Collateral for a security interest recorded Apr 17, 2026 (Citibank, N.A.).
Term ends Aug 30, 2027 · Medium confidence
20-year base term ends Aug 30, 2027
Why Medium: A parent in the chain could not be resolved.
Held by FMC Corporation
Filed Sep 23, 2015 as application 14/862,892 · Granted May 15, 2018
Base term, 20 years from filing
Today
2007
2027
Clock starts
Aug 30, 2007
Aug 30, 2007
Term ends
Aug 30, 2027
Aug 30, 2027
Granted
May 15, 2018
May 15, 2018
base term
fee events
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.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,475,818, to Aug 30, 2027. The term already ends on or before that date, so the cap shortened nothing.
2 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.
4
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. 2 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.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Aug 30, 2007, when application PCT/US2007/019096, the earliest non-provisional in its chain, was filed (this one was filed Sep 23, 2015); a parent in its chain could not be resolved (the next row) | Aug 30, 2027 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,475,818) | resolves to Aug 30, 2027, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Aug 30, 2027 | Medium confidence |
This family
| US 8,475,818 | In force Nov 2029 | Nov 2029 |
| US 9,968,617 | this patent Aug 2027 | Aug 2027 |
2 of 4 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 |
|---|---|---|---|
| Oct 26, 2016 Reel 40141, frame 922 | Freehauf, Keith Alan; O'neill, Peter Andrew; Sargent, Roger Mervyn; Simmons, Robert D.; Guerino, Frank; Wang, Chen-chao | Schering-Plough Animal Health Corporation | Assignment of Assignor's Interest |
| Oct 26, 2016 Reel 40142, frame 196 | Schering-Plough Animal Health Corporation | E.I. du Pont de Nemours and Company | Assignment of Assignor's Interest |
| Jul 17, 2018 Reel 46732, frame 16 | E.I. du Pont de Nemours and Company | FMC Corporation | Assignment of Assignor's Interest |
| Apr 17, 2026 Reel 75403, frame 891 | FMC Corporation | Citibank, N.a. | Patent Security Agreement |
| Jun 5, 2026 Reel 75820, frame 557 | FMC Corporation | U.S. Bank Trust Company, National Association | Patent Security Agreement |
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 2027
Term ends Aug 30, 2027. No further fees fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,475,818, 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 2018 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.