Term ends Mar 28, 2033 · Medium confidence
20-year base term ends Mar 28, 2033
Why Medium: A parent in the chain could not be resolved.
Held by Windtree Therapeutics, Inc.
Filed Nov 27, 2013 as application 14/091,608 · Granted Jun 10, 2014
Base term, 20 years from filing
Today
2013
2033
Clock starts
Mar 28, 2013
Mar 28, 2013
Term ends
Mar 28, 2033
Mar 28, 2033
Granted
Jun 10, 2014
Jun 10, 2014
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 8,748,397, to Mar 28, 2033. The term already ends on or before that date, so the cap shortened nothing.
3 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.
14
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. All three maintenance fees are recorded paid; no more fees are due. 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 Mar 28, 2013, when application PCT/US2013/034364, the earliest non-provisional in its chain, was filed (this one was filed Nov 27, 2013); a parent in its chain could not be resolved (the next row) | Mar 28, 2033 | 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 8,748,397) | resolves to Mar 28, 2033, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Mar 28, 2033 | Medium confidence |
This family
| US 7,582,312 | Lapsed on the fee record Sep 2017 | Sep 2017 |
| Application PCT/US2005/041281 | PCT application no patent term | no patent term |
| US 8,337,815 | Lapsed on the fee record Dec 2016 | Dec 2016 |
| Application PCT/US2005/046862 | PCT application no patent term | no patent term |
| US 7,541,331 | Term ended Jan 2026 | Jan 2026 |
| US 8,221,772 | In force Sep 2027 | Sep 2027 |
| Application PCT/US2013/039592 | PCT application no patent term | no patent term |
| US 8,748,396 | this patent Mar 2033 | Mar 2033 |
8 of 14 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 25, 2014 reel/frame not recorded | Cesco-cancian, Sergio; Hoy, Thomas; Thomas, Michael S; Trappler, Edward H | Discovery Laboratories, Inc. | Assignment of Assignor's Interest |
| Apr 25, 2014 Reel 32758, frame 761 | Cesco-cancian, Sergio; Hoy, Thomas; Trappler, Edward H; Thomas, Michael S | Discovery Laboratories, Inc.; Discovery Laboratories, Inc. | Assignment of Assignor's Interest |
| May 4, 2016 Reel 38606, frame 468 | Discovery Laboratories, Inc. | Windtree Therapeutics, Inc. | Change of Name |
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
Mar 2033
Term ends Mar 28, 2033. No further fees fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,748,397, ends no earlier than this term, so it caps nothing.
Citations
4
later US patents cite this one
That is below the median of utility patents granted in 2014 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.