The Patent Finder
US

N4-phenyl-quinazoline-4 -amine derivatives and related compounds as ErbB type I receptor tyrosine kinase inhibitors for the treatment of hyperproliferative diseases

US 12,171,739 In force
OverviewAssignmentsSources & methods

Term ends Nov 15, 2026 · High confidence

Filed Sep 8, 2022 as application 17/940,902 · Granted Dec 24, 2024
Base term, 20 years from filing
Today
20 years from filing
2006 2026
Clock starts
Nov 15, 2006
Term ends
Nov 15, 2026
Granted
Dec 24, 2024
base term 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
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
None due
Maintenance fees
This term ends before the first maintenance fee's grace period does, 4 years from grant, so no fee can end it early.

This patent's term is its 20-year base term, with no adjustment for prosecution delay. No maintenance fee can end this term early. 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 Nov 15, 2006, when application PCT/US2006/044431, the earliest non-provisional in its chain, was filed (this one was filed Sep 8, 2022)Nov 15, 2026High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee eventsNo maintenance fee can end the term earlyIn forceHigh confidence
Computed term endThe steps above, in orderNov 15, 2026High confidence

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
Oct 25, 2022
Reel 61529, frame 93
Lyssikatos, Joseph P.; Hicks, Julie Marie; Marmsater, Fredrik P.; Zhao, QianArray Biopharma 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