Collateral for a security interest recorded Sep 25, 2025 (Golub Capital Markets LLC).
Term ended Nov 8, 2025 · Medium confidence
20-year base term ended Feb 17, 2025
Why Medium: A parent in the chain could not be resolved.
Held by Cook Biotech Incorporated
Filed Dec 18, 2019 as application 16/718,396 · Granted Feb 21, 2023
Base term plus 264 days of patent term adjustment (USPTO delay)
Today
Term ended Nov 8, 2025
2005
2026
Clock starts
Feb 17, 2005
Feb 17, 2005
Term ended
Nov 8, 2025
Nov 8, 2025
Granted
Feb 21, 2023
Feb 21, 2023
base term
patent term adjustment
after the term ends
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
264
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
None due
Maintenance fees
This term ends before the first maintenance fee's grace period does, 4 years from grant, so no fee can end it early.
4
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 264 days past its 20-year base term on prosecution delay. Confidence: Medium. 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 Feb 17, 2005, when application 11/060,078, the earliest non-provisional in its chain, was filed (this one was filed Dec 18, 2019); a parent in its chain could not be resolved (the next row) | Feb 17, 2025 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +264 days, USPTO patent term adjustment record | Nov 8, 2025 | 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 | No maintenance fee can end the term early | term ended | High confidence |
| Computed term end | The steps above, in order | Nov 8, 2025 | Medium confidence |
This family
| US 8,920,443 | In force Dec 2028 | Dec 2028 |
| US 9,186,140 | In force Dec 2026 | Dec 2026 |
| US 10,512,463 | Term ended Jan 2026 | Jan 2026 |
| US 11,583,276 | this patent Nov 2025 | Nov 2025 |
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 |
|---|---|---|---|
| Dec 18, 2019 Reel 51315, frame 808 | Hiles, Michael C.; Patel, Umesh H.; Shah, Bhavin; McAlexander, Chad S. | Cook Biotech Incorporated | Assignment of Assignor's Interest |
| Apr 3, 2024 Reel 67001, frame 541 | Cook Biotech Incorporated | Ares Capital Corporation, As Security Agent | Security Interest |
| Sep 25, 2025 Reel 72924, frame 721 | Rti Surgical, Inc.; Cook Biotech Incorporated; Tissx, LLC | Golub Capital Markets LLC, as Collateral Agent | Security Interest |
| Sep 25, 2025 Reel 72938, frame 231 | Ares Capital Corporation | Cook Biotech Incorporated | Termination and Release of Security Interest in Patents and Trademarks |
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 264 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
That is below the median of utility patents granted in 2023 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.