The Patent Finder
US

Provisional Tibial Prosthesis System

US 9,011,459 In force
OverviewFamilySources & methods

Term ends Apr 15, 2031 · Medium confidence

Why Medium: A parent in the chain could not be resolved.

Held by Zimmer, Inc.
Filed Oct 25, 2013 as application 14/063,032 · Granted Apr 21, 2015
Base term, 20 years from filing
Today
20 years from filing
2011 2031
Clock starts
Apr 15, 2011
Term ends
Apr 15, 2031
Granted
Apr 21, 2015
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,603,101, to Apr 15, 2031. The term already ends on or before that date, so the cap shortened nothing.
3 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.
14
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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. All three maintenance fees are recorded paid; no more fees are due. 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 Apr 15, 2011, when application 13/087,610, the earliest non-provisional in its chain, was filed (this one was filed Oct 25, 2013); a parent in its chain could not be resolved (the next row)Apr 15, 2031High confidence
Continuity chainA parent in the chain could not be resolveddated from this application's own claimMedium confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capDisclaimer resolved from the filed document (refs US 8,603,101)resolves to Apr 15, 2031, no earlier than this term, so no changeHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderApr 15, 2031Medium confidence

This family

US 8,603,101In force
Dec 2031
Dec 2031
Application PCT/US2011/065683PCT application
no patent term
no patent term
US 9,149,206In force
Apr 2031
Apr 2031
US 9,492,290In force
Feb 2035
Feb 2035
Application 13/837,774Abandoned
not computed
not computed
Application PCT/US2013/034286PCT application
no patent term
no patent term
Application PCT/US2013/034293PCT application
no patent term
no patent term
US 9,011,459this patent
Apr 2031
Apr 2031
8 of 14 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.

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