Term ends May 14, 2029 · High confidence
20-year base term ends Aug 17, 2030
Held by Arkema Inc.
Filed Mar 8, 2012 as application 13/391,417 · Granted Apr 21, 2015
Base term plus 32 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2010
2030
Clock starts
Aug 17, 2010
Aug 17, 2010
Term ends
May 14, 2029
May 14, 2029
Granted
Apr 21, 2015
Apr 21, 2015
base term
after the term ends
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
32
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 8,075,798.
3 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 32 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. All three maintenance fees are recorded paid; no more fees are due. 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 17, 2010, when application PCT/FR2010/051727, the earliest non-provisional in its chain, was filed (this one was filed Mar 8, 2012) | Aug 17, 2030 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +32 days, USPTO patent term adjustment record | Sep 18, 2030 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,075,798) | capped to May 14, 2029 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | May 14, 2029 | High confidence |
This family
| US 9,011,711 | this patent May 2029 | May 2029 |
| Application 14/615,741 | Abandoned not computed | not computed |
| US 10,035,938 | In force no later than Aug 2030 | no later than Aug 2030 |
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 |
|---|---|---|---|
| Feb 29, 2012 Reel 27780, frame 812 | Rached, Wissam | Arkema Inc. | Assignment of Assignor's Interest |
| Mar 19, 2012 Reel 27883, frame 580 | Rached, Wissam | Arkema France | Corrective Assignment to Correct the Assignee Should Be Arkema France Not Arkema Inc. Previously Recorded on Reel 027780 Frame 0812. Assignor(S) Hereby Confirms the Please Update the Assignee from Arkema Inc. to Arkema France.. |
| Jul 4, 2025 Reel 71814, frame 739 | Arkema France | Arkema France | Change of Address |
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
May 2029
Term ends May 14, 2029. No further fees fall due before then
Note
The 32 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 8,075,798.
Citations
101
later US patents cite this one
That is top 5% 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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.