Also listed on FormFactor Beaverton, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ended Oct 20, 2026 · High confidence
20-year base term ended Apr 24, 2026
Held by FormFactor, Inc.
Filed Apr 24, 2006 as application 11/410,783 · Granted Nov 11, 2008
Base term plus 179 days of patent term adjustment (USPTO delay)
Today
Term ended Oct 20, 2026
2006
2026
Clock starts
Apr 24, 2006
Apr 24, 2006
Term ended
Oct 20, 2026
Oct 20, 2026
Granted
Nov 11, 2008
Nov 11, 2008
base term
patent term adjustment
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
179
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 179 days past its 20-year base term on prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. 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 Apr 24, 2006, when this application, 11/410,783, was filed | Apr 24, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +179 days, USPTO patent term adjustment record | Oct 20, 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 | term ended | High confidence |
| Computed term end | The steps above, in order | Oct 20, 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 |
|---|---|---|---|
| Apr 24, 2006 Reel 17813, frame 129 | Campbell, Richard L.; Andrews, Michael | Cascade Microtech, Inc. | Assignment of Assignor's Interest |
| Jul 18, 2006 Reel 18105, frame 594 | Campbell, Richard L.; Andrews, Michael; Bui, Lynh | Cascade Microtech, Inc. | Re-Record to Add the Name of the Third Assignor, Previously Recorded on Reel 017813 Frame 0129. |
| Jul 12, 2016 Reel 39184, frame 280 | FormFactor, Inc.; Astria Semiconductor Holdings, Inc.; Cascade Microtech, Inc.; Micro-Probe Incorporated | HSBC Bank USA, National Association | Security Interest in United States Patents and Trademarks |
| Jul 18, 2018 Reel 46573, frame 664 | Cascade Microtech, Inc. | FormFactor Beaverton, Inc. | Change of Name |
| Sep 1, 2021 Reel 57393, frame 609 | FormFactor Beaverton, Inc. | FormFactor, Inc. | Assignment of Assignor's Interest |
| Aug 7, 2025 Reel 72853, frame 1 | HSBC Bank USA, National Association | FormFactor, Inc. | Release of Security 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.
What's changing
Note
The 179 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 2008 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.