Term ends Mar 28, 2027 · High confidence
20-year base term ended Apr 1, 2024
Held by Sonos, Inc.
Filed Jun 5, 2004 as application 10/861,653 · Granted Aug 4, 2009
Base term plus 1091 days of patent term adjustment (USPTO delay)
Today
2004
2027
Clock starts
Apr 1, 2004
Apr 1, 2004
Term ends
Mar 28, 2027
Mar 28, 2027
Granted
Aug 4, 2009
Aug 4, 2009
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
1,091
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.
110
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 1091 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 Apr 1, 2004, when application 10/816,217, the earliest non-provisional in its chain, was filed (this one was filed Jun 5, 2004) | Apr 1, 2024 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1091 days, USPTO patent term adjustment record | Mar 28, 2027 | 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 | Mar 28, 2027 | High confidence |
This family
| US 8,234,395 | Term ended Mar 2026 | Mar 2026 |
| US 7,571,014 | this patent Mar 2027 | Mar 2027 |
| Application PCT/US2004/023102 | PCT application no patent term | no patent term |
| Application 11/278,473 | Abandoned not computed | not computed |
| US 8,020,023 | In force Mar 2027 | Mar 2027 |
| US 8,086,752 | Lapsed on the fee record Dec 2023 | Dec 2023 |
| US 8,290,603 | Lapsed on the fee record Oct 2024 | Oct 2024 |
| US 8,370,678 | Term ended Apr 2024 | Apr 2024 |
8 of 110 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 |
|---|---|---|---|
| Jun 5, 2004 Reel 15443, frame 654 | Lambourne, Robert A. | Sonos, Inc. | Assignment of Assignor's Interest |
| May 24, 2006 Reel 17664, frame 836 | Sonos, Inc. | Silicon Valley Bank | Security Agreement |
| Feb 26, 2010 Reel 23998, frame 778 | Silicon Valley Bank | Sonos, Inc. | Release of Security Interest |
| Jun 8, 2012 Reel 28345, frame 881 | Lambourne, Robert A.; Millington, Nicholas A. J. | 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 |
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
Mar 2027
Term ends Mar 28, 2027. No further fees fall due before then
Note
The 1091 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
2,011
later US patents cite this one
That is top 1% of utility patents granted in 2009 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.