial LED retrofits: eliminating the need to stock separate warm-white and cool-white products. The portfolio covers circuit-level implementations, driver architectures, and form-factor-specific embodiments including recessed downlights, flat-panel ceiling fixtures, and landscape flood lights.

The strategic breadth of Lyne’s portfolio — ten patents covering multiple fixture categories and control methodologies — reflects an assertion designed to capture the entire selectable-CCT product tier in a major retail channel. The Home Depot product list spans over forty SKUs, suggesting that CCT selectability had become a near-universal feature of the retailer’s LED lighting range. The IPR/PGR outcomes, however, signal that the USPTO found the claim landscape crowded with prior art, potentially weakening the portfolio’s deterrent value against other retailers and OEMs assessing similar products.

Patent data sourced from USPTO via PatSnap Eureka patent database Search patent records in Eureka ↗
Freedom to operate

Should you run an FTO against US10652979B2 and the Lyne LED portfolio?

Any company manufacturing, importing, or retailing integrated LED lighting products with selectable or tuneable colour temperature — including recessed downlights, flush-mount ceiling panels, smart bulbs, and landscape fixtures — should assess residual exposure under the Lyne portfolio. While nine of ten patents were invalidated in IPRs and PGRs, the ‘979 Patent’s claim 13 was withdrawn without prejudice and survives as a live enforcement risk. Product teams expanding SKUs with 3000K/4000K/5000K switch or smart-tunable functionality should treat this as a priority FTO workstream.

PatSnap Eureka’s FTO Search Agent can map your specific LED fixture designs against the claim language of US10652979B2 claim 13 and the broader Lyne portfolio, cross-referenced against the IPR/PGR invalidation records to identify which claim elements remain in force. Eureka’s citation and family analysis also surfaces related continuation or divisional applications that may represent parallel enforcement vectors, giving your legal and R&D teams a complete picture before product launch or retail distribution agreements are signed.

PatSnap Eureka FTO Search

Run a freedom-to-operate analysis on US10492251B2 to assess your product’s exposure

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Related litigation

Similar selectable CCT LED patent infringement cases in U.S. district courts

Cases involving selectable colour-temperature LED lighting patents litigated in U.S. district courts, particularly where IPR or PGR proceedings intersected with infringement claims.

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Strategic implications

What this case signals for the LED lighting IP landscape

The Lyne v. Home Depot outcome is a case study in how parallel USPTO proceedings and procedural missteps can collapse even a large patent portfolio.

Post-grant proceedings remain the most powerful shield for retailers

Home Depot’s strategy of pursuing IPR and PGR against all ten asserted patents — invalidating nine — demonstrates that defensive USPTO proceedings are often more efficient and decisive than district court litigation for accused infringers. Retailers and distributors facing broad patent assertions in LED lighting should file early and file comprehensively.

Joint status reports and status conference statements carry binding legal risk

The court’s treatment of Lyne’s status report statement as a judicial admission — and its refusal to permit withdrawal at the summary judgment stage — underscores that routine litigation filings can have irreversible strategic consequences. IP litigation teams should treat every court filing, however administrative, as carrying the weight of a formal legal commitment.

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Unlock gated analysis on IPR estoppel scope and surviving claim risk for LED lighting retailers in U.S. district court.
Claim 13 FTO exposureIPR estoppel scopeLyne portfolio watchlist
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Frequently asked questions

Lyne v Home — key questions answered

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Assess your LED lighting patent exposure before your next product launch

The Lyne v. Home Depot outcome shows how quickly a large patent portfolio can collapse — but surviving claims and continuation filings can re-emerge as enforcement threats. Run a PatSnap FTO and monitor the ‘979 Patent family to stay ahead of the risk.

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