Lapsed Feb 4, 2026 on the fee record · High confidence
20-year base term ends May 14, 2029
Third maintenance fee unpaid; grace period ended.
Held by Safran Nacelles
Filed Dec 22, 2010 as application 13/000,720 · Granted Feb 4, 2014
Base term, 20 years from filing
Today
Lapsed Feb 4, 2026
2009
2029
Clock starts
May 14, 2009
May 14, 2009
No longer in force
Feb 4, 2026
Feb 4, 2026
Granted
Feb 4, 2014
Feb 4, 2014
Term would have run to
May 14, 2029
May 14, 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.
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.
53
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 May 14, 2029: its 20-year base term, with no adjustment for prosecution delay. 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 May 14, 2009, when application PCT/FR2009/050900, the earliest non-provisional in its chain, was filed (this one was filed Dec 22, 2010) | May 14, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | 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 | lapsed Feb 4, 2026 | High confidence |
| Computed term end | The steps above, in order | Feb 4, 2026 | High confidence |
This family
| US 8,955,305 | In force Jan 2031 | Jan 2031 |
| US 8,943,793 | In force Apr 2030 | Apr 2030 |
| US 8,975,911 | In force Apr 2029 | Apr 2029 |
| US 8,573,934 | In force Feb 2031 | Feb 2031 |
| US 8,777,164 | Lapsed on the fee record Jul 2026 | Jul 2026 |
| US 8,393,435 | Lapsed on the fee record Mar 2017 | Mar 2017 |
| US 8,960,597 | In force May 2030 | May 2030 |
| US 8,640,825 | this patent Feb 2026 | Feb 2026 |
8 of 53 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 |
|---|---|---|---|
| Dec 22, 2010 Reel 25551, frame 127 | Vauchel, Guy Bernard; Drevon, Emmanuel; Gonidec, Patrick; Ruckert, Guillaume; Conete, Eric; Barreteau, Renaud | Aircelle; SNECMA Propulsion Solide | Assignment of Assignor's Interest |
| Dec 22, 2010 reel/frame not recorded | Drevon, Emmanuel; Vauchel, Guy Bernard; Gonidec, Patrick; Ruckert, Guillaume; Barreteau, Renaud; Conete, Eric | Aircelle | Assignment of Assignor's Interest |
| Dec 22, 2010 reel/frame not recorded | Drevon, Emmanuel; Vauchel, Guy Bernard; Gonidec, Patrick; Ruckert, Guillaume; Barreteau, Renaud; Conete, Eric | SNECMA Propulsion Solide | Assignment of Assignor's Interest |
| Jan 29, 2014 Reel 32135, frame 709 | SNECMA Propulsion Solide | Herakles | Merger |
| Dec 9, 2016 Reel 40700, frame 140 | Aircelle | Safran Nacelles | 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.
Citations
27
later US patents cite this one
That is top 25% of utility patents granted in 2014 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.