Lapsed Feb 26, 2025 on the fee record · High confidence
20-year base term ended Sep 9, 2025
Third maintenance fee unpaid; grace period ended.
Held by Xueshan Technologies Inc.
Filed May 12, 2011 as application 13/106,616 · Granted Feb 26, 2013
Base term, 20 years from filing
Today
Lapsed Feb 26, 2025
2005
2026
Clock starts
Sep 9, 2005
Sep 9, 2005
No longer in force
Feb 26, 2025
Feb 26, 2025
Granted
Feb 26, 2013
Feb 26, 2013
Term would have run to
Sep 9, 2025
Sep 9, 2025
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
None
Term adjustment
No prosecution delay on this record.
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 Sep 9, 2025: its 20-year base term, with no 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 Sep 9, 2005, when application PCT/GB2005/003496, the earliest non-provisional in its chain, was filed (this one was filed May 12, 2011) | Sep 9, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | 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 Feb 26, 2025 | High confidence |
| Computed term end | The steps above, in order | Feb 26, 2025 | High confidence |
This family
| US 8,031,792 | In force (reinstated) Feb 2028 | Feb 2028 |
| US 8,385,450 | this patent Feb 2025 | Feb 2025 |
2 of 3 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 |
|---|---|---|---|
| Dec 9, 2020 Reel 54595, frame 227 | Mstar Semiconductor, Inc. (Cayman Islands) | MediaTek Inc. | Merger |
| Dec 9, 2020 Reel 54595, frame 404 | Mstar Semiconductor, Inc. | MediaTek Inc. | Merger |
| Dec 9, 2020 Reel 54592, frame 876 | Mstar France SAS | MediaTek Inc. | Assignment of Assignor's Interest |
| Dec 13, 2020 Reel 54711, frame 715 | Mstar Software R&D (Shenzhen) Ltd. | MediaTek Inc. | Assignment of Assignor's Interest |
| Mar 1, 2021 Reel 55443, frame 818 | MediaTek Inc. | Xueshan Technologies 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.
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.