Term ends Feb 23, 2029 · High confidence
20-year base term ended May 18, 2026
Held by Wistron Corporation
Filed May 18, 2006 as application 11/437,517 · Granted Aug 23, 2011
Base term plus 1012 days of patent term adjustment (USPTO delay)
Today
2006
2029
Clock starts
May 18, 2006
May 18, 2006
Term ends
Feb 23, 2029
Feb 23, 2029
Granted
Aug 23, 2011
Aug 23, 2011
base term
patent term adjustment
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
1,012
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.
5
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 1012 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 May 18, 2006, when this application, 11/437,517, was filed | May 18, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1012 days, USPTO patent term adjustment record | Feb 23, 2029 | 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 | Feb 23, 2029 | High confidence |
This family
| US 8,004,497 | this patent Feb 2029 | Feb 2029 |
| US 8,174,507 | Term ended May 2026 | May 2026 |
| US 8,519,973 | Term ended May 2026 | May 2026 |
| US 10,209,833 | Term ended May 2026 | May 2026 |
| US 10,248,266 | Term ended May 2026 | May 2026 |
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 18, 2006 Reel 17924, frame 470 | Xiaoping, Jiang | Cypress Semiconductor Corporation | Assignment of Assignor's Interest |
| Aug 28, 2012 Reel 28863, frame 870 | Cypress Semiconductor Corporation | Morgan Stanley Senior Funding, Inc. | Patent Security Agreement |
| Mar 21, 2015 Reel 35240, frame 429 | Cypress Semiconductor Corporation; Spansion LLC | Morgan Stanley Senior Funding, Inc. | Security Interest |
| Apr 13, 2016 Reel 38259, frame 864 | Cypress Semiconductor Corporation | Creator Technology B.V. | Assignment of Assignor's Interest |
| Nov 3, 2020 Reel 58002, frame 470 | Cypress Semiconductor Corporation; Spansion LLC | Morgan Stanley Senior Funding, Inc. | Corrective Assignment to Correct the 8647899 Previously Recorded on Reel 035240 Frame 0429. Assignor(S) Hereby Confirms the Security Interst. |
| Apr 6, 2021 Reel 55829, frame 838 | Creator Technology B.V. | Wistron Corporation | Assignment of Assignor's Interest |
| Mar 16, 2022 Reel 59410, frame 438 | Mufg Union Bank, N.a. | Cypress Semiconductor Corporation; Spansion LLC | Release of Security Interest |
| Mar 16, 2022 reel/frame not recorded | Mufg Union Bank, N.a. | Cypress Semiconductor Corporation | Release of Security Interest |
| Mar 16, 2022 reel/frame not recorded | Mufg Union Bank, N.a. | Spansion LLC | Release of Security Interest |
| Jun 30, 2025 Reel 71755, frame 497 | Wistron Corporation | Mammoth Licensing, LLC | Assignment of Assignor's Interest |
| May 7, 2026 Reel 75567, frame 824 | Mammoth Licensing, LLC | Wistron Corporation | 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
Feb 2029
Term ends Feb 23, 2029. No further fees fall due before then
Note
The 1012 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
140
later US patents cite this one
That is top 5% of utility patents granted in 2011 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.