Lapsed Jan 10, 2025 on the fee record · Medium confidence
20-year base term ends Nov 3, 2029
Why Medium: A parent in the chain could not be resolved.
Second maintenance fee unpaid; grace period ended.
Held by Intelligent Energy Limited
Filed Oct 21, 2014 as application 14/519,735 · Granted Jan 10, 2017
Base term, 20 years from filing
Today
Lapsed Jan 10, 2025
2009
2029
Clock starts
Nov 3, 2009
Nov 3, 2009
No longer in force
Jan 10, 2025
Jan 10, 2025
Granted
Jan 10, 2017
Jan 10, 2017
Term would have run to
Nov 3, 2029
Nov 3, 2029
base term
after the term ends
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,636,826, US 9,005,344, to Nov 3, 2029. The term already ends on or before that date, so the cap shortened nothing.
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.
7
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Nov 3, 2029: its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. Confidence: Medium. 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 Oct 21, 2014); a parent in its chain could not be resolved (the next row) | Nov 3, 2029 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,636,826, US 9,005,344) | resolves to Nov 3, 2029, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed Jan 10, 2025 | High confidence |
| Computed term end | The steps above, in order | Jan 10, 2025 | Medium 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 | In force 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 | this patent 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 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.
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,636,826, US 9,005,344, ends no earlier than this term, so it caps nothing.
Citations
1
later US patent cites 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.