The Patent Finder
US

Sparc and Methods of Use Thereof

US 8,916,204 Term ended
OverviewFamilySources & methods

Term ended May 16, 2025 · Medium confidence

Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 8,420,603), so the cap could be lower.

Filed Mar 13, 2013 as application 13/800,132 · Granted Dec 23, 2014
Base term, 20 years from filing
Today
20 years from filing
Term ended May 16, 2025
2005 2026
Clock starts
May 16, 2005
Term ended
May 16, 2025
Granted
Dec 23, 2014
base term after the term ends 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 8,420,603, to May 16, 2025. 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.
5
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 were paid, so no fee lapse ended it. 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 May 16, 2005, when application PCT/US2005/017174, the earliest non-provisional in its chain, was filed (this one was filed Mar 13, 2013)May 16, 2025High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capDisclaimer resolved from the filed document (refs US 8,420,603)resolves to May 16, 2025, no earlier than this term, so no changeMedium confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidterm endedHigh confidence
Computed term endThe steps above, in orderMay 16, 2025Medium confidence

This family

Application PCT/US2005/017174PCT application
no patent term
no patent term
US 8,420,603In force
no later than Dec 2026
no later than Dec 2026
US 8,916,204this patent
May 2025
May 2025
Application 14/581,450Abandoned
not computed
not computed
Application 15/148,625Abandoned
not computed
not computed
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