4 patents currently held
47 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.
The next term ends in Jun 2036. from the record
Of the 47 now held by other companies, 46 name Ledvance LLC 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.
0
Ending by 2030
Jun 2036
Next term end
4
Patent families
When these terms end
Held patents by the year their term ends
notable patents
all others
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 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.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Notable
Ends Jun 2036 · High confidence
Also notable
Ends Mar 2038 · High confidence
Also notable
Ends Jan 2038 · High confidence
Illumination Device with Adjustable Curved Reflector Portions
US 10,036,535
The most cited patent in this portfolio, cited by 22 later US patents, top 25% of utility patents granted in 2018 in our data. Protection runs to 2036.
Calibration and Use of Mechanical Relay at Zero Cross
US 10,535,482
Cited by 15 later US patents, top 25% of utility patents granted in 2020 in our data. Protection runs to 2038.
Radio Based Smart Device Identification Tool for Commissioning
US 11,190,926
The newest of the three, granted 2021. It anchors the portfolio to 2038, later than anything else here.
Formerly held, still cited
Notable
Ends May 2033 · High confidence
The most cited patent in this portfolio, cited by 165 later US patents, top 5% of utility patents granted in 2015 in our data. Protection runs to 2033.
now held by Ledvance LLC
Also notable
Ends no later than Jul 2033 · Medium confidence
Cited by 28 later US patents, top 10% of utility patents granted in 2019 in our data. Protection runs to 2033. 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 Ledvance LLC
Also notable
Ends Sep 2033 · High confidence
Cited by 47 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.
now held by Ledvance LLC
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 Mar 3, 2027The maintenance fee for Variable-Beam Light Source with Mixing Chamber (US 10,405,388) comes due Mar 3, 2027. Unpaid by Sep 3, 2027, it lapses early.
- 1 fee due Jul 14, 2027The maintenance fee for Calibration and Use of Mechanical Relay at Zero Cross (US 10,535,482) comes due Jul 14, 2027. Unpaid by Jan 14, 2028, it lapses early.
Recent changes
- 1 term has ended since Aug 17, 2026
Patents held now
Soonest term end first.
Showing 1 to 4 of 4
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 10,036,535 | Illumination Device with Adjustable Curved Reflector Portions In force · High confidence | In force | High confidence | |
| US 10,405,388 | Variable-Beam Light Source with Mixing Chamber In force · High confidence | In force | High confidence | |
| US 11,190,926 | Radio Based Smart Device Identification Tool for Commissioning In force · High confidence | In force | High confidence | |
| US 10,535,482 | Calibration and Use of Mechanical Relay at Zero Cross In force · High confidence | In force | High confidence |
Also on record, not counted in the 4: 47 patents in force now held by others · 25 patents ended · 10 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.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.