Term ended Feb 7, 2025 · High confidence
20-year base term ended Jun 27, 2021
Held by Knapp Investment Company Limited
Filed Sep 7, 2006 as application 11/517,017 · Granted Feb 28, 2012
Base term plus 1321 days of patent term adjustment (USPTO delay)
Today
Term ended Feb 7, 2025
2001
2026
Clock starts
Jun 27, 2001
Jun 27, 2001
Term ended
Feb 7, 2025
Feb 7, 2025
Granted
Feb 28, 2012
Feb 28, 2012
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
1,321
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.
12
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 1321 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 Jun 27, 2001, when application PCT/GB2001/002857, the earliest non-provisional in its chain, was filed (this one was filed Sep 7, 2006) | Jun 27, 2021 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1321 days, USPTO patent term adjustment record | Feb 7, 2025 | 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 | Feb 7, 2025 | High confidence |
This family
| US 7,096,226 | Term ended Jun 2022 | Jun 2022 |
| Application 11/452,851 | Abandoned not computed | not computed |
| US 8,572,123 | Term ended May 2026 | May 2026 |
| US 9,038,108 | In force Nov 2028 | Nov 2028 |
| Application 11/517,015 | Abandoned not computed | not computed |
| US 8,126,313 | this patent Feb 2025 | Feb 2025 |
| US 8,005,345 | In force Jan 2030 | Jan 2030 |
| US 7,970,260 | In force Sep 2029 | Sep 2029 |
8 of 12 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 |
|---|---|---|---|
| Dec 28, 2006 Reel 18686, frame 550 | Moore, Richard G.; Rachamadugu, Sreenivas | Verizon Business Network Services Inc. | Assignment of Assignor's Interest |
| Dec 28, 2006 Reel 18686, frame 829 | Haot, Max | Mci Worldcom Ltd. | Assignment of Assignor's Interest |
| Jan 19, 2007 Reel 18781, frame 435 | Haot, Max | Verizon UK Limited | Assignment of Assignor's Interest |
| Oct 1, 2012 Reel 29054, frame 566 | Verizon UK Limited | Verizon Patent and Licensing Inc. | Assignment of Assignor's Interest |
| Nov 12, 2012 Reel 29277, frame 97 | Verizon Patent and Licensing Inc. | Knapp Investment Company Limited | 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.
What's changing
Note
The 1321 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
46
later US patents cite this one
That is top 25% of utility patents granted in 2012 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.