The Patent Finder
US

Controlled Flight of a Multicopter Experiencing a Failure Affecting an Effector

US 11,591,071 In force
OverviewFamilyAssignmentsSources & methods

Term ends Jun 5, 2034 · Medium confidence

Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 10,308,349), so the cap could be lower.

Held by Eth Zurich
Filed Mar 9, 2021 as application 17/195,744 · Granted Feb 28, 2023
Base term plus 144 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
20 years from filing
2014 2034
Clock starts
Jun 5, 2014
Term ends
Jun 5, 2034
Granted
Feb 28, 2023
base term fee events 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
144
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 10,308,349, US 10,946,950, US 9,856,016.
1 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
8
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.

This patent's term runs 144 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 1 of 2 maintenance fees is paid so far. Confidence: Medium. 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 Jun 5, 2014, when application PCT/EP2014/061760, the earliest non-provisional in its chain, was filed (this one was filed Mar 9, 2021)Jun 5, 2034High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+144 days, USPTO patent term adjustment recordOct 27, 2034High confidence
Terminal disclaimer capDisclaimer resolved from the filed document (refs US 10,308,349, US 10,946,950, US 9,856,016)capped to Jun 5, 2034Medium confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events1 of 2 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderJun 5, 2034Medium confidence

This family

US 9,856,016In force
Jul 2034
Jul 2034
US 10,308,349In force
no later than Jun 2034
no later than Jun 2034
US 10,562,611In force
Jun 2034
Jun 2034
US 10,946,950In force
Jun 2034
Jun 2034
US 11,591,071this patent
Jun 2034
Jun 2034
US 12,473,076In force
Jul 2035
Jul 2035
Application 19/366,684Pending
not computed
not computed
7 of 8 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.

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
May 16, 2022
Reel 59920, frame 782
D'andrea, Raffaello; Lupashin, Sergei; Mueller, Mark W.; Waibel, MarkusEth ZurichAssignment 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