Lapsed Nov 19, 2025 on the fee record · High confidence
20-year base term ends Mar 16, 2027
Third maintenance fee unpaid; grace period ended.
Held by Ericsson AB
Filed Mar 16, 2007 as application 11/725,125 · Granted Nov 19, 2013
Base term, 20 years from filing, plus 1508 days of patent term adjustment (USPTO delay)
Today
Lapsed Nov 19, 2025
2007
2031
Clock starts
Mar 16, 2007
Mar 16, 2007
No longer in force
Nov 19, 2025
Nov 19, 2025
Granted
Nov 19, 2013
Nov 19, 2013
Term would have run to
May 2, 2031
May 2, 2031
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
1,508
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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.
10
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 May 2, 2031: its 20-year base term plus 1508 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 Mar 16, 2007, when this application, 11/725,125, was filed | Mar 16, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1508 days, USPTO patent term adjustment record | May 2, 2031 | 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 | 2 of 3 maintenance fees paid | lapsed Nov 19, 2025 | High confidence |
| Computed term end | The steps above, in order | Nov 19, 2025 | High confidence |
This family
| US 7,130,263 | Lapsed on the fee record Oct 2018 | Oct 2018 |
| US 7,573,814 | Lapsed on the fee record Aug 2017 | Aug 2017 |
| US 7,477,642 | In force Nov 2026 | Nov 2026 |
| US 8,554,949 | Lapsed on the fee record Oct 2021 | Oct 2021 |
| US 8,588,742 | this patent Nov 2025 | Nov 2025 |
| US 8,599,849 | Term ended Oct 2026 | Oct 2026 |
| US 9,350,646 | Term ended no later than Aug 2025 | no later than Aug 2025 |
| US 9,860,163 | Term ended Jan 2025 | Jan 2025 |
8 of 10 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 |
|---|---|---|---|
| Mar 16, 2007 Reel 19109, frame 53 | Oswal, Anand K.; Yeevani, Ramesh C.; Lakshmikanthan, Ramanathan | Redback Networks Inc. | Assignment of Assignor's Interest |
| Feb 26, 2010 Reel 24002, frame 363 | Redback Networks Inc. | Ericsson AB | 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 1508 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
4
later US patents cite this one
That is below the median 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.