Lapsed Jan 15, 2021 on the fee record · Medium confidence
20-year base term ends Mar 18, 2028
Why Medium: A terminal disclaimer is on file (approved) with no resolved reference, so the term may end earlier.
Second maintenance fee unpaid; grace period ended.
Held by Certusview Technologies, LLC
Filed Jan 16, 2009 as application 12/355,300 · Granted Jan 15, 2013
Base term, 20 years from filing, plus 923 days of patent term adjustment (USPTO delay)
Today
Lapsed Jan 15, 2021
2008
2030
Clock starts
Mar 18, 2008
Mar 18, 2008
No longer in force
Jan 15, 2021
Jan 15, 2021
Granted
Jan 15, 2013
Jan 15, 2013
Term would have run to
Sep 27, 2030
Sep 27, 2030
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
923
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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.
129
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 Sep 27, 2030: its 20-year base term plus 923 days of term adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 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 Mar 18, 2008, when application 12/050,555, the earliest non-provisional in its chain, was filed (this one was filed Jan 16, 2009) | Mar 18, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +923 days, USPTO patent term adjustment record | Sep 27, 2030 | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed Jan 15, 2021 | High confidence |
| Computed term end | The steps above, in order | Jan 15, 2021 | Medium confidence |
This family
| US 8,532,342 | In force Apr 2031 | Apr 2031 |
| US 8,249,306 | In force no later than May 2031 | no later than May 2031 |
| US 9,659,268 | In force Jun 2029 | Jun 2029 |
| US 8,340,359 | In force Jan 2030 | Jan 2030 |
| US 8,934,678 | In force Mar 2028 | Mar 2028 |
| US 8,290,215 | In force no later than Dec 2030 | no later than Dec 2030 |
| US 8,355,542 | this patent Jan 2021 | Jan 2021 |
| US 8,300,895 | In force Mar 2030 | Mar 2030 |
8 of 129 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 |
|---|---|---|---|
| Feb 11, 2009 Reel 22238, frame 835 | Nielsen, Steven; Chambers, Curtis | Dycom Technology, LLC | Assignment of Assignor's Interest |
| Feb 11, 2009 Reel 22238, frame 848 | Dycom Technology, LLC | Certusview Technologies, LLC | Change of Name |
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.
What's changing
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 923 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Jan 15, 2021. We will not guess the cap.
Citations
145
later US patents cite this one
That is top 5% of utility patents granted in 2013 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.