Term ends Feb 21, 2031 · High confidence
20-year base term ends Sep 5, 2029
Held by Siemens Industry, Inc.
Filed Sep 2, 2010 as application 12/874,331 · Granted Nov 19, 2013
Base term plus 534 days of patent term adjustment (USPTO delay)
Today
2009
2031
Clock starts
Sep 5, 2009
Sep 5, 2009
Term ends
Feb 21, 2031
Feb 21, 2031
Granted
Nov 19, 2013
Nov 19, 2013
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
534
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.
26
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 534 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 Sep 5, 2009, when application 12/584,444, the earliest non-provisional in its chain, was filed (this one was filed Sep 2, 2010) | Sep 5, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +534 days, USPTO patent term adjustment record | Feb 21, 2031 | 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 | Feb 21, 2031 | High confidence |
This family
| US 8,457,793 | In force Aug 2030 | Aug 2030 |
| US 8,587,225 | this patent Feb 2031 | Feb 2031 |
| US 9,002,522 | In force Apr 2031 | Apr 2031 |
| US 8,994,295 | In force Sep 2030 | Sep 2030 |
| US 9,323,233 | In force Mar 2031 | Mar 2031 |
| US 8,909,380 | In force Sep 2029 | Sep 2029 |
| US 9,575,478 | In force Aug 2030 | Aug 2030 |
| US 9,807,849 | In force Jan 2032 | Jan 2032 |
8 of 26 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 |
|---|---|---|---|
| Sep 2, 2010 Reel 24929, frame 639 | Ashar, Premal; Mohan, Tanuj; Perkins, David; Golding, Jonathan | Enlighted, Inc. | Assignment of Assignor's Interest |
| Feb 1, 2016 Reel 37631, frame 651 | Enlighted, Inc. | Pacific Western Bank | Security Interest |
| Oct 21, 2021 Reel 57883, frame 238 | Enlighted, Inc. | Building Robotics, Inc. | Merger |
| Oct 22, 2025 Reel 73156, frame 424 | Building Robotics, Inc. | Siemens Industry, Inc. | Merger |
| Feb 10, 2026 Reel 74526, frame 856 | Pacific Western Bank | Enlighted, Inc. | Release of Security 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
Feb 2031
Term ends Feb 21, 2031. No further fees fall due before then
Note
The 534 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
130
later US patents cite this one
That is top 5% of utility patents granted in 2013 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.