Lapsed Apr 13, 2018 on the fee record · High confidence
20-year base term ends Nov 21, 2026
Second maintenance fee unpaid; grace period ended.
Held by Littelfuse, Inc.
Filed Jul 29, 2007 as application 11/881,896 · Granted Apr 13, 2010
Base term, 20 years from filing, plus 99 days of patent term adjustment (USPTO delay)
Today
Lapsed Apr 13, 2018
2006
2027
Clock starts
Nov 21, 2006
Nov 21, 2006
No longer in force
Apr 13, 2018
Apr 13, 2018
Granted
Apr 13, 2010
Apr 13, 2010
Term would have run to
Feb 28, 2027
Feb 28, 2027
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
99
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
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
20
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Feb 28, 2027: its 20-year base term plus 99 days of term adjustment for prosecution delay. 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 Nov 21, 2006, when applications 11/562,222 and 11/562,289, the earliest non-provisional applications in its chain, were filed (this one was filed Jul 29, 2007) | Nov 21, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +99 days, USPTO patent term adjustment record | Feb 28, 2027 | 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 3 maintenance fees paid | lapsed Apr 13, 2018 | High confidence |
| Computed term end | The steps above, in order | Apr 13, 2018 | High confidence |
This family
| US 7,825,491 | Lapsed on the fee record Nov 2018 | Nov 2018 |
| Application 11/562,222 | Abandoned not computed | not computed |
| Application PCT/US2006/045291 | PCT application no patent term | no patent term |
| Application PCT/US2006/045292 | PCT application no patent term | no patent term |
| US 7,695,644 | this patent Apr 2018 | Apr 2018 |
| Application PCT/US2007/074677 | PCT application no patent term | no patent term |
| Application PCT/US2007/074676 | PCT application no patent term | no patent term |
| Application 11/829,951 | Abandoned not computed | not computed |
8 of 20 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 |
|---|---|---|---|
| Jun 5, 2008 Reel 21052, frame 105 | Kosowsky, Lex; Fleming, Robert | Shocking Technologies Inc. | Assignment of Assignor's Interest |
| Jul 23, 2010 Reel 24733, frame 299 | Shocking Technologies, Inc. | Silicon Valley Bank | Security Agreement |
| Nov 20, 2012 Reel 29333, frame 469 | Silicon Valley Bank | Shocking Technologies, Inc. | Release of Security Interest |
| Nov 20, 2012 Reel 29340, frame 806 | Shocking Technologies, Inc. | Littelfuse, Inc. | Security Agreement |
| Jan 23, 2014 Reel 32123, frame 747 | Shocking Technologies, Inc. | Littelfuse, Inc. | 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
Note
The 99 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
19
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.