Also listed on SNECMA, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Dec 10, 2026 · High confidence
20-year base term ended Dec 29, 2024
Held by Safran Aircraft Engines
Filed Dec 29, 2004 as application 11/023,501 · Granted Apr 28, 2009
Base term plus 711 days of patent term adjustment (USPTO delay)
Today
2004
2026
Clock starts
Dec 29, 2004
Dec 29, 2004
Term ends
Dec 10, 2026
Dec 10, 2026
Granted
Apr 28, 2009
Apr 28, 2009
base term
patent term adjustment
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
711
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
This patent's term runs 711 days past its 20-year base term on prosecution delay. 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 Dec 29, 2004, when this application, 11/023,501, was filed | Dec 29, 2024 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +711 days, USPTO patent term adjustment record | Dec 10, 2026 | 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 10, 2026 | High confidence |
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 |
|---|---|---|---|
| Dec 29, 2004 Reel 16138, frame 308 | Gerez, Valerio; Jadczak, Edouard | SNECMA Moteurs | Assignment of Assignor's Interest |
| Feb 20, 2008 Reel 20609, frame 569 | SNECMA Moteurs | SNECMA | Change of Name |
| May 23, 2018 Reel 46479, frame 807 | SNECMA | Safran Aircraft Engines | Change of Name |
| Aug 24, 2018 Reel 46939, frame 336 | SNECMA | Safran Aircraft Engines | Corrective Assignment to Correct the Cover Sheet to Remove Application Nos. 10250419, 10786507, 10786409, 12416418, 12531115, 12996294, 12094637 12416422 Previously Recorded on Reel 046479 Frame 0807. Assignor(S) Hereby Confirms the Change of Name. |
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
Dec 2026
Term ends Dec 10, 2026. No further fees fall due before then
Note
The 711 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
27
later US patents cite this one
That is above the median of utility patents granted in 2009 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.