The Patent Finder
US

Electric Power Storage

US 7,808,124 Term ended
OverviewFamilyAssignmentsSources & methods

Term ended Sep 30, 2026 · High confidence

Filed Apr 5, 2007 as application 11/697,014 · Granted Oct 5, 2010
Base term plus 589 days of patent term adjustment (USPTO delay)
Today
20 years from filing
Term ended Sep 30, 2026
2005 2026
Clock starts
Feb 18, 2005
Term ended
Sep 30, 2026
Granted
Oct 5, 2010
base term patent term adjustment 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
589
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.
16
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 589 days past its 20-year base term on prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. 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 Feb 18, 2005, when applications 11/062,035 and 11/062,179, the earliest non-provisional applications in its chain, were filed (this one was filed Apr 5, 2007)Feb 18, 2025High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+589 days, USPTO patent term adjustment recordSep 30, 2026High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidterm endedHigh confidence
Computed term endThe steps above, in orderSep 30, 2026High confidence

This family

Application 11/062,035Abandoned
not computed
not computed
Application 11/062,179Abandoned
not computed
not computed
US 8,638,182In force
Jul 2031
Jul 2031
US 8,629,734In force
Jan 2032
Jan 2032
Application PCT/US2006/004324PCT application
no patent term
no patent term
Application PCT/US2006/004522PCT application
no patent term
no patent term
US 9,118,216In force
Dec 2030
Dec 2030
US 7,808,124this patent
Sep 2026
Sep 2026
8 of 16 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
Aug 15, 2007
Reel 19696, frame 633
Corum, James F.CPG Technologies, LLCAssignment of Assignor's Interest
Jun 28, 2023
Reel 64148, frame 31
CPG Technologies, LLCQuantum Wave, 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