Also listed on Confluent, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Jul 14, 2031 · High confidence
20-year base term ends May 24, 2031
Held by Covidien LP
Filed May 24, 2011 as application 13/115,017 · Granted Mar 3, 2015
Base term plus 472 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2011
2031
Clock starts
May 24, 2011
May 24, 2011
Term ends
Jul 14, 2031
Jul 14, 2031
Granted
Mar 3, 2015
Mar 3, 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
472
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 8,591,929, US 8,591,950, US 8,734,824, US 8,734,930, US 8,883,185.
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.
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 runs 472 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 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 24, 2011, when this application, 13/115,017, was filed | May 24, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +472 days, USPTO patent term adjustment record | Sep 7, 2032 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,591,929, US 8,591,950, US 8,734,824, US 8,734,930, US 8,883,185) | capped to Jul 14, 2031 | 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 | Jul 14, 2031 | High confidence |
This family
| US 8,968,783 | this patent Jul 2031 | Jul 2031 |
| US 9,468,684 | In force May 2031 | May 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 |
|---|---|---|---|
| Jun 14, 2011 Reel 26439, frame 445 | Bennett, Steven; Mast, Nathaniel; Lavigne, Kevin; Skalla, Walter | Confluent Surgical, Inc.; Tyco Healthcare Group LP | Assignment of Assignor's Interest |
| Jun 14, 2011 reel/frame not recorded | Bennett, Steven; Lavigne, Kevin; Mast, Nathaniel; Skalla, Walter | Confluent Surgical, Inc. | Assignment of Assignor's Interest |
| Jun 14, 2011 reel/frame not recorded | Bennett, Steven; Lavigne, Kevin; Mast, Nathaniel; Skalla, Walter | Tyco Healthcare Group LP | Assignment of Assignor's Interest |
| May 30, 2012 Reel 28284, frame 774 | Lavigne, Kevin | Tyco Healthcare Group LP | 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 193 | Confluent Surgical, Inc. | Covidien LP | Assignment of Assignor's 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
Jul 2031
Term ends Jul 14, 2031.
Note
The 472 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 8,591,929, US 8,591,950, US 8,734,824, US 8,734,930, US 8,883,185.
Citations
20
later US patents cite this one
That is top 25% 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.