Also listed on Biovalve Technologies, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Collateral for a security interest recorded Aug 12, 2025 (Wilmington Trust, National Association).
Term ends May 19, 2029 · High confidence
20-year base term ends Mar 28, 2027
Held by MannKind Corporation
Filed Oct 1, 2021 as application 17/491,949 · Granted Mar 11, 2025
Base term plus 783 days of patent term adjustment (USPTO delay)
Today
2007
2029
Clock starts
Mar 28, 2007
Mar 28, 2007
Term ends
May 19, 2029
May 19, 2029
Granted
Mar 11, 2025
Mar 11, 2025
base term
patent term adjustment
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
783
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 1
Maintenance fees paid
One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it paid.
8
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 783 days past its 20-year base term on prosecution delay. 0 of 1 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 Mar 28, 2007, when application PCT/US2007/065363, the earliest non-provisional in its chain, was filed (this one was filed Oct 1, 2021) | Mar 28, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +783 days, USPTO patent term adjustment record | May 19, 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 1 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | May 19, 2029 | High confidence |
This family
| Application PCT/US2007/065363 | PCT application no patent term | no patent term |
| US 7,914,499 | In force Mar 2027 | Mar 2027 |
| US 8,361,053 | In force Mar 2027 | Mar 2027 |
| US 8,821,443 | Lapsed on the fee record Sep 2026 | Sep 2026 |
| US 9,687,599 | In force Mar 2028 | Mar 2028 |
| US 10,493,199 | In force Mar 2027 | Mar 2027 |
| Application 16/655,036 | Abandoned not computed | not computed |
| US 12,246,159 | this patent May 2029 | May 2029 |
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 29, 2021 Reel 58229, frame 618 | Gonnelli, Robert; Levesque, Steven F.; Nardi, Ronald V. | Biovalve Technologies, Inc. | Assignment of Assignor's Interest |
| Nov 29, 2021 Reel 58229, frame 956 | Biovalve Technologies, Inc. | Valeritas, LLC | Assignment of Assignor's Interest |
| Nov 29, 2021 Reel 58230, frame 530 | Valeritas, Inc. | Zealand Pharma A/S | Assignment of Assignor's Interest |
| Nov 29, 2021 Reel 58264, frame 751 | Valeritas LLC | Valeritas, Inc. | Change of Name |
| Aug 24, 2022 Reel 60887, frame 685 | Zoolander S.A. LLC | Zealand Pharma A/S | Release of Security Interest |
| Sep 2, 2022 Reel 60984, frame 295 | Zealand Pharma A/S | MannKind Corporation | Assignment of Assignor's Interest |
| Aug 12, 2025 Reel 72444, frame 525 | MannKind Corporation | Wilmington Trust, National Association, as Collateral Agent | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
May 2029
Term ends May 19, 2029. Maintenance fees still fall due before then
Note
The 783 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
0
later US patents cite this one
Fewer than half of the utility patents granted in 2025 in our data have been cited yet, so we show the count and do not rank on it.
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.