Also listed on Cook Incorporated, an earlier holder on the record. The recorded assignments below show how it moved.
Collateral for a security interest recorded Sep 25, 2025 (Golub Capital Markets LLC).
Term ends Jun 1, 2029 · Medium confidence
20-year base term ended Apr 29, 2026
Why Medium: A parent in the chain could not be resolved.
Held by Cook Biotech Incorporated
Filed May 1, 2006 as application 11/415,403 · Granted Feb 21, 2017
Base term plus 1129 days of patent term adjustment (USPTO delay)
Today
2006
2029
Clock starts
Apr 29, 2006
Apr 29, 2006
Term ends
Jun 1, 2029
Jun 1, 2029
Granted
Feb 21, 2017
Feb 21, 2017
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
1,129
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.
6
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 1129 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are paid so far. 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 Apr 29, 2006, when application PCT/US2006/016748, the earliest non-provisional in its chain, was filed (this one was filed May 1, 2006); a parent in its chain could not be resolved (the next row) | Apr 29, 2026 | 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 | +1129 days, USPTO patent term adjustment record | Jun 1, 2029 | 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 | Jun 1, 2029 | Medium confidence |
This family
| US 9,572,556 | this patent Jun 2029 | Jun 2029 |
| US 9,687,215 | In force Apr 2029 | Apr 2029 |
| US 9,226,736 | In force Feb 2027 | Feb 2027 |
| US 9,456,813 | In force Jun 2027 | Jun 2027 |
| US 11,064,987 | In force Jun 2027 | Jun 2027 |
5 of 6 applications in this family shown, earliest filings first. 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 |
|---|---|---|---|
| Feb 27, 2008 Reel 20570, frame 912 | Hiles, Michael C. | Cook Biotech Incorporated | Assignment of Assignor's Interest |
| Feb 27, 2008 Reel 20570, frame 949 | Obermiller, F. Joseph; Graham, Matthew R. | Cook Incorporated | Assignment of Assignor's Interest |
| Mar 3, 2008 Reel 20590, frame 216 | Cook Incorporated | 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
Jun 2029
Term ends Jun 1, 2029. Maintenance fees still fall due before then
Note
The 1129 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
94
later US patents cite this one
That is top 5% of utility patents granted in 2017 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.