16 patents currently held
55 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.
4 more records may belong here and await a decision; they are not counted.
The next term ends in Jan 2033. from the record
Of the 55 now held by other companies, 55 name Signify Holding B.V. as their current owner. Each row says so.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
0
Ending by 2030
Jan 2033
Next term end
16
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 Jul 2038 · High confidence
Also notable
Ends Feb 2034 · High confidence
Also notable
Ends Sep 2038 · High confidence
Circuit and Method for Indirect Primary-Side Load Current Sensing in an Isolated Power Supply
US 10,326,377
The most cited patent in this portfolio, cited by 11 later US patents, top 25% of utility patents granted in 2019 in our data. Protection runs to 2038.
Constant Current Drive Circuit for Multi-Channel LED Lighting
US 9,125,259
Granted 2015 and renewed at every maintenance window due so far. Protection runs to 2034.
Frequency Controlled Dummy Load to Stabilize PFC Operation at Light Load Conditions
US 10,320,303
The newest of the three, granted 2019. It anchors the portfolio to 2038, later than anything else here.
Formerly held, still cited
Notable
Ends Jan 2039 · High confidence
Cited by 17 later US patents, top 25% of utility patents granted in 2019 in our data. Protection runs to 2039.
now held by Signify Holding B.V.
Also notable
Ends Oct 2036 · High confidence
The most cited patent in this portfolio, cited by 18 later US patents, top 25% of utility patents granted in 2017 in our data. Protection runs to 2036.
now held by Signify Holding B.V.
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.
- 3 fees due Dec 11 to 18, 2026 · next Dec 11
- 2 fees due Feb 15 to 22, 2027 · next Feb 15
- 1 fee due Mar 1, 2027The maintenance fee for Constant Current Drive Circuit for Multi-Channel LED Lighting (US 9,125,259) comes due Mar 1, 2027. Unpaid by Sep 1, 2027, it lapses early.
- 1 fee due Jun 30, 2027The maintenance fee for Electrically Isolated System and Method for Digital Regulation of a Programmable Lighting Device (US 10,524,334) comes due Jun 30, 2027. Unpaid by Jan 3, 2028, it lapses early.
- 1 fee due Aug 4, 2027The maintenance fee for Low Loss Voltage Feedback Method for Power Factor Correction Circuits (US 10,554,122) comes due Aug 4, 2027. Unpaid by Feb 4, 2028, it lapses early.
Recent changes
- 4 terms have ended since Aug 16, 2026
What they patent
The 1 largest of its 16 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Bobbin for Edge-Mounted Magnetic Core | 1 in force | to Dec 2038 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,922,131 | Series Resonant Inverter with Capacitive Power Compensation for Multiple Lamp Parallel Operation In force · High confidence | In force | High confidence | |
| US 9,125,259 | Constant Current Drive Circuit for Multi-Channel LED Lighting In force · High confidence | In force | High confidence | |
| US 9,693,411 | LED Driver Configuration and Dimming Interface for Dynamic Adjustment of Driver Operating Parameters In force · High confidence | In force | High confidence | |
| US 10,178,720 | Low Standby Power Control Circuit for LED Driver In force · High confidence | In force | High confidence | |
| US 10,186,809 | Printed Circuit Board Connector with Integrated EMI Noise Suppression In force · High confidence | In force | High confidence | |
| US 10,186,812 | Ferrite Wafer and Connector Assembly for EMI Noise Suppression on a Printed Circuit Board In force · High confidence | In force | High confidence | |
| US 10,320,283 | Resonant Converter with Pre-Charging Circuit for Startup Protection In force · High confidence | In force | High confidence | |
| US 10,326,377 | Circuit and Method for Indirect Primary-Side Load Current Sensing in an Isolated Power Supply In force · High confidence | In force | High confidence | |
| US 10,524,334 | Electrically Isolated System and Method for Digital Regulation of a Programmable Lighting Device In force · High confidence | In force | High confidence | |
| US 10,320,303 | Frequency Controlled Dummy Load to Stabilize PFC Operation at Light Load Conditions In force · High confidence | In force | High confidence |
Also on record, not counted in the 16: 55 patents in force now held by others · 172 patents ended · 5 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.