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High Efficiency Intersubband Semiconductor Lasers

US 7,403,552 Term ended
OverviewFamilyAssignmentsSources & methods

Term ended Jun 7, 2026 · High confidence

Filed Mar 10, 2006 as application 11/276,712 · Granted Jul 22, 2008
Base term plus 89 days of patent term adjustment (USPTO delay)
Today
20 years from filing
Term ended Jun 7, 2026
2006 2026
Clock starts
Mar 10, 2006
Term ended
Jun 7, 2026
Granted
Jul 22, 2008
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
89
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.
43
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 89 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 Mar 10, 2006, when this application, 11/276,712, was filedMar 10, 2026High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+89 days, USPTO patent term adjustment recordJun 7, 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 orderJun 7, 2026High confidence

This family

US 7,403,552this patent
Jun 2026
Jun 2026
Application PCT/US2006/028365PCT application
no patent term
no patent term
Application PCT/US2006/028367PCT application
no patent term
no patent term
Application PCT/US2006/028368PCT application
no patent term
no patent term
Application 11/491,057Abandoned
not computed
not computed
Application PCT/US2006/061815PCT application
no patent term
no patent term
Application PCT/US2006/062357PCT application
no patent term
no patent term
Application PCT/US2006/062569PCT application
no patent term
no patent term
8 of 43 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
Apr 7, 2006
Reel 17441, frame 896
Botez, Dan; Xu, Dapeng P.; Mawst, Luke J.Wisconsin Alumni Research FoundationAssignment 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.

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