Collateral for a security interest recorded Aug 12, 2025 (Wilmington Trust, National Association).

Term ended Oct 31, 2025 · High confidence

Computed 20-year base term

Held by MannKind Corporation

Filed Apr 17, 2010 as application 12/762,307 · Granted Sep 8, 2015

Base term plus 556 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ended Oct 31, 2025

2004 2026

Clock starts
Apr 23, 2004

Term ended
Oct 31, 2025

Granted
Sep 8, 2015

base term patent term adjustment 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

556

Days of term adjustment

Read from the USPTO patent term adjustment record, not recalculated here.

No effect

Terminal disclaimer

Resolved from the filed document, referencing US 9,072,828, to Oct 31, 2025. The term already ends on or before that date, so the cap shortened nothing.

2 of 2

Maintenance fees paid

Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.

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 556 days past its 20-year base term on prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 Apr 23, 2004, when application 10/831,354, the earliest non-provisional in its chain, was filed (this one was filed Apr 17, 2010)	Apr 23, 2024	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+556 days, USPTO patent term adjustment record	Oct 31, 2025	High confidence
Terminal disclaimer cap	Disclaimer resolved from the filed document (refs US 9,072,828)	resolves to Oct 31, 2025, no earlier than this term, so no change	High confidence
Patent term extension	None on file	no change	High confidence
Fee events	2 of 2 maintenance fees paid	term ended	High confidence
Computed term end	The steps above, in order	Oct 31, 2025	High confidence

This family

US 7,530,968	Term ended Jun 2024	Jun 2024
US 8,070,726	Term ended Jun 2024	Jun 2024
US 9,072,828	In force Jul 2027	Jul 2027
US 9,125,983	this patent Oct 2025	Oct 2025
US 9,511,187	Term ended Apr 2024	Apr 2024
US 10,525,194	Term ended Apr 2024	Apr 2024
US 11,642,456	Term ended Nov 2024	Nov 2024

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 17, 2010 Reel 24249, frame 1	Gonnelli, Robert R.; McAllister, Devin V.; Levesque, Steven F.	Biovalve Technologies, Inc.	Assignment of Assignor's Interest
Apr 17, 2010 Reel 24249, frame 6	Biovalve Technologies, Inc.	Valeritas, LLC	Assignment of Assignor's Interest
Apr 17, 2010 Reel 24249, frame 16	Valeritas, LLC	Valeritas, Inc.	Change of Name
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
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
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

Note

The 556 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us

Terminal disclaimer

A terminal disclaimer resolved from the filed document, referencing US 9,072,828, ends no earlier than this term, so it caps nothing.

Citations

later US patents cite this one

That is below the median of utility patents granted in 2015 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.

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