The Patent Finder
US

High frequency power source

US 9,750,557 Term ended
OverviewFamilyAssignmentsSources & methods

Term ended no later than Mar 23, 2023 · Low confidence

USPTO later recorded it as expired for non-payment on Oct 13, 2025.

Held by Senorx, Inc.
Filed Feb 8, 2007 as application 11/703,861 · Granted Sep 5, 2017
Base term plus 815 days of patent term adjustment (USPTO delay)
Today
20 years from filing
Ended no later than Mar 23, 2023
2000 2026
Clock starts
Dec 28, 2000
Ended no later than
Mar 23, 2023
Granted
Sep 5, 2017
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
815
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
1 of 1
Maintenance fees paid
One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it paid.
21
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 815 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. Confidence: Low. 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 Dec 28, 2000, when application 09/752,978, the earliest non-provisional in its chain, was filed (this one was filed Feb 8, 2007); a parent in its chain could not be resolved (the next row)Dec 28, 2020High confidence
Continuity chainA parent in the chain could not be resolveddated from this application's own claimMedium confidence
Patent term adjustment+815 days, USPTO patent term adjustment recordMar 23, 2023High confidence
Terminal disclaimer capDisclaimer on file (filed), reference document not resolvedno cap applied, and none guessedMedium confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events1 of 1 maintenance fees paidterm endedHigh confidence
USPTO status recordRecorded as expired for non-payment on Oct 13, 2025, after the term endedno changeHigh confidence
Computed term endThe steps above, in orderno later than Mar 23, 2023Low confidence

This family

US 7,175,618Term ended
no later than Dec 2020
no later than Dec 2020
Application 10/847,699Abandoned
not computed
not computed
US 8,133,218In force
no later than Mar 2028
no later than Mar 2028
Application PCT/US2006/046364PCT application
no patent term
no patent term
US 9,750,557this patent
no later than Mar 2023
no later than Mar 2023
US 8,764,741Term ended
Dec 2020
Dec 2020
US 8,652,121In force
Jun 2029
Jun 2029
US 8,696,650In force
May 2028
May 2028
8 of 21 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
Sep 21, 2010
Reel 25021, frame 259
Dabney, James Huntington; Quick, Richard L.; Sawicz, Conrad; Lubock, Paul; Kussman, DanSenorx, Inc.Assignment 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