Term ends Oct 3, 2032 · High confidence
20-year base term ends Nov 3, 2029
Held by Intelligent Energy Limited
Filed Jul 2, 2010 as application 12/829,801 · Granted Mar 24, 2015
Base term plus 1065 days of patent term adjustment (USPTO delay)
Today
2009
2032
Clock starts
Nov 3, 2009
Nov 3, 2009
Term ends
Oct 3, 2032
Oct 3, 2032
Granted
Mar 24, 2015
Mar 24, 2015
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
1,065
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.
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 1065 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 Nov 3, 2009, when application PCT/US2009/063108, the earliest non-provisional in its chain, was filed (this one was filed Jul 2, 2010) | Nov 3, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1065 days, USPTO patent term adjustment record | Oct 3, 2032 | 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 | Oct 3, 2032 | High confidence |
This family
| Application PCT/US2009/063108 | PCT application no patent term | no patent term |
| US D673,497 | In force Jan 2027 | Jan 2027 |
| US 8,986,404 | this patent Oct 2032 | Oct 2032 |
| US 8,636,826 | Lapsed on the fee record Jan 2026 | Jan 2026 |
| US 9,005,344 | In force Nov 2029 | Nov 2029 |
| US 9,539,558 | Lapsed on the fee record Jan 2025 | Jan 2025 |
| US 9,722,268 | Lapsed on the fee record Aug 2025 | Aug 2025 |
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 |
|---|---|---|---|
| Aug 30, 2010 Reel 24908, frame 536 | Rosenzweig, Alain; Curello, Andrew J.; Stepan, Constance R.; Curello, Michael; Spahr, Paul | Societe Bic | Assignment of Assignor's Interest |
| Sep 11, 2014 Reel 33721, frame 280 | Societe Bic | The Commissariat a l'Energie Atomique et aux Energies Alternatives (Cea) | Re-Assignment |
| Aug 7, 2015 Reel 36280, frame 892 | Société Bic | Intelligent Energy Limited | 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
Oct 2032
Term ends Oct 3, 2032.
Note
The 1065 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
4
later US patents cite this one
That is below the median 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.