Term ended Dec 13, 2025 · Medium confidence
20-year base term ended Aug 25, 2025
Why Medium: A parent in the chain could not be resolved.
Held by Dolby International AB
Filed May 24, 2011 as application 13/115,096 · Granted Nov 26, 2013
Base term plus 110 days of patent term adjustment (USPTO delay)
Today
Term ended Dec 13, 2025
2005
2026
Clock starts
Aug 25, 2005
Aug 25, 2005
Term ended
Dec 13, 2025
Dec 13, 2025
Granted
Nov 26, 2013
Nov 26, 2013
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
110
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.
4
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 110 days past its 20-year base term on prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. Confidence: Medium. 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 Aug 25, 2005, when application 11/213,188, the earliest non-provisional in its chain, was filed (this one was filed May 24, 2011); a parent in its chain could not be resolved (the next row) | Aug 25, 2025 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +110 days, USPTO patent term adjustment record | Dec 13, 2025 | 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 | term ended | High confidence |
| Computed term end | The steps above, in order | Dec 13, 2025 | Medium confidence |
This family
| US 7,974,422 | In force Sep 2029 | Sep 2029 |
| US 8,594,319 | this patent Dec 2025 | Dec 2025 |
| US 8,744,067 | Term ended Aug 2025 | Aug 2025 |
| US 8,897,466 | Term ended Aug 2025 | Aug 2025 |
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 |
|---|---|---|---|
| May 24, 2011 Reel 26334, frame 410 | Ho, Chi Fai; Chiu, Shin Cheung Simon | TP Lab, Inc. | Assignment of Assignor's Interest |
| Jun 11, 2012 Reel 28354, frame 305 | TP Lab, Inc. | Eighth Nerve Inc. | Assignment of Assignor's Interest |
| Jun 11, 2012 Reel 28354, frame 394 | Eighth Nerve Inc. | Dolby International AB | 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 110 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
7
later US patents cite this one
That is below the median 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.