Term ends Oct 12, 2039 · High confidence
20-year base term ends Oct 24, 2038
Held by Spineguard, Sorbonne Universite, Inserm (Institut National de la Santé et de la Recherche Médicale) and Centre National de la Recherche Scientifique - CNRS -
Filed Apr 21, 2020 as application 16/757,937 · Granted Aug 2, 2022
Base term plus 353 days of patent term adjustment (USPTO delay)
Today
2018
2039
Clock starts
Oct 24, 2018
Oct 24, 2018
Term ends
Oct 12, 2039
Oct 12, 2039
Granted
Aug 2, 2022
Aug 2, 2022
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
353
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.
4
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 353 days past its 20-year base term on prosecution delay. 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 Oct 24, 2018, when application PCT/FR2018/052640, the earliest non-provisional in its chain, was filed (this one was filed Apr 21, 2020) | Oct 24, 2038 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +353 days, USPTO patent term adjustment record | Oct 12, 2039 | 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 | In force | High confidence |
| Computed term end | The steps above, in order | Oct 12, 2039 | High confidence |
This family
| US 11,399,902 | this patent Oct 2039 | Oct 2039 |
| US 11,344,372 | In force Oct 2038 | Oct 2038 |
| US 12,594,127 | In force Oct 2038 | Oct 2038 |
3 of 4 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 |
|---|---|---|---|
| Jul 14, 2020 Reel 53198, frame 610 | Bourlion, Maurice; Frezal, Olivier; Morel, Guillaume; Bette, Stéphane; Chandanson, Thibault; Richer, Florian; Kerspern, Valentin | Spineguard; Sorbonne Universite; Inserm (Institut National de la Santé et de la Recherche Médicale); Centre National de la Recherche Scientifique - CNRS - | Assignment of Assignor's Interest |
| Jul 14, 2020 reel/frame not recorded | Bette, Stéphane; Frezal, Olivier; Bourlion, Maurice; Chandanson, Thibault; Morel, Guillaume; Richer, Florian; Kerspern, Valentin | Spineguard | Assignment of Assignor's Interest |
| Jul 14, 2020 reel/frame not recorded | Bette, Stéphane; Frezal, Olivier; Bourlion, Maurice; Chandanson, Thibault; Morel, Guillaume; Richer, Florian; Kerspern, Valentin | Sorbonne Universite | Assignment of Assignor's Interest |
| Jul 14, 2020 reel/frame not recorded | Bette, Stéphane; Frezal, Olivier; Bourlion, Maurice; Chandanson, Thibault; Morel, Guillaume; Richer, Florian; Kerspern, Valentin | Inserm (Institut National de la Santé et de la Recherche Médicale) | Assignment of Assignor's Interest |
| Jul 14, 2020 reel/frame not recorded | Bette, Stéphane; Frezal, Olivier; Bourlion, Maurice; Chandanson, Thibault; Morel, Guillaume; Richer, Florian; Kerspern, Valentin | Centre National de la Recherche Scientifique - CNRS - | 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
Oct 2039
Term ends Oct 12, 2039. Maintenance fees still fall due before then
Note
The 353 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 5% of utility patents granted in 2022 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.