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Articles of Poly(butylene Succinate) and Copolymers Thereof

US 11,844,879 In force
OverviewFamilyAssignmentsSources & methods

Term ends Jul 2, 2039 · High confidence

Held by Tepha, Inc.
Filed Apr 30, 2021 as application 17/245,573 · Granted Dec 19, 2023
Base term plus 123 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2019 2039
Clock starts
Mar 1, 2019
Term ends
Jul 2, 2039
Granted
Dec 19, 2023
base term patent term adjustment 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
123
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
0 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.
9
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 123 days past its 20-year base term on prosecution delay. 0 of 3 maintenance fees are paid so far. 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 1, 2019, when application 16/290,718, the earliest non-provisional in its chain, was filed (this one was filed Apr 30, 2021)Mar 1, 2039High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+123 days, USPTO patent term adjustment recordJul 2, 2039High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events0 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderJul 2, 2039High confidence

This family

Application 16/290,718Abandoned
not computed
not computed
US 12,151,050In force
Mar 2042
Mar 2042
Application 17/006,705Abandoned
not computed
not computed
Application 17/006,710Pending
not computed
not computed
US 10,994,057In force
Mar 2039
Mar 2039
US 11,844,879this patent
Jul 2039
Jul 2039
Application 17/497,800Pending
not computed
not computed
US 12,616,780In force
Mar 2039
Mar 2039
8 of 9 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
Jul 14, 2021
Reel 56856, frame 606
Williams, Simon F.; Rizk, Said; Martin, David P.; Limem, Skander; Guo, Kai; Lopez, German Oswaldo Hohl; Ganatra, AmitTepha, 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.

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