0 patents currently held
25 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.
This portfolio holds none of the 25 US patents in force on its record. from the record
Of the 25 now held by other companies, 24 were conveyed to Otis Elevator Company in the filing they arrived in, 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
none
Next term end
When these terms end
Held patents by the year their term ends
2026 · 0 end2027 · 02028 · 02029 · 02030 · 0
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
None of the currently held patents qualifies as notable.
Formerly held, still cited
Notable
Ends Apr 2042 · High confidence
The newest of the three, granted 2023. It anchors the portfolio to 2042, later than anything else here.
conveyed to Otis Elevator Company
Also notable
Ends May 2038 · High confidence
The earliest of the three still in force, granted 2020 and renewed since. Its term ends first, in 2038.
conveyed to Otis Elevator Company
Also notable
Ends Apr 2040 · High confidence
Granted 2021. Computed term ends 2040.
conveyed to Otis Elevator Company
Fee deadlines
No maintenance fee falls due on this company's record before Nov 10, 2027.
Recent changes
- 1 of the patents on this record was granted since Aug 17, 2026
Patents held now
Soonest term end first.
Also on record: 25 patents in force now held by others · 3 patents ended · 8 applications pending · 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.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.