Term ends no later than Mar 23, 2027 · Medium confidence
20-year base term ends Mar 23, 2027
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Held by TC1 LLC
Filed Nov 12, 2010 as application 12/945,594 · Granted Jun 14, 2016
Base term, 20 years from filing
Today
2007
2027
Clock starts
Mar 23, 2007
Mar 23, 2007
Ends no later than
Mar 23, 2027
Mar 23, 2027
Granted
Jun 14, 2016
Jun 14, 2016
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.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
2 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. 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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 2 of 2 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 Mar 23, 2007, when application 11/728,051, the earliest non-provisional in its chain, was filed (this one was filed Nov 12, 2010) | Mar 23, 2027 | 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 | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | no later than Mar 23, 2027 | Medium confidence |
This family
| US 7,841,976 | In force May 2029 | May 2029 |
| US 9,364,592 | this patent no later than Mar 2027 | no later than Mar 2027 |
| US 9,364,593 | In force Mar 2027 | Mar 2027 |
| US 9,717,833 | In force Mar 2027 | Mar 2027 |
| US 10,149,932 | In force no later than Mar 2027 | no later than Mar 2027 |
| US 10,864,309 | In force Jul 2027 | Jul 2027 |
| US 11,708,833 | In force Mar 2027 | Mar 2027 |
| US 12,404,858 | In force Mar 2027 | Mar 2027 |
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 |
|---|---|---|---|
| Mar 6, 2015 Reel 35108, frame 410 | McBride, Mark W.; Boger, David A.; Campbell, Robert L.; Dillon, Gregory P.; Hambric, Stephen A.; Kunz, Robert F.; Mallison, Thomas M.; Runt, James P.; Walsh, Justin M. | The Penn State Research Foundation | Assignment of Assignor's Interest |
| Oct 6, 2015 Reel 36736, frame 344 | Leschinsky, Boris | Datascope Investment Corp. | Assignment of Assignor's Interest |
| Oct 6, 2015 Reel 36738, frame 369 | Datascope Investment Corp. | Thoratec Corporation | Assignment of Assignor's Interest |
| May 3, 2017 Reel 42261, frame 587 | Thoratec Corporation | Thoratec LLC | Confirmatory Assignment |
| May 3, 2017 Reel 42261, frame 615 | Thoratec LLC | TC1 LLC | 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
Mar 2027
Term ends no later than Mar 23, 2027. No further fees fall due before then
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Mar 23, 2027. We will not guess the cap.
Citations
242
later US patents cite this one
That is top 1% 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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. 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.