Also listed on Surmodics, Inc., an earlier holder on the record. The recorded assignments below show how it moved.

Collateral for a security interest recorded Jan 21, 2026 (Bank of Montreal).

Term ends Sep 19, 2030 · High confidence

Computed 20-year base term

Held by Surmodics MD, LLC

Filed Mar 27, 2009 as application 12/383,751 · Granted Feb 10, 2015

Base term plus 541 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ends Sep 19, 2030

2009 2030

Clock starts
Mar 27, 2009

Term ends
Sep 19, 2030

Granted
Feb 10, 2015

base term patent term adjustment fee events Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know

541

Days of term adjustment

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

None

Terminal disclaimer

No disclaimer on this record.

2 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.

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 541 days past its 20-year base term on prosecution delay. 2 of 3 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 27, 2009, when this application, 12/383,751, was filed	Mar 27, 2029	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+541 days, USPTO patent term adjustment record	Sep 19, 2030	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	2 of 3 maintenance fees paid	In force	High confidence
Computed term end	The steps above, in order	Sep 19, 2030	High confidence

This family

Application 61/072,234	Provisional application no patent term	no patent term
US 8,951,545	this patent Sep 2030	Sep 2030
US 9,669,192	In force Mar 2029	Mar 2029
US 9,895,516	In force Mar 2029	Mar 2029
US 11,020,513	In force Mar 2029	Mar 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
Jun 3, 2009 Reel 22790, frame 761	Arps, James Howard; Bach, Andrew G.	Surmodics, Inc.	Assignment of Assignor's Interest
Aug 23, 2024 Reel 68762, frame 423	Surmodics, Inc.; Surmodics Shared Services, LLC; Surmodics Holdings, LLC; Surmodics Coatings, LLC; Surmodics MD, LLC; Surmodics Coatings MFG, LLC; Surmodics Ivd, Inc.; Surmodics MD Operations, LLC; Normedix, Inc.	Midcap Funding IV Trust	Security Interest
Nov 24, 2025 Reel 73690, frame 186	Midcap Funding IV Trust	Surmodics, Inc.; Surmodics Shared Services, LLC; Surmodics Holdings, LLC; Surmodics Coatings, LLC; Surmodics MD, LLC; Surmodics Coatings MFG, LLC; Surmodics Ivd, Inc.; Surmodics MD Operations, LLC; Normedix, Inc.	Release of Security Interest
Nov 24, 2025 reel/frame not recorded	Midcap Funding IV Trust	Surmodics, Inc.	Release of Security Interest
Nov 24, 2025 reel/frame not recorded	Midcap Funding IV Trust	Surmodics Shared Services, LLC	Release of Security Interest
Nov 24, 2025 reel/frame not recorded	Midcap Funding IV Trust	Surmodics Holdings, LLC	Release of Security Interest
Nov 24, 2025 reel/frame not recorded	Midcap Funding IV Trust	Surmodics Coatings, LLC	Release of Security Interest
Nov 24, 2025 reel/frame not recorded	Midcap Funding IV Trust	Surmodics MD, LLC	Release of Security Interest
Nov 24, 2025 reel/frame not recorded	Midcap Funding IV Trust	Surmodics Coatings MFG, LLC	Release of Security Interest
Nov 24, 2025 reel/frame not recorded	Midcap Funding IV Trust	Surmodics Ivd, Inc.	Release of Security Interest
Nov 24, 2025 reel/frame not recorded	Midcap Funding IV Trust	Surmodics MD Operations, LLC	Release of Security Interest
Nov 24, 2025 reel/frame not recorded	Midcap Funding IV Trust	Normedix, Inc.	Release of Security Interest
Dec 8, 2025 Reel 73894, frame 58	Surmodics, Inc.	Surmodics MD, LLC	Assignment of Assignor's Interest
Jan 21, 2026 Reel 74461, frame 199	Surmodics MD, LLC	Bank Of Montreal, As Collateral Agent	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

Sep 2030

Term ends Sep 19, 2030.

Note

The 541 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us

Citations

131

later US patents cite this one

That is top 5% 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.

In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.

Insertable medical devices having microparticulate-associated elastic substrates and methods for drug delivery