Also listed on Pfizer Products Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Nov 23, 2027 · High confidence
20-year base term ends Nov 23, 2027
Held by Zoetis Services LLC
Filed Jun 24, 2020 as application 16/910,284 · Granted Dec 13, 2022
Base term, 20 years from filing
Today
2007
2027
Clock starts
Nov 23, 2007
Nov 23, 2007
Term ends
Nov 23, 2027
Nov 23, 2027
Granted
Dec 13, 2022
Dec 13, 2022
base term
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 11,524,067, to Nov 23, 2027. The term already ends on or before that date, so the cap shortened nothing.
1 of 1
Maintenance fees paid
One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it paid.
5
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 resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 1 of 1 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 Nov 23, 2007, when application PCT/IB2007/003666, the earliest non-provisional in its chain, was filed (this one was filed Jun 24, 2020) | Nov 23, 2027 | 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 resolved from the filed document (refs US 11,524,067) | resolves to Nov 23, 2027, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 1 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Nov 23, 2027 | High confidence |
This family
| Application 12/521,148 | Abandoned not computed | not computed |
| US 11,524,067 | In force Nov 2027 | Nov 2027 |
| US 11,524,068 | this patent Nov 2027 | Nov 2027 |
| US 12,290,559 | In force Apr 2028 | Apr 2028 |
4 of 5 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 1, 2025 Reel 70696, frame 875 | Tucker, Cassius M.; Haworth, John D. | Pfizer Inc.; Pfizer Products Inc. | Assignment of Assignor's Interest |
| Apr 1, 2025 Reel 70703, frame 536 | Pfizer Inc. | Ah USA 42 LLC | Assignment of Assignor's Interest |
| Apr 1, 2025 Reel 70703, frame 682 | Zoetis LLC | Zoetis Services LLC | Assignment of Assignor's Interest |
| Apr 1, 2025 Reel 70703, frame 827 | Zoetis Services LLC | Zoetis Services LLC | Address Change of Assignee |
| Apr 1, 2025 Reel 70704, frame 293 | Ah USA 42 LLC | Zoetis LLC | Change of Name |
| Apr 1, 2025 Reel 70735, frame 316 | Tucker, Cassius M.; Haworth, John D. | Pfizer Inc. | Corrective Assignment to Correct the Remove Assignee Previously Recorded at Reel: 18792 Frame: 428. Assignor(S) Hereby Confirms the Assignment. |
| Apr 1, 2025 reel/frame not recorded | Haworth, John D.; Tucker, Cassius M. | Pfizer Inc. | Assignment of Assignor's Interest |
| Apr 1, 2025 reel/frame not recorded | Haworth, John D.; Tucker, Cassius M. | Pfizer Products 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.
What's changing
Nov 2027
Term ends Nov 23, 2027. No further fees fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 11,524,067, ends no earlier than this term, so it caps nothing.
Citations
0
later US patents cite this one
That is below the median of utility patents granted in 2022 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.