Lapsed Sep 24, 2010 on the fee record · High confidence
20-year base term ended Feb 21, 2021
Second maintenance fee unpaid; grace period ended.
Held by Nokia Siemens Networks Oy
Filed Feb 21, 2001 as application 09/790,170 · Granted Sep 24, 2002
Base term, 20 years from filing
Today
Lapsed Sep 24, 2010
2001
2026
Clock starts
Feb 21, 2001
Feb 21, 2001
No longer in force
Sep 24, 2010
Sep 24, 2010
Granted
Sep 24, 2002
Sep 24, 2002
Term would have run to
Feb 21, 2021
Feb 21, 2021
base term
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
None
Term adjustment
No prosecution delay on this record.
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.
42
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 21, 2021: its 20-year base term, with no 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 Feb 21, 2001, when this application, 09/790,170, was filed | Feb 21, 2021 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | 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 Sep 24, 2010 | High confidence |
| Computed term end | The steps above, in order | Sep 24, 2010 | High confidence |
This family
| US 6,928,168 | Lapsed on the fee record Aug 2017 | Aug 2017 |
| US 6,456,255 | this patent Sep 2010 | Sep 2010 |
| US 6,567,393 | Lapsed on the fee record May 2011 | May 2011 |
| US 6,778,834 | Term ended Oct 2022 | Oct 2022 |
| US 6,908,389 | Term ended Mar 2021 | Mar 2021 |
| US 6,954,443 | Lapsed on the fee record Oct 2013 | Oct 2013 |
| US 6,496,140 | Term ended Mar 2021 | Mar 2021 |
| US 6,907,568 | Term ended Mar 2023 | Mar 2023 |
8 of 42 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 7, 2001 Reel 11876, frame 415 | Lundahl, Nestori | Nokia Corporation | Assignment of Assignor's Interest |
| Feb 21, 2008 Reel 20550, frame 1 | Nokia Corporation | Nokia Siemens Networks Oy | 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.
Citations
9
later US patents cite this one
That is below the median of utility patents granted in 2002 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.