Term ended May 18, 2026 · Medium confidence
20-year base term ended May 18, 2026
Why Medium: A parent in the chain could not be resolved.
Held by Wistron Corporation
Filed Aug 23, 2013 as application 13/975,078 · Granted Feb 19, 2019
Base term, 20 years from filing
Today
Term ended May 18, 2026
2006
2026
Clock starts
May 18, 2006
May 18, 2006
Term ended
May 18, 2026
May 18, 2026
Granted
Feb 19, 2019
Feb 19, 2019
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.
1 of 1
Maintenance fees paid
One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it 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 is its 20-year base term, with no adjustment for prosecution delay. 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 May 18, 2006, when application 11/437,517, the earliest non-provisional in its chain, was filed (this one was filed Aug 23, 2013); a parent in its chain could not be resolved (the next row) | May 18, 2026 | 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 | 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 | 1 of 1 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | May 18, 2026 | Medium confidence |
This family
| US 8,004,497 | In force 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 | this patent 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 |
|---|---|---|---|
| Nov 14, 2013 Reel 31636, frame 105 | Cypress Semiconductor Corporation | Morgan Stanley Senior Funding, Inc. | Patent Security Agreement |
| Jan 13, 2014 Reel 31954, frame 773 | Xiaoping, Jiang | Cypress Semiconductor Corporation | Assignment of Assignor's Interest |
| 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.
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Alerts on its grants, lapses and transfers.
Citations
0
later US patents cite this one
That is below the median of utility patents granted in 2019 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.