Term ends Aug 25, 2029 · Medium confidence
20-year base term ended Oct 20, 2026
Why Medium: A parent in the chain could not be resolved.
Held by University of Notre Dame
Filed Jan 30, 2007 as application 11/699,448 · Granted Apr 12, 2016
Base term plus 1040 days of patent term adjustment (USPTO delay)
Today
2006
2029
Clock starts
Oct 20, 2006
Oct 20, 2006
Term ends
Aug 25, 2029
Aug 25, 2029
Granted
Apr 12, 2016
Apr 12, 2016
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
1,040
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.
9
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 1040 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 Oct 20, 2006, when application 11/583,771, the earliest non-provisional in its chain, was filed (this one was filed Jan 30, 2007); a parent in its chain could not be resolved (the next row) | Oct 20, 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 | +1040 days, USPTO patent term adjustment record | Aug 25, 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 | Aug 25, 2029 | Medium confidence |
This family
| US 8,778,360 | Term ended Oct 2026 | Oct 2026 |
| US 9,308,252 | this patent Aug 2029 | Aug 2029 |
| US 9,220,770 | In force Feb 2027 | Feb 2027 |
| US 8,778,362 | In force Mar 2028 | Mar 2028 |
| US 10,174,382 | In force Mar 2036 | Mar 2036 |
| US 10,457,716 | In force Dec 2036 | Dec 2036 |
| Application PCT/US2015/047052 | PCT application no patent term | no patent term |
| Application 15/506,713 | Abandoned not computed | not computed |
8 of 9 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 |
|---|---|---|---|
| Sep 5, 2008 Reel 21488, frame 706 | Hall, Paul | Cook Biotech, Inc. | Assignment of Assignor's Interest |
| Feb 11, 2009 Reel 22239, frame 341 | Suckow, Mark A.; Wolter, William R. | University of Notre Dame | 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 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.
What's changing
Aug 2029
Term ends Aug 25, 2029. Maintenance fees still fall due before then
Note
The 1040 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
43
later US patents cite this one
That is top 10% of utility patents granted in 2016 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.