1,379 patents currently held
12 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 Nov 2026. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
101
Ending by 2030
Nov 2026
Next term end
1,302
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 Jun 2027 · High confidence
Also notable
Ends Jun 2029 · High confidence
Also notable
Ends Jun 2034 · High confidence
Elevator System Control Responsive to Hoistway Access Detection
US 7,954,606
Cited by 34 later US patents, top 25% of utility patents granted in 2011 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2027.
System and Method for Automatically Addressng Devices on a Communication Network
US 8,930,506
Cited by 19 later US patents, top 25% of utility patents granted in 2015 in our data, and renewed at every maintenance window due so far. Protection runs to 2029.
Ropeless Elevator System
US 10,246,298
Granted 2019 and renewed at 2 of 3 maintenance windows. Protection runs to 2034.
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.
- 6 fees due Nov 14 to 30, 2026 · next Nov 14
- 32 fees due Dec 4 to 30, 2026 · next Dec 4
- 26 fees due Jan 2 to 30, 2027 · next Jan 2
- 36 fees due Feb 1 to 28, 2027 · next Feb 1
- 29 fees due Mar 1 to 26, 2027 · next Mar 1
- 29 fees due Apr 1 to 30, 2027 · next Apr 1
- 21 fees due May 7 to 28, 2027 · next May 7
- 21 fees due Jun 3 to 26, 2027 · next Jun 3
- 26 fees due Jul 2 to 30, 2027 · next Jul 2
- 23 fees due Aug 4 to 27, 2027 · next Aug 4
- 29 fees due Sep 1 to 30, 2027 · next Sep 1
- 26 fees due Oct 2 to 30, 2027 · next Oct 2
- 11 fees due Nov 5 to 12, 2027 · next Nov 5
Recent changes
- Nov 9Assignment recorded on 1 record: Otis Mobility, S.A. to Otis Elevator Company Recorded Nov 9, 2026, executed Feb 20, 2024. Conveyance as recorded: Assignment of Assignor's Interest. A recorded assignment is a filed document, not a statement of current ownership. Reel 76687, frame 537.
- Oct 30Assignment recorded on 1 record: Otis GmbH & Co. OHG to Otis Elevator Company Recorded Oct 30, 2026, executed Jan 25, 2024. Conveyance as recorded: Assignment of Assignor's Interest. A recorded assignment is a filed document, not a statement of current ownership. Reel 76578, frame 570.
- 39 of the patents on this record were granted since Aug 16, 2026
- 23 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 1,302 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Escalator Smart Traffic Flow Lighting Device | 5 in force | to Oct 2040 |
| Elevator Hall Call Board | 4 in force | to Mar 2041 |
| Vibration Monitoring Beacon Mode Detection and Transition | 3 in force | to Jan 2042 |
| Operating/Display Panel | 3 in force | to Feb 2038 |
| Elevator Overspeed Governor with Automatic Reset | 3 in force | to Nov 2037 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,104,584 | Elevator Drive Control Strategy In force · High confidence | In force | High confidence | |
| US 8,011,479 | Electrical Signal Application Strategies for Monitoring a Condition of an Elevator Load Bearing Member In force · High confidence | In force | High confidence | |
| US 8,127,894 | Elevator Motor Drive Tolerant of an Irregular Power Source In force · High confidence | In force | High confidence | |
| US 7,882,938 | Elevator System Control Providing Specialized Service Features to Facilitate a Passenger Accessing an Assigned Elevator Car In force · High confidence | In force | High confidence | |
| US 8,789,659 | System and Method for Operating a Motor During Normal and Power Failure Conditions In force · Medium confidence | In force | Medium confidence | |
| US 7,784,598 | Two Directions Escalator Driven by a Single Machine In force · High confidence | In force | High confidence | |
| US 8,302,740 | Integrated Support for Elevator Machine, Sheaves and Terminations In force · High confidence | In force | High confidence | |
| US 7,549,517 | Elevator Car Dispatching Including Passenger Destination Information and a Fuzzy Logic Algorithm In force · High confidence | In force | High confidence | |
| US 7,954,606 | Elevator System Control Responsive to Hoistway Access Detection In force · High confidence | In force | High confidence | |
| US 7,958,971 | Wireless, Self-Contained Elevator Call Request Entry System In force · High confidence | In force | High confidence |
Also on record, not counted in the 1,379: 12 patents in force now held by others · 385 patents ended · 208 applications pending · 574 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.