Lapsed May 20, 2011 on the fee record · High confidence
20-year base term ended Feb 27, 2021
Second maintenance fee unpaid; grace period ended.
Held by Nokia Siemens Networks Oy
Filed Feb 27, 2001 as application 09/794,934 · Granted May 20, 2003
Base term, 20 years from filing, plus 261 days of patent term adjustment (USPTO delay)
Today
Lapsed May 20, 2011
2001
2026
Clock starts
Feb 27, 2001
Feb 27, 2001
No longer in force
May 20, 2011
May 20, 2011
Granted
May 20, 2003
May 20, 2003
Term would have run to
Nov 15, 2021
Nov 15, 2021
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
261
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.
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 Nov 15, 2021: its 20-year base term plus 261 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 Feb 27, 2001, when this application, 09/794,934, was filed | Feb 27, 2021 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +261 days, USPTO patent term adjustment record | Nov 15, 2021 | 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 May 20, 2011 | High confidence |
| Computed term end | The steps above, in order | May 20, 2011 | High confidence |
This family
| US 6,928,168 | Lapsed on the fee record Aug 2017 | Aug 2017 |
| US 6,456,255 | Lapsed on the fee record Sep 2010 | Sep 2010 |
| US 6,567,393 | this patent 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 |
|---|---|---|---|
| May 1, 2001 Reel 11760, frame 579 | Hamalainen, Seppo; Vepsalainen, Jussi | Nokia Networks Oy | Assignment of Assignor's Interest |
| Apr 23, 2008 Reel 20837, frame 781 | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 261 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
3
later US patents cite this one
That is below the median of utility patents granted in 2003 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.