Lapsed Aug 18, 2023 on the fee record · High confidence
20-year base term ends Jan 3, 2028
Second maintenance fee unpaid; grace period ended.
Held by Mitralsolutions, Inc.
Filed Apr 9, 2010 as application 12/522,089 · Granted Aug 18, 2015
Base term, 20 years from filing, plus 426 days of patent term adjustment (USPTO delay)
Today
Lapsed Aug 18, 2023
2008
2029
Clock starts
Jan 3, 2008
Jan 3, 2008
No longer in force
Aug 18, 2023
Aug 18, 2023
Granted
Aug 18, 2015
Aug 18, 2015
Term would have run to
Mar 4, 2029
Mar 4, 2029
base term
patent term adjustment
after the term ends
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
426
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
3
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Mar 4, 2029: its 20-year base term plus 426 days of term adjustment for prosecution delay. 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 3, 2008, when application PCT/US2008/000014, the earliest non-provisional in its chain, was filed (this one was filed Apr 9, 2010) | Jan 3, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +426 days, USPTO patent term adjustment record | Mar 4, 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 | 1 of 3 maintenance fees paid | lapsed Aug 18, 2023 | High confidence |
| Computed term end | The steps above, in order | Aug 18, 2023 | High confidence |
This family
| US 9,326,857 | Lapsed on the fee record May 2024 | May 2024 |
| US 9,107,750 | this patent Aug 2023 | Aug 2023 |
2 of 3 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 |
|---|---|---|---|
| Dec 14, 2010 Reel 25499, frame 503 | Fann, James I. | Mitrasolutions, Inc. | Assignment of Assignor's Interest |
| Dec 14, 2010 Reel 25499, frame 441 | Mitrasolutions, Inc. | ST. Jude Medical, Cardiology Division, Inc. | Assignment of Assignor's Interest |
| Aug 23, 2012 Reel 28833, frame 378 | Mitralsolutions, Inc. | ST. Jude Medical, Cardiology Division, Inc. | Corrective Assignment to Correct Assignor Name Previously Recorded on Reel 025499, Frame 0441. |
| Nov 8, 2012 Reel 29313, frame 99 | Cartledge, Richard | Mitralsolutions, Inc. | Assignment of Assignor's Interest |
| Feb 20, 2013 Reel 29872, frame 337 | Lee, Leonard Y. | Mitralsolutions, Inc. | 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.
What's changing
Note
The 426 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
31
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.