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US

Compositions Relating to a Mutant Clostridium Difficile Toxin and Methods Thereof

US 11,535,652 In force
OverviewFamilyAssignmentsSources & methods

Term ends Jul 1, 2032 · Medium confidence

Why Medium: A parent in the chain could not be resolved.

Held by Wyeth LLC
Filed Dec 5, 2019 as application 16/704,777 · Granted Dec 27, 2022
Base term plus 72 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2012 2032
Clock starts
Apr 20, 2012
Term ends
Jul 1, 2032
Granted
Dec 27, 2022
base term patent term adjustment 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
72
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 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.
13
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 72 days past its 20-year base term on prosecution delay. 0 of 2 maintenance fees are paid so far. Confidence: Medium. 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 Apr 20, 2012, when application 13/451,631, the earliest non-provisional in its chain, was filed (this one was filed Dec 5, 2019); a parent in its chain could not be resolved (the next row)Apr 20, 2032High confidence
Continuity chainA parent in the chain could not be resolveddated from this application's own claimMedium confidence
Patent term adjustment+72 days, USPTO patent term adjustment recordJul 1, 2032High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events0 of 2 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderJul 1, 2032Medium confidence

This family

US 8,481,692Surrendered on reissue
Dec 2021
Dec 2021
US 8,557,548Surrendered on reissue
Apr 2017
Apr 2017
US 8,900,597Surrendered on reissue
Aug 2017
Aug 2017
US 9,745,354In force
Apr 2032
Apr 2032
US 9,187,536Surrendered on reissue
Dec 2021
Dec 2021
US RE46,376In force
Apr 2032
Apr 2032
US RE46,518In force
Apr 2032
Apr 2032
US 10,774,117In force
Apr 2032
Apr 2032
8 of 13 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
Mar 27, 2023
Reel 63165, frame 455
Wyeth LLCWyeth LLCAssignee Address Correction

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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