Collateral for a security interest recorded Oct 19, 2026 (Bank of America).
Term ends Jan 31, 2031 · High confidence
20-year base term ends Jan 31, 2031
Held by Covidien LP
Filed Jan 31, 2011 as application 13/017,287 · Granted May 14, 2013
Base term, 20 years from filing
Today
2011
2031
Clock starts
Jan 31, 2011
Jan 31, 2011
Term ends
Jan 31, 2031
Jan 31, 2031
Granted
May 14, 2013
May 14, 2013
base term
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
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
3 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.
2
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 is its 20-year base term, with no adjustment for prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Jan 31, 2011, when this application, 13/017,287, was filed | Jan 31, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jan 31, 2031 | High confidence |
This family
| US 8,440,309 | this patent Jan 2031 | Jan 2031 |
| US 8,889,889 | In force Jan 2031 | Jan 2031 |
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 16, 2011 Reel 25816, frame 978 | Ohri, Rachit; Blaskovich, Phillip; Kennedy, Joshua; Bennett, Steven L.; Driscoll, Arthur | Confluent Surgical, Inc. | Assignment of Assignor's Interest |
| May 30, 2012 Reel 28284, frame 806 | Bennett, Steven L. | Tyco Healthcare Group LP | Assignment of Assignor's Interest |
| May 30, 2012 Reel 28284, frame 824 | Confluent Surgical, Inc. | Tyco Healthcare Group LP | Assignment of Assignor's Interest |
| Oct 2, 2012 Reel 29065, frame 448 | Tyco Healthcare Group LP | Covidien LP | Change of Name |
| Jan 14, 2014 Reel 31957, frame 239 | Confluent Surgical, Inc. | Covidien LP | Assignment of Assignor's Interest |
| Jan 17, 2014 Reel 32086, frame 749 | Covidien LP | Confluent Surgical, Inc. | Corrective Assignment to Correct the Assignor from Confluent Surgical, Inc. to Covidien LP and the Assignee from Covidien LP to Confluent Surgical, Inc. Previously Recorded on Reel 031957 Frame 0239. Assignor(S) Hereby Confirms the Correct Information Can Be Found on the Assignment of Patents Document. |
| Oct 19, 2026 Reel 76710, frame 116 | Acclarent, Inc.; Acell, Inc.; Confluent Surgical, Inc.; Integra Lifesciences Braintree Inc.; Integra Lifesciences Corporation; Surgical Innovation Associates, Inc. | Bank Of America, As Administrative Agent | Grant of Patent Security Interest |
| Oct 20, 2026 Reel 76737, frame 399 | Acclarent, Inc.; Acell, Inc.; Confluent Surgical, Inc.; Integra Lifesciences Braintree Inc.; Integra Lifesciences Corporation; Surgical Innovation Associates, Inc. | Truist Bank, as Notes Collateral Agent | Grant of Patent 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
Jan 2031
Term ends Jan 31, 2031. No further fees fall due before then
Citations
3
later US patents cite this one
That is below the median of utility patents granted in 2013 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.