47 patents currently held
31 more in force are now held by other companies
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
3 more records may belong here and await a decision; they are not counted.
The next term ends in Aug 2029. from the record
Of the 31 now held by other companies, 30 name Ennostar Corporation as their current owner, and 1 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
13
Ending by 2030
Aug 2029
Next term end
18
Patent families
When these terms end
Held patents by the year their term ends
notable patents
fee due within 90 days
all others
Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
Notable: the highest-ranked patents in this portfolio by citations and family size. Fee due within 90 days: a maintenance fee is due within 90 days of when this page was computed and not yet paid.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Notable
Ends Aug 2033 · High confidence
Also notable
Ends Jun 2030 · Medium confidence
Also notable
Ends Mar 2037 · High confidence
Sealed and Sealable Lighting Systems Incorporating Flexible Light Sheets and Related Methods
US 9,506,633
Cited by 43 later US patents, top 10% of utility patents granted in 2016 in our data, and renewed at every maintenance window due so far. Protection runs to 2033. A terminal disclaimer caps this term to an earlier patent's.
High Efficiency LEDs and LED Lamps
US 8,921,134
Cited by 35 later US patents, top 25% of utility patents granted in 2014 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2030. A terminal disclaimer caps this term to an earlier patent's.
Lighting Systems Incorporating Connections for Signal and Power Transmission
US 10,731,828
Cited by 14 later US patents, top 25% of utility patents granted in 2020 in our data. Protection runs to 2037.
Formerly held, still cited
Notable
Ends Jan 2033 · High confidence
Cited by 81 later US patents, top 10% of utility patents granted in 2014 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2033.
now held by Ennostar Corporation
Also notable
Ends no later than Jan 2035 · Medium confidence
Cited by 49 later US patents, top 10% of utility patents granted in 2016 in our data, and renewed at every maintenance window due so far. Protection runs to 2035. A terminal disclaimer is on file and its reference is not resolved, so no cap is applied and the date may move earlier, never later.
now held by Ennostar Corporation
Fee deadlines
Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
- 1 fee due Dec 9, 2026The maintenance fee for Electronic Devices with Yielding Substrates (US 9,054,290) comes due Dec 9, 2026. Unpaid by Jun 9, 2027, it lapses early.
- 2 fees due Jan 4 to 9, 2027 · next Jan 4
- 2 fees due Feb 13 to 27, 2027 · next Feb 13
- 2 fees due May 3 to 5, 2027 · next May 3
- 1 fee due Jun 17, 2027The maintenance fee for Lighting Systems Incorporating Connections for Signal and Power Transmission (US 10,508,798) comes due Jun 17, 2027. Unpaid by Dec 17, 2027, it lapses early.
- 1 fee due Oct 2, 2027The maintenance fee for Wiring Boards for Array-Based Electronic Devices (US 11,950,337) comes due Oct 2, 2027. Unpaid by Apr 3, 2028, it lapses early.
Recent changes
- 2 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 18 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Lighting Systems Incorporating Connections for Signal and Power Transmission | 10 in force | to Jan 2039 |
| Wiring Boards for Array-Based Electronic Devices | 9 in force | to Mar 2036 |
| High Efficiency LEDs and LED Lamps | 7 in force | to Jun 2030 |
| Electronic Devices with Yielding Substrates | 4 in force | to Jun 2031 |
| Modular LED Lighting Systems | 3 in force | to Jan 2036 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US D736,421 | Undulating Flexible Illumination Sheet with Light Emitting Surface In force · High confidence | In force | High confidence | |
| US D736,422 | Undulating Flexible Illumination Sheet with Light-Emitting Surface Regions In force · High confidence | In force | High confidence | |
| US D736,423 | Undulating Flexible Illumination Sheet with Opposing Light-Emitting Surfaces In force · High confidence | In force | High confidence | |
| US D736,424 | Undulating Flexible Illumination Sheet with Opposing Surfaces Having Light-Emitting Surface Regions In force · High confidence | In force | High confidence | |
| US D736,425 | Undulating Flexible Illumination Sheet with Opposing Surfaces Having Light-Emitting Surface Regions In force · High confidence | In force | High confidence | |
| US D736,963 | Undulating Flexible Illumination Sheet with Light-Emitting Surface Regions In force · High confidence | In force | High confidence | |
| US 8,921,134 | High Efficiency LEDs and LED Lamps In force · Medium confidence | In force | Medium confidence | |
| US 9,179,510 | High Efficiency LEDs and LED Lamps In force (reinstated) · Medium confidence | In force (reinstated) | Medium confidence | |
| US 9,559,150 | High Efficiency LEDs and LED Lamps In force · Medium confidence | In force | Medium confidence | |
| US 9,765,936 | High Efficiency LEDs and LED Lamps In force · Medium confidence | In force | Medium confidence |
Also on record, not counted in the 47: 31 patents in force now held by others · 59 patents ended · 22 applications abandoned. List them
Sources and methods
Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built
Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.
Fee due within 90 days marks a patent with a maintenance fee due within 90 days of the date this page was computed and not yet recorded paid, so it can end earlier than the bar shows. A fee left unpaid ends the patent at the close of the six month grace period that follows its due date, not on the due date itself. It is not a prediction that the fee will be missed.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.