Term ends Nov 18, 2026 · High confidence
20-year base term ended Jun 7, 2026
Filed Jun 7, 2006 as application 11/447,853 · Granted Feb 16, 2010
Base term plus 164 days of patent term adjustment (USPTO delay)
Today
2006
2026
Clock starts
Jun 7, 2006
Jun 7, 2006
Term ends
Nov 18, 2026
Nov 18, 2026
Granted
Feb 16, 2010
Feb 16, 2010
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
164
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.
This patent's term runs 164 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 Jun 7, 2006, when this application, 11/447,853, was filed | Jun 7, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +164 days, USPTO patent term adjustment record | Nov 18, 2026 | 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 | Nov 18, 2026 | High confidence |
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 |
|---|---|---|---|
| Jun 7, 2006 Reel 17980, frame 491 | Inatomi, Koichi | Fujitsu Limited | Assignment of Assignor's Interest |
| Dec 9, 2008 Reel 21976, frame 89 | Fujitsu Limited | Fujitsu Microelectronics Limited | Assignment of Assignor's Interest |
| Sep 27, 2010 Reel 25046, frame 478 | Fujitsu Microelectronics Limited | Fujitsu Semiconductor Limited | Change of Name |
| Sep 11, 2013 Reel 31205, frame 461 | Fujitsu Semiconductor Limited | Spansion LLC | Assignment of Assignor's Interest |
| Mar 21, 2015 Reel 35240, frame 429 | Cypress Semiconductor Corporation; Spansion LLC | Morgan Stanley Senior Funding, Inc. | Security Interest |
| Jul 1, 2015 Reel 36049, frame 581 | Spansion, LLC | Cypress Semiconductor Corporation | Assignment of Assignor's Interest |
| Oct 28, 2019 Reel 50896, frame 366 | Morgan Stanley Senior Funding, Inc. | Mufg Union Bank, N.a. | Assignment and Assumption of Security Interest in Intellectual Property |
| 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. |
| 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 |
| Nov 14, 2025 Reel 73571, frame 456 | Cypress Semiconductor Corporation | Infineon Technologies Americas Corp. | Merger |
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
Nov 2026
Term ends Nov 18, 2026. No further fees fall due before then
Note
The 164 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
14
later US patents cite this one
That is above the median of utility patents granted in 2010 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.