Also listed on Embolitech, LLC, 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 Aug 6, 2031 · High confidence
20-year base term ends May 14, 2028
Held by Surmodics MD, LLC
Filed May 14, 2008 as application 12/152,367 · Granted Oct 6, 2015
Base term plus 1179 days of patent term adjustment (USPTO delay)
Today
2008
2031
Clock starts
May 14, 2008
May 14, 2008
Term ends
Aug 6, 2031
Aug 6, 2031
Granted
Oct 6, 2015
Oct 6, 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
1,179
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.
This patent's term runs 1179 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 May 14, 2008, when this application, 12/152,367, was filed | May 14, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1179 days, USPTO patent term adjustment record | Aug 6, 2031 | 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 | Aug 6, 2031 | High confidence |
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 |
|---|---|---|---|
| May 14, 2008 Reel 20991, frame 802 | Ansel, Gary M.; Bonnette, Michael J.; Thor, Eric J.; Morris, David B.; Weisel, Stephen E. | Possis Medical, Inc. | Assignment of Assignor's Interest |
| Jan 7, 2009 Reel 22062, frame 848 | Possis Medical, Inc. | Medrad, Inc. | Merger |
| Aug 18, 2010 Reel 24850, frame 279 | Medrad, Inc. | Embolitech, LLC | Assignment of Assignor's Interest |
| Nov 17, 2010 Reel 25382, frame 147 | Embolitech, LLC, a District of Columbia Limited Liability Company | Embolitech, LLC, a Texas Limited Liability Company | Merger |
| Feb 14, 2012 Reel 27906, frame 508 | Gore Enterprise Holdings, Inc. | W. L. Gore & Associates, Inc. | Assignment of Assignor's Interest |
| Oct 29, 2013 Reel 31496, frame 215 | Gore Enterprise Holdings, Inc. | Embolitech, LLC | Assignment of Assignor's Interest |
| Nov 12, 2013 Reel 31583, frame 248 | W. L. Gore & Associates, Inc. | Embolitech, LLC | Assignment of Assignor's Interest |
| Jun 5, 2018 Reel 45992, frame 253 | Embolitech, LLC | Surmodics MD, LLC | 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
Aug 2031
Term ends Aug 6, 2031. Maintenance fees still fall due before then
Note
The 1179 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
353
later US patents cite this one
That is top 1% 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.