Term ends Apr 13, 2028 · High confidence
20-year base term ends Dec 11, 2026
Held by Koninklijke KPN N.V.
Filed Dec 11, 2006 as application 11/637,514 · Granted Oct 11, 2011
Base term plus 489 days of patent term adjustment (USPTO delay)
Today
2006
2028
Clock starts
Dec 11, 2006
Dec 11, 2006
Term ends
Apr 13, 2028
Apr 13, 2028
Granted
Oct 11, 2011
Oct 11, 2011
base term
patent term adjustment
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
489
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.
9
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 489 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Dec 11, 2006, when this application, 11/637,514, was filed | Dec 11, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +489 days, USPTO patent term adjustment record | Apr 13, 2028 | 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 | In force | High confidence |
| Computed term end | The steps above, in order | Apr 13, 2028 | High confidence |
This family
| US 8,037,212 | this patent Apr 2028 | Apr 2028 |
| US 8,230,135 | In force Dec 2026 | Dec 2026 |
| US 8,402,179 | In force Dec 2026 | Dec 2026 |
| US 10,389,666 | In force Dec 2026 | Dec 2026 |
| US RE46,328 | In force Dec 2026 | Dec 2026 |
| US 10,735,364 | In force Dec 2026 | Dec 2026 |
| US 11,438,293 | In force Dec 2026 | Dec 2026 |
| US 12,021,810 | In force Dec 2026 | Dec 2026 |
8 of 9 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 5, 2007 Reel 18856, frame 445 | Taylor, Paulo; Rueb, Jan-joost; Bakker, Onno | Ebuddy Holding B.V. | Assignment of Assignor's Interest |
| Nov 29, 2017 Reel 44253, frame 785 | Ebuddy Holding B.V. | Ebuddy Technologies B.V. | Assignment of Assignor's Interest |
| Aug 5, 2026 Reel 76125, frame 502 | Ebuddy Technologies B.V. | Koninklijke KPN N.V. | 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
Apr 2028
Term ends Apr 13, 2028. No further fees fall due before then
Note
The 489 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 2011 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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.