Term ends Dec 10, 2032 · High confidence
20-year base term ends Nov 19, 2032
Held by Windtree Therapeutics, Inc.
Filed May 22, 2014 as application 14/285,007 · Granted Mar 28, 2017
Base term plus 21 days of patent term adjustment (USPTO delay)
Today
2012
2032
Clock starts
Nov 19, 2012
Nov 19, 2012
Term ends
Dec 10, 2032
Dec 10, 2032
Granted
Mar 28, 2017
Mar 28, 2017
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
21
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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.
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 runs 21 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are 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 19, 2012, when application PCT/US2012/065831, the earliest non-provisional in its chain, was filed (this one was filed May 22, 2014) | Nov 19, 2032 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +21 days, USPTO patent term adjustment record | Dec 10, 2032 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 10, 2032 | High confidence |
This family
| Application PCT/US2012/065831 | PCT application no patent term | no patent term |
| US 9,604,994 | this patent Dec 2032 | Dec 2032 |
| US 10,183,950 | In force Nov 2032 | Nov 2032 |
| US 10,954,251 | In force Nov 2032 | Nov 2032 |
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 |
|---|---|---|---|
| Jul 21, 2014 Reel 33349, frame 530 | Dorsey, Bruce D.; Learn, Keith S.; Morris, Emma L.; Ott, Gregory R.; Roffey, Jonathan R.a.; Soudy, Christelle N.; Wagner, Jason C. | Cancer Research Technology Limited; Cephalon, Inc. | Assignment of Assignor's Interest |
| Jul 21, 2014 reel/frame not recorded | Dorsey, Bruce D.; Ott, Gregory R.; Wagner, Jason C.; Learn, Keith S.; Morris, Emma L.; Roffey, Jonathan R.a.; Soudy, Christelle N. | Cancer Research Technology Limited | Assignment of Assignor's Interest |
| Jul 21, 2014 reel/frame not recorded | Dorsey, Bruce D.; Ott, Gregory R.; Wagner, Jason C.; Learn, Keith S.; Morris, Emma L.; Roffey, Jonathan R.a.; Soudy, Christelle N. | Cephalon, Inc. | Assignment of Assignor's Interest |
| Mar 17, 2015 Reel 35186, frame 151 | Cephalon, Inc. | Ignyta, Inc. | Assignment of Assignor's Interest |
| Jan 13, 2017 Reel 40964, frame 825 | Ignyta, Inc. | Cancer Research Technology Limited | Assignment of Assignor's Interest |
| Oct 15, 2024 Reel 69171, frame 875 | Varian Biopharmaceuticals, Inc. | Windtree Therapeutics, 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
Dec 2032
Term ends Dec 10, 2032. Maintenance fees still fall due before then
Note
The 21 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
12
later US patents cite this one
That is above the median of utility patents granted in 2017 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.