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 Mar 28, 2027 · High confidence
20-year base term ends Mar 28, 2027
Held by MannKind Corporation
Filed Sep 29, 2008 as application 12/295,173 · Granted Mar 29, 2011
Base term, 20 years from filing
Today
2007
2027
Clock starts
Mar 28, 2007
Mar 28, 2007
Term ends
Mar 28, 2027
Mar 28, 2027
Granted
Mar 29, 2011
Mar 29, 2011
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.
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.
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 is its 20-year base term, with no adjustment for prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Sep 29, 2008) | Mar 28, 2027 | 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 | In force | High confidence |
| Computed term end | The steps above, in order | Mar 28, 2027 | High confidence |
This family
| Application PCT/US2007/065363 | PCT application no patent term | no patent term |
| US 7,914,499 | this patent 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 | In force 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 |
|---|---|---|---|
| Oct 30, 2008 Reel 21761, frame 492 | Gonnelli, Robert; Levesque, Steven F.; Nardi, Ronald V. | Biovalve Technologies, Inc. | Assignment of Assignor's Interest |
| Oct 30, 2008 Reel 21761, frame 536 | Biovalve Technologies, Inc. | Valeritas, LLC. | Assignment of Assignor's Interest |
| May 28, 2013 Reel 30497, frame 800 | Valeritas, Inc. | Capital Royalty Partners II L.P.; Capital Royalty Partners II - Parallel Fund "a" L.P.; Parallel Investment Opportunities Partners II L.P. | Short-Form Patent Security Agreement |
| May 28, 2013 reel/frame not recorded | Valeritas, Inc. | Capital Royalty Partners II L.P. | Short-Form Patent Security Agreement |
| May 28, 2013 reel/frame not recorded | Valeritas, Inc. | Capital Royalty Partners II - Parallel Fund "a" L.P. | Short-Form Patent Security Agreement |
| May 28, 2013 reel/frame not recorded | Valeritas, Inc. | Parallel Investment Opportunities Partners II L.P. | Short-Form Patent Security Agreement |
| Jun 6, 2020 Reel 52859, frame 390 | Valeritas, Inc. | Zealand Pharma A/S | Assignment of Assignor's Interest |
| Dec 27, 2021 Reel 58593, frame 261 | Zealand Pharma A/S | Zoolander S.A. LLC | Patent Security Agreement |
| 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 |
| May 17, 2023 Reel 63672, frame 342 | Zoolander S.A. LLC | Zealand Pharma A/S | Release of Security Interest |
| Aug 12, 2025 Reel 72444, frame 525 | MannKind Corporation | Wilmington Trust, National Association, as Collateral Agent | Patent Security Agreement |
| Aug 18, 2025 Reel 72509, frame 386 | Capital Royalty Partners II L.P.; Capital Royalty Partners II - Parallel Fund "a" L.P.; Parallel Investment Opportunities Partners II L.P. | Zealand Pharma A/S | Sale Order / Release of Security 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
Mar 2027
Term ends Mar 28, 2027. No further fees fall due before then
Citations
131
later US patents cite this one
That is top 5% of utility patents granted in 2011 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.