Collateral for a security interest recorded Jan 30, 2026 (Symbiotic Capital Agency LLC).
Term ends Apr 4, 2033 · High confidence
20-year base term ends Aug 30, 2032
Held by Minerva Surgical, Inc.
Filed Jul 26, 2017 as application 15/660,466 · Granted Mar 31, 2020
Base term plus 217 days of patent term adjustment (USPTO delay)
Today
2012
2033
Clock starts
Aug 30, 2012
Aug 30, 2012
Term ends
Apr 4, 2033
Apr 4, 2033
Granted
Mar 31, 2020
Mar 31, 2020
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
217
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 9,439,720, to Apr 4, 2033. The term already ends on or before that date, so the cap shortened nothing.
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.
7
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 217 days past its 20-year base term on prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 1 of 3 maintenance fees is 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 Aug 30, 2012, when application 13/599,928, the earliest non-provisional in its chain, was filed (this one was filed Jul 26, 2017) | Aug 30, 2032 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +217 days, USPTO patent term adjustment record | Apr 4, 2033 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 9,439,720) | resolves to Apr 4, 2033, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 4, 2033 | High confidence |
This family
| US 9,439,720 | In force May 2034 | May 2034 |
| US 9,743,979 | In force Aug 2032 | Aug 2032 |
| US 10,603,104 | this patent Apr 2033 | Apr 2033 |
| US 11,259,866 | In force Mar 2033 | Mar 2033 |
| US 12,016,618 | In force no later than Dec 2032 | no later than Dec 2032 |
| US 12,426,943 | In force Aug 2032 | Aug 2032 |
| Application 19/324,409 | Pending not computed | not computed |
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 |
|---|---|---|---|
| Jul 21, 2020 Reel 53265, frame 675 | Boston Scientific Scimed, Inc. | Minerva Surgical, Inc. | Assignment of Assignor's Interest |
| Oct 8, 2021 Reel 57758, frame 137 | Minerva Surgical, Inc. | Canadian Imperial Bank of Commerce | Security Interest |
| Jan 30, 2026 Reel 74537, frame 617 | Axora Medical, Inc. | Symbiotic Capital Agency LLC, as Administrative Agent and Collateral Agent | Security Interest |
| Feb 5, 2026 Reel 74721, frame 585 | Canadian Imperial Bank of Commerce | Minerva Surgical, Inc. | Release of 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
Apr 2033
Term ends Apr 4, 2033. Maintenance fees still fall due before then
Note
The 217 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 9,439,720, ends no earlier than this term, so it caps nothing.
Citations
3
later US patents cite this one
That is above the median of utility patents granted in 2020 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.