Also listed on Materials Solutions Limited, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Oct 18, 2031 · High confidence
20-year base term ends Oct 18, 2031
Filed Jan 20, 2015 as application 14/600,819 · Granted Jul 12, 2016
Base term, 20 years from filing
Today
2011
2031
Clock starts
Oct 18, 2011
Oct 18, 2011
Term ends
Oct 18, 2031
Oct 18, 2031
Granted
Jul 12, 2016
Jul 12, 2016
base term
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.
2
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 is its 20-year base term, with no adjustment for 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 Oct 18, 2011, when application 13/275,694, the earliest non-provisional in its chain, was filed (this one was filed Jan 20, 2015) | Oct 18, 2031 | 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 | In force | High confidence |
| Computed term end | The steps above, in order | Oct 18, 2031 | High confidence |
This family
| US 8,986,604 | In force Dec 2033 | Dec 2033 |
| US 9,388,479 | this patent Oct 2031 | Oct 2031 |
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 |
|---|---|---|---|
| May 12, 2015 Reel 35622, frame 273 | Materials Solutions | Materials Solutions Limited | Change of Name |
| Jul 14, 2015 Reel 36076, frame 423 | Materials Solutions Limited | Materials Solutions (Worcester) Limited | Assignment of Assignor's Interest |
| Jul 15, 2015 Reel 36096, frame 949 | Materials Solutions (Worcester) Limited | Materials Solutions Limited | Change of Name |
| Feb 26, 2018 Reel 45037, frame 441 | Materials Solutions Limited, UK | Siemens Aktiengesellschaft | Assignment of Assignor's Interest |
| Jul 26, 2021 Reel 57177, frame 506 | Siemens Aktiengesellschaft | Siemens Energy Global GmbH & Co. KG | 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
Oct 2031
Term ends Oct 18, 2031. Maintenance fees still fall due before then
Citations
5
later US patents cite this one
That is above the median of utility patents granted in 2016 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.