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Compound, Material for Organic Electroluminescent Elements, Organic Electroluminescent Element, and Electronic Device

US 12,643,856 In force, term unresolved
OverviewFamilySources & methods

Term ends no later than Jun 27, 2034 · Low confidence

In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.

Filed Jul 31, 2024 as application 18/790,174 · Granted Jun 2, 2026
Base term plus 1 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2014 2034
Clock starts
Jun 26, 2014
Ends no later than
Jun 27, 2034
Granted
Jun 2, 2026
base term Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
1
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.
0 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
7
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 1 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. 0 of 2 maintenance fees are paid so far. 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 Jun 26, 2014, when application PCT/JP2014/067065, the earliest non-provisional in its chain, was filed (this one was filed Jul 31, 2024); a parent in its chain could not be resolved (the next row)Jun 26, 2034High confidence
Continuity chainA parent in the chain could not be resolveddated from this application's own claimMedium confidence
Patent term adjustment+1 days, USPTO patent term adjustment recordJun 27, 2034High confidence
Terminal disclaimer capDisclaimer on file (approved), reference document not resolvedno cap applied, and none guessedMedium confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events0 of 2 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderno later than Jun 27, 2034Low confidence

This family

US 10,590,080In force
Aug 2035
Aug 2035
US 10,851,055In force
Jun 2034
Jun 2034
US 11,059,781In force
no later than Jun 2034
no later than Jun 2034
US 11,739,061In force
no later than Jul 2034
no later than Jul 2034
US 12,077,500In force
no later than Jun 2034
no later than Jun 2034
US 12,643,856this patent
no later than Jun 2034
no later than Jun 2034
6 of 7 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.

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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