The Patent Finder
US

Dust-Proof End Closure for Contractible Canopy

US 8,336,947 In force
OverviewFamilyAssignmentsSources & methods
Collateral for a security interest recorded Mar 6, 2017 (The Private Bank and Trust Company).

Term ends Feb 1, 2028 · High confidence

Filed May 25, 2010 as application 12/663,105 · Granted Dec 25, 2012
Base term plus 241 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2007 2028
Clock starts
Jun 5, 2007
Term ends
Feb 1, 2028
Granted
Dec 25, 2012
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
241
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.
3
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 241 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 Jun 5, 2007, when application 11/758,626, the earliest non-provisional in its chain, was filed (this one was filed May 25, 2010)Jun 5, 2027High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+241 days, USPTO patent term adjustment recordFeb 1, 2028High 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 orderFeb 1, 2028High confidence

This family

US 7,510,230Lapsed on the fee record
Mar 2021
Mar 2021
US 8,336,947this patent
Feb 2028
Feb 2028
2 of 3 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
Mar 2, 2017
Reel 41441, frame 903
Chenowth, LynnRoll-Rite LLCAssignment of Assignor's Interest
Mar 6, 2017
Reel 41472, frame 565
Roll-Rite LLCThe Private Bank and Trust Company, as AgentSecurity Interest
Dec 6, 2018
Reel 47693, frame 321
Cibc Bank USA (F/K/A the Privatebank and Trust Company)Roll-Rite LLCRelease of Security Interest
Dec 18, 2018
Reel 47948, frame 810
Roll-Rite LLCGoldman Sachs Bank USA, as Collateral AgentNotice of Grant of Security Interest in Patents - First Lien
Dec 18, 2018
Reel 47948, frame 831
Roll-Rite LLCUBS AG, Stamford Branch, as Collateral AgentNotice of Grant of Security Interest in Patents - Second Lien
Feb 13, 2024
Reel 66567, frame 140
Roll-Rite LLCKKR Loan Administration Services LLCSecurity Interest
Feb 15, 2024
Reel 66613, frame 211
Goldman Sachs Bank USA, as Collateral AgentRoll-Rite, LLCRelease of First Lien Security Interest in Patents (Releases RF 047948/0810)
Feb 16, 2024
Reel 66624, frame 195
UBS AG, Stamford Branch, as Collateral AgentRoll-Rite, LLCRelease of Second Lien Security Interest in Patents (Releases RF 047948/0831)

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