Invalidity dossier
US 7510299
LED lighting device for replacing fluorescent tubes
Current assignee: Ilumisys Inc
Added 9/23/2026, 2:06:59 PM
Active provider: DeepSeek · deepseek-flash
Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
US 7,510,299 B2 — LED Lighting Device for Replacing Fluorescent Tubes
Source: https://patents.google.com/patent/US7510299/en (fetched 2026-09-23)
Bibliographic data (as supplied):
- Patent number: US 7,510,299 B2
- Application number: US 11/925,037
- Filing date: 2007-10-26
- Publication date / grant: 2009-03-31
- Priority date (listed as an assumption, not a legal conclusion): 2000-02-11
- Inventors: Jos Timmermans, Jean C. Raymond, John Ivey
- Original assignee: Altair Engineering Inc.; current assignee listed as Ilumisys Inc
- Legal status: Expired – Lifetime; anticipated expiration 2021-02-12
Purpose and plain-language scope:
The title states the device is an LED lighting device for replacing fluorescent tubes — that is, a semiconductor-based light source configured as a retrofit substitute for a fluorescent tube rather than a fluorescent lamp itself. The classifications listed for the document are consistent with this: retrofit light sources with two fittings for substituting fluorescent tubes (F21K9/27), details of end parts connecting the light source to a fitting (F21K9/272), and arrangement of components within bases or housings (F21K9/275), as well as end caps and covers. The listed prior-art keywords are "light," "leds," "light tube," "power supply," and "fixture," suggesting the disclosure concerns an LED light tube, its power supply, and its relationship to a fixture.
What the supplied excerpt does not establish:
The excerpt provides no claim text, no written description, and no abstract. It therefore does not establish the specific elements of any claim, the scope of the claimed invention, the number or dependency of claims, or how the power supply, end fittings, or housing are actually configured. Also absent is any technical detail on the LEDs, drive circuitry, or mechanical structure; any specification of materials, dimensions, or electrical ratings; and any drawing content. The listed classifications and keywords are metadata and do not define claim scope.
Not addressed per instruction: litigation, assignments/ownership transfers, validity, and prior art are outside this overview. The priority date and legal status are expressly flagged in the source as assumptions, not legal conclusions, and this overview repeats them only as supplied.
Generated 10/1/2026, 9:52:32 PM
Cases on file (0)
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Litigation summary
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Proceedings on file (0)
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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.
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.
Prior art
Earlier patents, publications, and products that may anticipate or render the claims unpatentable.
Obviousness
Combinations of prior art that suggest the claimed invention would have been obvious under 35 U.S.C. § 103.
Extensions
Patent term adjustments, term extensions, continuations, divisionals, family members, and expiration dates.
Derivative works
Defensive disclosure: derivative variations of each claim designed to render future incremental improvements obvious or non-novel.