Also listed on Inserm (Nstitut National de la Sante et de la Recherche Medicale, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Oct 24, 2038 · High confidence
20-year base term ends Oct 24, 2038
Held by Spineguard, Sorbonne Universite, Inserm (Nstitut National de la Sante et de la Recherche Medicale) and Centre National de la Recherche Scientifique-CNRS
Filed Apr 13, 2022 as application 17/659,167 · Granted Apr 7, 2026
Base term plus 878 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2018
2038
Clock starts
Oct 24, 2018
Oct 24, 2018
Term ends
Oct 24, 2038
Oct 24, 2038
Granted
Apr 7, 2026
Apr 7, 2026
base term
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
878
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 11,344,372, US 11,399,902.
0 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 878 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 0 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 Oct 24, 2018, when application PCT/FR2018/052640, the earliest non-provisional in its chain, was filed (this one was filed Apr 13, 2022) | Oct 24, 2038 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +878 days, USPTO patent term adjustment record | Mar 20, 2041 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 11,344,372, US 11,399,902) | capped to Oct 24, 2038 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Oct 24, 2038 | High confidence |
This family
| US 11,399,902 | In force Oct 2039 | Oct 2039 |
| US 11,344,372 | In force Oct 2038 | Oct 2038 |
| US 12,594,127 | this patent 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 |
|---|---|---|---|
| May 27, 2022 Reel 60043, frame 64 | Bette, Stephane; Bourlion, Maurice; Chandanson, Thibault | Spineguard; Inserm (Institut National de la Sante et de la Recherche Medicale; Centre National de la Recherche Scientifique-CNRS | Assignment of Assignor's Interest |
| May 27, 2022 reel/frame not recorded | Bette, Stephane; Bourlion, Maurice; Chandanson, Thibault | Spineguard | Assignment of Assignor's Interest |
| May 27, 2022 reel/frame not recorded | Bette, Stephane; Bourlion, Maurice; Chandanson, Thibault | Inserm (Institut National de la Sante et de la Recherche Medicale | Assignment of Assignor's Interest |
| May 27, 2022 reel/frame not recorded | Bette, Stephane; Bourlion, Maurice; Chandanson, Thibault | Centre National de la Recherche Scientifique-CNRS | Assignment of Assignor's Interest |
| Aug 31, 2022 Reel 60958, frame 323 | Bette, Stephane; Bourlion, Maurice; Chandanson, Thibault | Spineguard | Assignment of Assignor's Interest |
| Feb 9, 2025 Reel 70156, frame 583 | Bourlion, Maurice; Bette, Stephane; Chandanson, Thibault | Spineguard; Sorbonne Universite; Inserm (Nstitut National de la Sante et de la Recherche Medicale); Centre National de la Recherche Scientifique-CNRS | Assignment of Assignor's Interest |
| Feb 9, 2025 reel/frame not recorded | Bette, Stephane; Bourlion, Maurice; Chandanson, Thibault | Spineguard | Assignment of Assignor's Interest |
| Feb 9, 2025 reel/frame not recorded | Bette, Stephane; Bourlion, Maurice; Chandanson, Thibault | Sorbonne Universite | Assignment of Assignor's Interest |
| Feb 9, 2025 reel/frame not recorded | Bette, Stephane; Bourlion, Maurice; Chandanson, Thibault | Inserm (Nstitut National de la Sante et de la Recherche Medicale) | Assignment of Assignor's Interest |
| Feb 9, 2025 reel/frame not recorded | Bette, Stephane; Bourlion, Maurice; Chandanson, Thibault | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Oct 2038
Term ends Oct 24, 2038. Maintenance fees still fall due before then
Note
The 878 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 11,344,372, US 11,399,902.
Citations
We have no citation count for this patent yet. That is not the same as never having been cited.
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.