Also listed on American Audio Components Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Oct 15, 2031 · High confidence
20-year base term ends Nov 27, 2029
Filed Nov 27, 2009 as application 12/626,835 · Granted Feb 19, 2013
Base term plus 687 days of patent term adjustment (USPTO delay)
Today
2009
2031
Clock starts
Nov 27, 2009
Nov 27, 2009
Term ends
Oct 15, 2031
Oct 15, 2031
Granted
Feb 19, 2013
Feb 19, 2013
base term
patent term adjustment
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
687
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.
This patent's term runs 687 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 Nov 27, 2009, when this application, 12/626,835, was filed | Nov 27, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +687 days, USPTO patent term adjustment record | Oct 15, 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 | Oct 15, 2031 | High confidence |
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 |
|---|---|---|---|
| Nov 27, 2009 reel/frame not recorded | Su, Yong-ze; Wu, Zhi-jiang | AAC Acoustic Technologies (Shenzhen) Co., Ltd. | Assignment of Assignor's Interest |
| Nov 27, 2009 reel/frame not recorded | Su, Yong-ze; Wu, Zhi-jiang | American Audio Components Inc. | Assignment of Assignor's Interest |
| Nov 27, 2009 Reel 23575, frame 975 | Wu, Zhi-jiang; Su, Yong-ze | AAC Acoustic Technologies (Shenzhen) Co., Ltd.; American Audio Components 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
Oct 2031
Term ends Oct 15, 2031. No further fees fall due before then
Note
The 687 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
107
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.