Term ended Jan 6, 2026 · High confidence
20-year base term ended Jan 6, 2026
Held by Windtree Therapeutics, Inc.
Filed Jan 6, 2006 as application 11/326,885 · Granted Jun 2, 2009
Base term, 20 years from filing
Today
Term ended Jan 6, 2026
2006
2026
Clock starts
Jan 6, 2006
Jan 6, 2006
Term ended
Jan 6, 2026
Jan 6, 2026
Granted
Jun 2, 2009
Jun 2, 2009
base term
after the term ends
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.
None
Terminal disclaimer
No disclaimer on this record.
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. All three maintenance fees were paid, so no fee lapse ended it. 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 Jan 6, 2006, when this application, 11/326,885, was filed | Jan 6, 2026 | 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 | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | Jan 6, 2026 | High 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 | this patent 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 | In force 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 |
|---|---|---|---|
| May 10, 2006 Reel 17608, frame 501 | Killian, Anthony; Schaber, Christopher; Segal, Robert; Guardia, Carlos | Discovery Laboratories, Inc. | Assignment of Assignor's Interest |
| Nov 2, 2006 Reel 18468, frame 530 | Discovery Laboratories, Inc. | Pharmabio Development Inc. | Security Agreement |
| May 31, 2007 Reel 19362, frame 608 | Discovery Laboratories, Inc. | Merrill Lynch Capital | Security Agreement |
| Jan 4, 2012 Reel 27478, frame 256 | Pharmabio Development Inc. | Discovery Laboratories, Inc. | Release of Security Interest |
| Jan 24, 2012 Reel 27585, frame 653 | GE Business Financial Services, Inc. | Discovery Laboratories, Inc. | Release of Security 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.
Citations
10
later US patents cite this one
That is below the median of utility patents granted in 2009 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.