Lapsed Dec 25, 2016 on the fee record · High confidence
20-year base term ended Dec 21, 2025
First maintenance fee unpaid; grace period ended.
Held by Windtree Therapeutics, Inc.
Filed Dec 21, 2005 as application 11/316,308 · Granted Dec 25, 2012
Base term, 20 years from filing, plus 1195 days of patent term adjustment (USPTO delay)
Today
Lapsed Dec 25, 2016
2005
2029
Clock starts
Dec 21, 2005
Dec 21, 2005
No longer in force
Dec 25, 2016
Dec 25, 2016
Granted
Dec 25, 2012
Dec 25, 2012
Term would have run to
Mar 30, 2029
Mar 30, 2029
base term
patent term adjustment
after the term ends
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
1,195
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
0 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.
Its term would have run to Mar 30, 2029: its 20-year base term plus 1195 days of term adjustment for prosecution delay. 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 Dec 21, 2005, when this application, 11/316,308, was filed | Dec 21, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1195 days, USPTO patent term adjustment record | Mar 30, 2029 | 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 | 0 of 3 maintenance fees paid | lapsed Dec 25, 2016 | High confidence |
| Computed term end | The steps above, in order | Dec 25, 2016 | 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 | this patent 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 | 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 |
|---|---|---|---|
| Nov 2, 2006 Reel 18468, frame 530 | Discovery Laboratories, Inc. | Pharmabio Development Inc. | Security Agreement |
| Apr 11, 2007 Reel 19150, frame 274 | Rairkar, Maithili; Eliaz, Rom; Niven, Ralph; Johnson, Mark E. | Discovery Laboratories, Incorporated | Assignment of Assignor's Interest |
| 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.
What's changing
Note
The 1195 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
29
later US patents cite this one
That is top 25% of utility patents granted in 2012 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.