Term ended Aug 6, 2022 · High confidence
20-year base term ended Aug 6, 2022
USPTO later recorded it as expired for non-payment on Dec 22, 2025.
Held by STT Webos, Inc.
Filed Mar 17, 2011 as application 13/050,871 · Granted Nov 19, 2013
Base term plus 6 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
Term ended Aug 6, 2022
2002
2026
Clock starts
Aug 6, 2002
Aug 6, 2002
Term ended
Aug 6, 2022
Aug 6, 2022
Granted
Nov 19, 2013
Nov 19, 2013
base term
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
6
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 8,812,640.
2 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
32
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 6 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 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 Aug 6, 2002, when application 10/713,904, the earliest non-provisional in its chain, was filed (this one was filed Mar 17, 2011) | Aug 6, 2022 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +6 days, USPTO patent term adjustment record | Aug 12, 2022 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,812,640) | capped to Aug 6, 2022 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 2 maintenance fees paid | term ended | High confidence |
| USPTO status record | Recorded as expired for non-payment on Dec 22, 2025, after the term ended | no change | High confidence |
| Computed term end | The steps above, in order | Aug 6, 2022 | High confidence |
This family
| US 7,418,702 | Lapsed on the fee record Aug 2016 | Aug 2016 |
| US 7,379,990 | Lapsed on the fee record May 2020 | May 2020 |
| US 7,945,652 | In force Nov 2026 | Nov 2026 |
| US 8,799,473 | Term ended Dec 2022 | Dec 2022 |
| US 8,812,640 | Term ended Aug 2022 | Aug 2022 |
| US 8,589,527 | this patent Aug 2022 | Aug 2022 |
| US 8,812,682 | Term ended Dec 2022 | Dec 2022 |
| US 8,341,258 | Term ended Aug 2022 | Aug 2022 |
8 of 32 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 |
|---|---|---|---|
| Feb 16, 2017 Reel 41276, frame 240 | STT Webos, Inc.; Tsao, Sheng Tai | TS Patents LLC | Assignment of Assignor's Interest |
| Aug 2, 2018 Reel 46538, frame 200 | TS Patents LLC | STT Webos, Inc. | Assignment of Assignor's Interest |
| Mar 18, 2026 Reel 75137, frame 704 | STT Webos, Inc. (Texas) | STT Webos, Inc. (Delaware) | Reassignment |
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.
What's changing
Note
The 6 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 8,812,640.
Citations
0
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.