Term ends Apr 5, 2034 · High confidence
20-year base term ends Oct 22, 2033
Held by Syensqo S.A.
Filed Apr 30, 2015 as application 14/439,905 · Granted Apr 4, 2017
Base term plus 165 days of patent term adjustment (USPTO delay)
Today
2013
2034
Clock starts
Oct 22, 2013
Oct 22, 2013
Term ends
Apr 5, 2034
Apr 5, 2034
Granted
Apr 4, 2017
Apr 4, 2017
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
165
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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.
6
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 165 days past its 20-year base term on prosecution delay. 2 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 22, 2013, when application PCT/EP2013/072067, the earliest non-provisional in its chain, was filed (this one was filed Apr 30, 2015) | Oct 22, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +165 days, USPTO patent term adjustment record | Apr 5, 2034 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 5, 2034 | High confidence |
This family
| US 10,227,462 | In force Jan 2034 | Jan 2034 |
| US 9,611,366 | this patent Apr 2034 | Apr 2034 |
| US 10,283,234 | In force Apr 2035 | Apr 2035 |
3 of 6 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 |
|---|---|---|---|
| Feb 13, 2017 Reel 41235, frame 257 | Frache, Alberto; Tata, Jennifer, Katty; Camino, Giovanni; Besana, Giambattista; Abusleme, Julio A. | Politecnico Di Torino; Solvay S.A. | Assignment of Assignor's Interest |
| Feb 13, 2017 Reel 41235, frame 319 | Politecnico Di Torino | Solvay S.A. | Assignment of Assignor's Interest |
| Feb 13, 2017 reel/frame not recorded | Besana, Giambattista; Abusleme, Julio A.; Camino, Giovanni; Frache, Alberto; Tata, Jennifer, Katty | Politecnico Di Torino | Assignment of Assignor's Interest |
| Feb 13, 2017 reel/frame not recorded | Besana, Giambattista; Abusleme, Julio A.; Camino, Giovanni; Frache, Alberto; Tata, Jennifer, Katty | Solvay S.A. | Assignment of Assignor's Interest |
| Feb 1, 2024 Reel 66406, frame 174 | Solvay S.A. | Syensqo S.A. | 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
Apr 2034
Term ends Apr 5, 2034. Maintenance fees still fall due before then
Note
The 165 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
2
later US patents cite this one
That is below the median of utility patents granted in 2017 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.