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US

Spacer Device

US 8,981,227 In force
OverviewFamilyAssignmentsSources & methods

Term ends Nov 20, 2033 · High confidence

Filed Jan 18, 2011 as application 13/008,112 · Granted Mar 17, 2015
Base term plus 1037 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2011 2033
Clock starts
Jan 18, 2011
Term ends
Nov 20, 2033
Granted
Mar 17, 2015
base term patent term adjustment 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
1,037
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
6
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 1037 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Jan 18, 2011, when this application, 13/008,112, was filedJan 18, 2031High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+1037 days, USPTO patent term adjustment recordNov 20, 2033High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderNov 20, 2033High confidence

This family

Application 61/296,203Provisional application
no patent term
no patent term
US 8,981,227this patent
Nov 2033
Nov 2033
US 10,063,043In force
Jun 2034
Jun 2034
US 10,181,711In force
Jun 2033
Jun 2033
Application PCT/US2015/011548PCT application
no patent term
no patent term
US 10,014,677In force
Jan 2031
Jan 2031
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
Jul 9, 2018
Reel 46293, frame 915
Richardson, Albert S., JR.Ar Patents, LLCAssignment 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