Invalidity dossier

US 12276396

Current assignee: Sigma Switches Plus, Inc.

Added 9/8/2026, 12:00:18 PM

IndustryLighting (L)
At a glanceNo PTAB challenges1 lawsuit on fileasserted by Sigma Switches Plus, Inc.Lighting (L)

Active provider: DeepSeek · deepseek-v4-flash

Auto-generating section 1 of 7: Litigation summary

Each section takes ~30-60s with web-search grounding. Keep this tab open — sections will fill in below as they complete.

Patent summary

Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.

✓ Generated

I'll search for this specific patent number and any related litigation.

Let me search more specifically for the litigation and any CAFC appeal involving this patent.

Let me search for whether this specific patent is asserted in that case and whether any CAFC appeal exists.

US Patent 12,276,396 B1 — Summary

Bibliographic Data (from USPTO/Google Patents record)

Field Value
Title LED light holding system
Patent No. US 12,276,396 B1
Application No. 18/794,130
Assignee Sigma Switches Plus, Inc.
Inventors Brian Rothbauer, Adrian Byers, Nick Rothbauer
Filing date August 5, 2024
Priority date December 26, 2023 (Provisional App. 63/614,739)
Issue (publication) date April 15, 2025
Status Active; anticipated expiration 2044-08-05
Total claims / independent claims 14 claims / 3 independent (claims 1, 6, 11)
Cited prior art of record US 2017/0055319 A1 (Rogers); family cites incl. US 6,939,029 B1, US 9,062,838 B1, CN 205979311 U, CN 116045245 A
Family members US 12,181,127 B1 ("LED light holder system," issued 2024-12-31); CIPs US 12,352,411 B1 and US 12,352,412 B1 (issued 2025-07-08); published apps US 2025/0207763 A1 and US 2025/0216060 A1

Abstract: "A light holding system having a light holder with wings that define an outer contoured surface. A channel extends inwardly of the outer contoured surface and has a bottom wall and lateral walls. The bottom wall has a ridge wall having a retention barb extending from a bottom surface. The wings are resiliently bendable between an uninstalled and an installed position. In the uninstalled position the tips of the wings are at a first distance from the retention barb and in the installed position the tips of the wings are at a second distance. The second distance is greater than the first distance. An end cap having an outer shell and a coped portion within the end may receive the light holder in the coped portion."

Technology in plain terms: A snap-in extruded aluminum/plastic LED strip holder for recreational-vehicle ceilings. A retaining strip is fastened to a roof joist between adjacent ceiling panels; the holder's backside barb snaps into the strip's grooved nubs, while its two resilient "wings" spring outward against the ceiling panels. Bending the wings into the installed position mechanically flexes the strip channel's lateral walls inward so they grip the LED strip (no adhesive needed) and simultaneously stores spring tension that holds the whole assembly tight against the ceiling. End caps cover the holder ends and house wire connections outside the joist footprint.

Independent Claims — Plain-Language Overview

Claim 1 (RV-ceiling environment; the holder alone): For an RV ceiling where a retaining strip with nubbed groove is fastened to a joist — an elongate light holder having (a) wings forming an outer contoured surface with tips, (b) a channel beneath that surface with overhanging walls near the opening, lateral walls, and a bottom wall, (c) a ridge wall extending from the channel's bottom surface on the opposite side, carrying a retention barb. The wings are resiliently bendable between an uninstalled state (tips a first distance from the channel opening) and an installed state (tips a nearer second distance from the opening); in the installed state the wings are biased away from the opening, back toward the uninstalled position. Essentially: the spring-loaded, barb-backed extrusion that snaps into the ceiling strip and spring-grips the LED strip.

Claim 6 (RV-with-panels environment; adds structural detail): Same core holder, but: the panels abut a joist with the retaining strip fastened between the panels; the overhanging walls extend toward each other and are narrower than the channel's internal width; the retention barb is spaced from the bottom surface and has a portion wider than the ridge wall. This claim adds the "narrow mouth, wide interior" channel geometry and the barb-wider-than-ridge snap geometry.

Claim 11 (general panels; broadest scope): Same holder as claim 6's core, but the environment is generalized to any adjacent panels (not limited to an RV ceiling), retaining the "barb spaced from the bottom surface, portion wider than the ridge wall" limitation, plus the resilient wings biased away from the opening when installed. This is the broadest, environment-agnostic version.

Dependent claims 2–5 (on claim 1), 7–10 (on claim 6), and 12–14 (on claim 11) add: inclined/catch surfaces on the retention barb (2, 7); inclined and catch surfaces on the overhanging walls (3, 8, 13); terminal edges closer to each other than the lateral walls (4, 9); and LED-strip capture with biased lateral walls in the installed position (5, 10, 14).

Litigation / CAFC 2026 Docket Search

  • District court: The patent's Google Patents record flags a case in the Indiana Northern District Court — Sigma Switches Plus, Inc. v. ABC Marketing, Inc., No. 3:25-cv-00888. A complaint analysis confirms Claim 1 of the '396 patent is asserted against ABC Marketing's "Stellar Lighting" LineLite Track and End Cap products, incorporating the detailed element-by-element allegations made for the related '127 patent (Compl. ¶¶114–118). Related patents 12,181,127, 12,352,411, and 12,352,412 are also asserted in the same case. As of the January 30, 2026 docket entry, the case is in early pretrial phase (preliminary infringement/invalidity contentions and claim-construction exchanges scheduled through spring 2026).
  • CAFC 2026 docket: I found no Federal Circuit appeal docket for patent 12,276,396 in the searches performed. My CAFC searches returned only unrelated Section 122 tariff appeals (e.g., State of Oregon v. Trump, Nos. 2026-1804/1805). Because the district court case is still in pretrial/claim-construction stages as of early 2026, no appeal would be expected yet.

Uncertainty note: The CAFC absence finding is based on general web searching rather than a direct query of the PACER/CAFC docket system, so I cannot rule out a recently filed or non-public appeal. The litigation details derive from third-party complaint analyses (Ex Parte/Docket Alarm), not the court docket itself.

Generated 9/8/2026, 12:04:01 PM

Cases on file (1)

Group view →

Specific litigation cases in our database that name US patent 12276396. The free-form analysis below may also discuss cases beyond this list.

Litigation summary

Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.

Not generated yet. Click Generate to call the active LLM provider with the configured prompt.

Proceedings on file (0)

All PTAB activity →

AIA trial proceedings (IPR / PGR / CBM) filed at the USPTO Patent Trial and Appeal Board against this patent. Sourced from the USPTO Open Data Portal and refreshed every six hours; each proceeding number deep-links to the PTAB E2E docket.

Current assignee: Sigma Switches Plus, Inc.

No PTAB proceedings on file. This patent has not been challenged via IPR, PGR, or CBM. The absence is itself a signal — well-asserted patents eventually attract IPRs. The LLM analysis below may surface filings the ODP feed hasn’t indexed yet.

PTAB challenges

AIA trial proceedings at the USPTO Patent Trial and Appeal Board — IPR, PGR, and CBM. Petitioners, judge panels, claim-level invalidation outcomes from Final Written Decisions, and Federal Circuit appeals. The single most important defensive datapoint after litigation history.

Not generated yet. Click Generate to call the active LLM provider with the configured prompt.

Assignment history

Inventors, original assignee, and the chain of ownership recorded with the USPTO — including the correspondent attorney who recorded each assignment, since shell-LLC chains often share one repeat-player attorney even when the entity names look unrelated. Surfaces NPE / patent-troll patterns: shell-entity transfers, known asserters in the chain, repeat correspondent fingerprints, pre-litigation assignments, and bankruptcy fire-sales.

Not generated yet. Click Generate to call the active LLM provider with the configured prompt.

Prior art

Earlier patents, publications, and products that may anticipate or render the claims unpatentable.

Not generated yet. Click Generate to call the active LLM provider with the configured prompt.

Obviousness

Combinations of prior art that suggest the claimed invention would have been obvious under 35 U.S.C. § 103.

Not generated yet. Click Generate to call the active LLM provider with the configured prompt.

Extensions

Patent term adjustments, term extensions, continuations, divisionals, family members, and expiration dates.

Not generated yet. Click Generate to call the active LLM provider with the configured prompt.

Derivative works

Defensive disclosure: derivative variations of each claim designed to render future incremental improvements obvious or non-novel.

Not generated yet. Click Generate to call the active LLM provider with the configured prompt.

Keep exploring

More patents asserted by Sigma Switches Plus, Inc.

Other patents in Lighting (L)

See all Lighting (L) patents →

This patent in court (1)

1 tracked lawsuit name US 12276396.