49 patents currently held
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
The next term ends in Oct 2028. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
13
Ending by 2030
Oct 2028
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 Dec 2030 · Medium confidence
Also notable
Ends Oct 2028 · High confidence
Also notable
Ends Feb 2032 · High confidence
Light Emitting Device Comprising a Lightguide Film
US 8,905,610
Cited by 300 later US patents, top 1% of utility patents granted in 2014 in our data, and renewed at every maintenance window due so far. Protection runs to 2030.
Light Emitting Display with Light Mixing Within a Film
US 8,434,909
The most cited patent in this portfolio, cited by 345 later US patents, top 1% of utility patents granted in 2013 in our data. Protection runs to 2028. A terminal disclaimer caps this term to an earlier patent's.
Display Illumination Device with a Film-Based Lightguide Having Stacked Incident Surfaces
US 9,028,123
Cited by 246 later US patents, top 5% of utility patents granted in 2015 in our data, and renewed at every maintenance window due so far. Protection runs to 2032.
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 Jan 18, 2027The maintenance fee for Light emitting device with film-based lightguide and added reflecting surfaces (US 11,703,626) comes due Jan 18, 2027. Unpaid by Jul 19, 2027, it lapses early.
- 3 fees due Feb 11 to 27, 2027 · next Feb 11
- 1 fee due Apr 1, 2027The maintenance fee for Light emitting device with a high luminous flux density in a film-based lightguide (US 10,429,577) comes due Apr 1, 2027. Unpaid by Oct 1, 2027, it lapses early.
- 2 fees due May 5 to 28, 2027 · next May 5
- 1 fee due Sep 24, 2027The maintenance fee for Light emitting device comprising a lightguide with a glass core layer (US 10,598,848) comes due Sep 24, 2027. Unpaid by Mar 24, 2028, it lapses early.
- 2 fees due Oct 2 to 23, 2027 · next Oct 2
Recent changes
- 2 of the patents on this record were granted 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.
| Display Illumination Device with a Film-Based Lightguide Having Stacked Incident Surfaces | 8 in force | to Feb 2032 |
| Light Emitting Device Comprising a Lightguide Film | 8 in force | to Dec 2030 |
| Lightguide Including a Film with One or More Bends | 7 in force | to May 2034 |
| Directional Front Illuminating Device Comprising a Film Based Lightguide with High Optical Clarity in the Light Emitting Region | 6 in force | to Mar 2032 |
| Light Coupling into Illuminated Films | 5 in force | to Jan 2029 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,128,271 | Light Coupling into Films In force · High confidence | In force | High confidence | |
| US 8,167,461 | Method of Manufacturing a Light Emitting Device In force (reinstated) · Medium confidence | In force (reinstated) | Medium confidence | |
| US 8,434,909 | Light Emitting Display with Light Mixing Within a Film In force (reinstated) · High confidence | In force (reinstated) | High confidence | |
| US 8,714,781 | Light Coupling into Illuminated Films In force · Medium confidence | In force | Medium confidence | |
| US 8,950,902 | Light Emitting Device with Light Mixing Within a Film In force · High confidence | In force | High confidence | |
| US 10,466,409 | Light emitting device comprising a film-based lightguide restrained by a component conducting heat from a light source In force · Medium confidence | In force | Medium confidence | |
| US 10,935,716 | Film-based lightguide with bend positioning strips behind an extraction region In force (reinstated) · Low confidence | In force (reinstated) | Low confidence | |
| US 11,256,025 | Film-Based Lightguide with Adhered Component Between Fold Region and Extraction Region In force · Medium confidence | In force | Medium confidence | |
| US 11,640,026 | Automobile with Conformal Film-Based Lightguide In force · Medium confidence | In force | Medium confidence | |
| US 9,523,807 | Device Comprising a Film-Based Lightguide and Component with Angled Teeth In force (reinstated) · Medium confidence | In force (reinstated) | Medium confidence |
Also on record, not counted in the 49: 3 applications pending · 1 application 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.