Term ends no later than Aug 9, 2039 · Medium confidence
20-year base term ends Aug 9, 2039
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.
Held by Pfizer Inc.
Filed Feb 17, 2023 as application 18/170,884 · Granted Dec 19, 2023
Base term, 20 years from filing
Today
2019
2039
Clock starts
Aug 9, 2019
Aug 9, 2019
Ends no later than
Aug 9, 2039
Aug 9, 2039
Granted
Dec 19, 2023
Dec 19, 2023
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
None
Term adjustment
No prosecution delay on this record.
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 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.
12
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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 0 of 3 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.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Aug 9, 2019, when application 16/537,394, the earliest non-provisional in its chain, was filed (this one was filed Feb 17, 2023) | Aug 9, 2039 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | no later than Aug 9, 2039 | Medium confidence |
This family
| US 10,590,087 | In force Aug 2039 | Aug 2039 |
| US 10,710,966 | In force Aug 2039 | Aug 2039 |
| US 10,941,118 | In force no later than Aug 2039 | no later than Aug 2039 |
| US 11,566,006 | In force Feb 2040 | Feb 2040 |
| US 11,884,634 | In force no later than Aug 2039 | no later than Aug 2039 |
| US 12,297,177 | In force Aug 2039 | Aug 2039 |
| US 11,820,748 | In force Aug 2039 | Aug 2039 |
| US 11,845,732 | this patent no later than Aug 2039 | no later than Aug 2039 |
8 of 12 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.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Jun 29, 2023 Reel 64119, frame 945 | Anderson, Stephen Richard; Greer, Elaine Mildred; Maloney, Mark Thomas; Yu, Shu | Pfizer Inc. | Assignment of Assignor's Interest |
| Jun 29, 2023 Reel 64119, frame 969 | Albert, Ekaterina; Rigsbee, Emily | Albany Molecular Research, Inc. and Its Corporate Affiliates | Assignment of Assignor's Interest |
| Jun 29, 2023 Reel 64178, frame 196 | Albany Molecular Research, Inc. and Its Corporate Affiliates | Pfizer 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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Alerts on its grants, lapses and transfers.
What's changing
Aug 2039
Term ends no later than Aug 9, 2039. Maintenance fees still fall due before then
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Aug 9, 2039. We will not guess the cap.
Citations
2
later US patents cite this one
That is above the median of utility patents granted in 2023 in our data, the only group it is compared against.
How we rank
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. Related patents and pending applications may cover overlapping subject matter.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.