Also listed on Rolls-Royce plc, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends May 16, 2034 · Medium confidence
20-year base term ends Dec 17, 2033
Why Medium: A parent in the chain could not be resolved.
Held by Rolls-Royce Corporation
Filed Dec 15, 2015 as application 14/968,989 · Granted May 14, 2019
Base term plus 150 days of patent term adjustment (USPTO delay)
Today
2013
2034
Clock starts
Dec 17, 2013
Dec 17, 2013
Term ends
May 16, 2034
May 16, 2034
Granted
May 14, 2019
May 14, 2019
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
150
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.
8
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 150 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are paid so far. 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 Dec 17, 2013, when application 14/109,416, the earliest non-provisional in its chain, was filed (this one was filed Dec 15, 2015); a parent in its chain could not be resolved (the next row) | Dec 17, 2033 | 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 | +150 days, USPTO patent term adjustment record | May 16, 2034 | 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 | May 16, 2034 | Medium confidence |
This family
| US 9,482,451 | In force Sep 2034 | Sep 2034 |
| US 9,718,553 | In force Jul 2034 | Jul 2034 |
| Application PCT/US2013/078155 | PCT application no patent term | no patent term |
| US 9,676,484 | In force Aug 2034 | Aug 2034 |
| US 10,288,325 | this patent May 2034 | May 2034 |
| US 10,132,529 | In force Oct 2034 | Oct 2034 |
| US 10,302,342 | In force Nov 2034 | Nov 2034 |
| US 11,448,432 | In force Mar 2035 | Mar 2035 |
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 15, 2015 Reel 37290, frame 241 | Vaisman, Igor | Rolls-Royce Corporation | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
May 2034
Term ends May 16, 2034. Maintenance fees still fall due before then
Note
The 150 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
44
later US patents cite this one
That is top 5% of utility patents granted in 2019 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.