Lapsed Jul 9, 2025 on the fee record · High confidence
20-year base term ends Sep 11, 2027
Third maintenance fee unpaid; grace period ended.
Held by Sonos, Inc.
Filed Sep 11, 2007 as application 11/853,790 · Granted Jul 9, 2013
Base term, 20 years from filing, plus 1443 days of patent term adjustment (USPTO delay)
Today
Lapsed Jul 9, 2025
2007
2031
Clock starts
Sep 11, 2007
Sep 11, 2007
No longer in force
Jul 9, 2025
Jul 9, 2025
Granted
Jul 9, 2013
Jul 9, 2013
Term would have run to
Aug 24, 2031
Aug 24, 2031
base term
patent term adjustment
after the term ends
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
1,443
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.
40
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Aug 24, 2031: its 20-year base term plus 1443 days of term adjustment for prosecution delay. 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 11, 2007, when this application, 11/853,790, was filed | Sep 11, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1443 days, USPTO patent term adjustment record | Aug 24, 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 | lapsed Jul 9, 2025 | High confidence |
| Computed term end | The steps above, in order | Jul 9, 2025 | High confidence |
This family
| US 8,483,853 | this patent Jul 2025 | Jul 2025 |
| US 9,202,509 | In force Apr 2029 | Apr 2029 |
| US 8,788,080 | In force Aug 2029 | Aug 2029 |
| US 8,886,347 | Grace period ended Sep 2027 | Sep 2027 |
| US 8,934,997 | In force Sep 2027 | Sep 2027 |
| US 8,843,228 | In force Sep 2027 | Sep 2027 |
| US 9,014,834 | In force Sep 2027 | Sep 2027 |
| US 9,219,959 | In force Sep 2027 | Sep 2027 |
8 of 40 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 11, 2007 Reel 19812, frame 256 | Lambourne, Robert A., MR. | Sonos, Inc. | Assignment of Assignor's Interest |
| Nov 15, 2015 Reel 37112, frame 14 | Sonos, Inc. | Jpmorgan Chase Bank, N.a. | Patent Security Agreement |
| Apr 1, 2016 Reel 38329, frame 253 | Sonos, Inc. | Gordon Brothers Finance Company | Security Interest |
| Jul 25, 2018 Reel 46625, frame 882 | Gordon Brothers Finance Company | Sonos, Inc. | Release of Security Interest |
| Oct 15, 2021 Reel 58123, frame 206 | Sonos, Inc. | Jpmorgan Chase Bank, N.a. | Security Agreement |
| Oct 18, 2021 Reel 58213, frame 597 | Jpmorgan Chase Bank, N.a. | Sonos, Inc. | Release of Security Interest |
| Feb 12, 2023 Reel 62667, frame 990 | Lambourne, Robert A. | Sonos, Inc. | 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
Note
The 1443 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
1,783
later US patents cite this one
That is top 1% 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.