The Patent Finder
US

Elevator Safety Device and Method of Activating an Elevator Safety Device

US 12,577,083 In force
OverviewAssignmentsSources & methods

Also listed on Otis Mobility, S.A., an earlier holder on the record. The recorded assignments below show how it moved.

Term ends Dec 6, 2044 · High confidence

Filed Nov 26, 2024 as application 18/959,899 · Granted Mar 17, 2026
Base term plus 10 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2024 2044
Clock starts
Nov 26, 2024
Term ends
Dec 6, 2044
Granted
Mar 17, 2026
base term 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
10
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
0 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.

This patent's term runs 10 days past its 20-year base term on prosecution delay. 0 of 3 maintenance fees are paid so far. Confidence: High. from the record

How we calculated this date

One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Nov 26, 2024, when this application, 18/959,899, was filedNov 26, 2044High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+10 days, USPTO patent term adjustment recordDec 6, 2044High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events0 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderDec 6, 2044High confidence

Assignments

Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
RecordedAssignorAssigneeConveyance
Nov 26, 2024
Reel 69408, frame 499
Martí Sánchez, Luis; García Canales, ManuelOtis Mobility, S.a.Assignment of Assignor's Interest
Nov 26, 2024
Reel 69408, frame 553
Otis Mobility, S.a.Otis Elevator CompanyAssignment of Assignor's Interest

Sources

Google Patents · The patent document at USPTO · Assignment records at USPTO

USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup

Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited