Term ends Dec 20, 2028 · Medium confidence
20-year base term ended Oct 29, 2022
Why Medium: No fee event states this; the fee state is read from the payments the fee record holds.
Held by Cisco Systems, Inc.
Filed Oct 29, 2002 as application 10/282,438 · Granted Nov 1, 2011
Base term plus 2244 days of patent term adjustment (USPTO delay)
Today
2002
2028
Clock starts
Oct 29, 2002
Oct 29, 2002
Term ends
Dec 20, 2028
Dec 20, 2028
Granted
Nov 1, 2011
Nov 1, 2011
base term
patent term adjustment
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
2,244
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.
2
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 2244 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are paid so far. Confidence: Medium. 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 Oct 29, 2002, when this application, 10/282,438, was filed | Oct 29, 2022 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +2244 days, USPTO patent term adjustment record | Dec 20, 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 | No fee event states this; the fee state is read from the payments the fee record holds | In force | Medium confidence |
| Computed term end | The steps above, in order | Dec 20, 2028 | Medium confidence |
This family
| US 8,051,211 | this patent Dec 2028 | Dec 2028 |
| Application PCT/US2003/034423 | PCT application no patent term | no patent term |
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 |
|---|---|---|---|
| Oct 29, 2002 Reel 13441, frame 627 | Finn, Norman W. | Cisco Technology, Inc. | Assignment of Assignor's Interest |
| Dec 3, 2014 Reel 34523, frame 654 | Cisco Technology, Inc. | Cisco Systems, Inc. | Confirmation of Assignment |
| Dec 18, 2014 Reel 34674, frame 182 | Cisco Technology, Inc. | Cisco Systems, Inc. | Corrective Assignment to Correct the Signature Page Inside Assignment Previously Recorded at Reel: 034523 Frame: 0654. Assignor(S) Hereby Confirms the Assignment. |
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
Dec 2028
Term ends Dec 20, 2028. No further fees fall due before then
Note
The 2244 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
43
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.