Lapsed Sep 30, 2026 on the fee record · High confidence
20-year base term ends Dec 21, 2031
Third maintenance fee unpaid; grace period ended.
Held by Sony Electronics Inc.
Filed Dec 21, 2011 as application 13/333,133 · Granted Sep 30, 2014
Base term, 20 years from filing, plus 246 days of patent term adjustment (USPTO delay)
Today
Lapsed Sep 30, 2026
2011
2032
Clock starts
Dec 21, 2011
Dec 21, 2011
No longer in force
Sep 30, 2026
Sep 30, 2026
Granted
Sep 30, 2014
Sep 30, 2014
Term would have run to
Aug 23, 2032
Aug 23, 2032
base term
patent term adjustment
after the term ends
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
246
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.
3
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 23, 2032: its 20-year base term plus 246 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 Dec 21, 2011, when this application, 13/333,133, was filed | Dec 21, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +246 days, USPTO patent term adjustment record | Aug 23, 2032 | 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 Sep 30, 2026 | High confidence |
| Computed term end | The steps above, in order | Sep 30, 2026 | High confidence |
This family
| US 8,847,136 | this patent Sep 2026 | Sep 2026 |
| Application PCT/US2011/067173 | PCT application no patent term | no patent term |
| US 10,129,487 | Grace period ended Dec 2031 | Dec 2031 |
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 |
|---|---|---|---|
| Feb 16, 2012 Reel 27717, frame 353 | Ayers, Thomas; Brady, Frederick Thomas; Kang, Jinsuk; Hwang, Sungin; Yu, Sen | Pixim, Inc. | Assignment of Assignor's Interest |
| Sep 30, 2021 Reel 57657, frame 53 | Pixim Inc. | Sony Electronics 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 246 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
52
later US patents cite this one
That is top 10% of utility patents granted in 2014 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.