Collateral for a security interest recorded Jul 29, 2025 (Wells Fargo Bank, National Association).
Surrendered on reissue Aug 6, 2013 · Low confidence
20-year base term ended Mar 20, 2026
Surrendered on reissue Aug 6, 2013 · its term and maintenance fees continue in US RE44,407.
Held by Microprobe, Inc.
Filed Mar 20, 2006 as application 11/385,289 · Granted Dec 25, 2007
Base term, 20 years from filing, plus 108 days of patent term adjustment (USPTO delay)
Today
Surrendered Aug 6, 2013
2006
2026
Clock starts
Mar 20, 2006
Mar 20, 2006
No longer in force
Aug 6, 2013
Aug 6, 2013
Granted
Dec 25, 2007
Dec 25, 2007
Term would have run to
Jul 6, 2026
Jul 6, 2026
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
108
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 of 3
Maintenance fees paid
Fees paid on this patent before its reissue. Those after fall due on the reissue, which carries the term on.
33
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 108 days past its 20-year base term on prosecution delay. Confidence: Low. 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 Mar 20, 2006, when this application, 11/385,289, was filed | Mar 20, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +108 days, USPTO patent term adjustment record | Jul 6, 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 | No fee event states this; the fee state is read from the payments the fee record holds; the fee record shows no payment for this window, and USPTO's status still reads "Patented Case" | no change | Low confidence |
| Reissue | US RE44,407 issued Aug 6, 2013, and this patent's term continues in it (35 U.S.C. 251, 252) | surrendered Aug 6, 2013 | High confidence |
| Surrendered on reissue | The steps above, in order | Aug 6, 2013 | Low confidence |
This family
| US 7,148,709 | Term ended Jul 2024 | Jul 2024 |
| US 7,091,729 | Lapsed on the fee record Aug 2018 | Aug 2018 |
| US 7,312,617 | this patent Aug 2013 | Aug 2013 |
| US 7,733,101 | Term ended Dec 2024 | Dec 2024 |
| US 7,759,949 | Term ended Jan 2025 | Jan 2025 |
| US 7,659,739 | Term ended Sep 2026 | Sep 2026 |
| US 7,786,740 | In force Feb 2027 | Feb 2027 |
| US 7,649,367 | In force Dec 2027 | Dec 2027 |
8 of 33 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 |
|---|---|---|---|
| Mar 20, 2006 Reel 18031, frame 808 | Kister, January | Microprobe, Inc. | Assignment of Assignor's Interest |
| 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 29, 2025 Reel 72263, frame 272 | FormFactor, Inc. | Wells Fargo Bank, National Association, as Administrative Agent | Security 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 108 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
31
later US patents cite this one
That is top 25% of utility patents granted in 2007 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.