Term ends Oct 19, 2031 · High confidence
20-year base term ends Feb 23, 2031
Held by Google LLC
Filed Feb 23, 2011 as application 13/033,573 · Granted Dec 29, 2015
Base term plus 238 days of patent term adjustment (USPTO delay)
Today
2011
2031
Clock starts
Feb 23, 2011
Feb 23, 2011
Term ends
Oct 19, 2031
Oct 19, 2031
Granted
Dec 29, 2015
Dec 29, 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
238
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.
126
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 238 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 Feb 23, 2011, when this application, 13/033,573, was filed | Feb 23, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +238 days, USPTO patent term adjustment record | Oct 19, 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 | Oct 19, 2031 | High confidence |
This family
| US 9,223,323 | this patent Oct 2031 | Oct 2031 |
| US 9,605,858 | In force Sep 2034 | Sep 2034 |
| US 8,752,771 | In force Aug 2032 | Aug 2032 |
| US 9,494,332 | In force Feb 2035 | Feb 2035 |
| US 8,727,611 | Lapsed on the fee record May 2026 | May 2026 |
| US 9,026,254 | In force Nov 2032 | Nov 2032 |
| US 9,261,287 | In force Dec 2033 | Dec 2033 |
| US 8,918,219 | In force no later than Jan 2032 | no later than Jan 2032 |
8 of 126 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 |
|---|---|---|---|
| Aug 1, 2011 Reel 26677, frame 20 | Fadell, Anthony M; Rogers, Matthew L; Sloo, David; Matas, Michael James; Plitkins, Michael; Filson, John Benjamin; Huppi, Brian; Bould, Fred | Nest Labs, Inc. | Assignment of Assignor's Interest |
| Apr 25, 2012 Reel 28100, frame 823 | Sloo, David; Fadell, Anthony Michael; Rogers, Matthew Lee; Plitkins, Michael; Matas, Michael James; Bould, Fred | Nest Labs, Inc. | Assignment of Assignor's Interest |
| Jun 5, 2012 Reel 28323, frame 297 | Nest Labs, Inc. | Wells Fargo Bank, National Association | Negative Pledge and Covenant |
| Feb 10, 2014 Reel 32238, frame 959 | Wells Fargo Bank, National Association | Nest Labs, Inc. | Release of Security Interest in Patents |
| Aug 19, 2014 Reel 33568, frame 693 | Nest Labs, Inc. | Google Inc. | Assignment of Assignor's Interest |
| Oct 2, 2017 Reel 44566, frame 657 | Google Inc. | Google LLC | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Oct 2031
Term ends Oct 19, 2031. Maintenance fees still fall due before then
Note
The 238 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
191
later US patents cite this one
That is top 5% 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.