Term ends Feb 3, 2040 · High confidence
20-year base term ends Aug 9, 2039
Held by Pfizer Inc.
Filed Feb 19, 2021 as application 17/180,296 · Granted Jan 31, 2023
Base term plus 178 days of patent term adjustment (USPTO delay)
Today
2019
2040
Clock starts
Aug 9, 2019
Aug 9, 2019
Term ends
Feb 3, 2040
Feb 3, 2040
Granted
Jan 31, 2023
Jan 31, 2023
base term
patent term adjustment
fee events
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
178
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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 runs 178 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is 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.
| 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 19, 2021) | Aug 9, 2039 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +178 days, USPTO patent term adjustment record | Feb 3, 2040 | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Feb 3, 2040 | High 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 | this patent 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 | In force 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 |
|---|---|---|---|
| Apr 2, 2021 Reel 55810, frame 111 | Greer, Elaine Mildred; Anderson, Stephen Richard; Maloney, Mark Thomas; Yu, Shu | Pfizer Inc. | Assignment of Assignor's Interest |
| Apr 2, 2021 Reel 55810, frame 126 | Albert, Ekaterina; Rigsbee, Emily | Albany Molecular Research, Inc. and Its Corporate Affiliates | Assignment of Assignor's Interest |
| Apr 2, 2021 Reel 55816, frame 456 | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Feb 2040
Term ends Feb 3, 2040. Maintenance fees still fall due before then
Note
The 178 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
10
later US patents cite this one
That is top 10% 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
Computed patent terms end on the dates shown. 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.