Collateral for a security interest recorded Apr 19, 2016 (Credit Suisse AG, Cayman Islands Branch).
Term ends Dec 23, 2031 · High confidence
20-year base term ends Jul 21, 2030
Held by Sensus USA Inc.
Filed Jan 27, 2012 as application 13/387,470 · Granted Nov 3, 2015
Base term plus 520 days of patent term adjustment (USPTO delay)
Today
2010
2031
Clock starts
Jul 21, 2010
Jul 21, 2010
Term ends
Dec 23, 2031
Dec 23, 2031
Granted
Nov 3, 2015
Nov 3, 2015
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
520
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.
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 runs 520 days past its 20-year base term on 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 Jul 21, 2010, when application PCT/GB2010/001383, the earliest non-provisional in its chain, was filed (this one was filed Jan 27, 2012) | Jul 21, 2030 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +520 days, USPTO patent term adjustment record | Dec 23, 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 23, 2031 | High confidence |
This family
| US 9,176,192 | this patent Dec 2031 | Dec 2031 |
1 of 2 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 |
|---|---|---|---|
| Jan 27, 2012 Reel 27607, frame 804 | Donaldson, James; Surrall, Sarah; Matthews, Alexander | Intelligent Sustainable Energy Limited | Assignment of Assignor's Interest |
| Mar 19, 2012 Reel 27883, frame 822 | McCulloch, Malcolm | Isis Innovation Limited | Assignment of Assignor's Interest |
| Mar 22, 2012 Reel 27910, frame 544 | Isis Innovation Limited | Intelligent Sustainable Energy Limited | Assignment of Assignor's Interest |
| Dec 1, 2015 Reel 37176, frame 269 | Intelligent Sustainable Energy Limited | Sensus USA Inc. | Assignment of Assignor's Interest |
| Apr 19, 2016 Reel 38474, frame 337 | Sensus USA Inc.; Sensus Worldwide Limited; Sensus Spectrum LLC; Smith-Blair, Inc. | Credit Suisse AG, Cayman Islands Branch, as Collateral Agent | Security Agreement |
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
Dec 2031
Term ends Dec 23, 2031. Maintenance fees still fall due before then
Note
The 520 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
30
later US patents cite this one
That is top 25% of utility patents granted in 2015 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.