Term ends Apr 30, 2028 · High confidence
20-year base term ended Jul 29, 2025
Held by Valtrus Innovations Limited
Filed Jul 29, 2005 as application 11/192,774 · Granted Sep 29, 2009
Base term plus 1006 days of patent term adjustment (USPTO delay)
Today
2005
2028
Clock starts
Jul 29, 2005
Jul 29, 2005
Term ends
Apr 30, 2028
Apr 30, 2028
Granted
Sep 29, 2009
Sep 29, 2009
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
1,006
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.
3
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 1006 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 Jul 29, 2005, when this application, 11/192,774, was filed | Jul 29, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1006 days, USPTO patent term adjustment record | Apr 30, 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 30, 2028 | High confidence |
This family
| US 7,596,614 | this patent Apr 2028 | Apr 2028 |
| US 7,975,048 | Term ended Jul 2025 | Jul 2025 |
| US 8,055,768 | Term ended Jul 2025 | Jul 2025 |
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 |
|---|---|---|---|
| Jul 29, 2005 Reel 16831, frame 292 | Saunderson, Peter; Smith, John P. | 3COM Corporation | Assignment of Assignor's Interest |
| Jul 6, 2010 Reel 24630, frame 820 | 3COM Corporation | Hewlett-Packard Company | Merger |
| Jul 15, 2010 Reel 25039, frame 844 | 3COM Corporation | Hewlett-Packard Company | Corrective Assignment to Correct the See Attached |
| Dec 6, 2011 Reel 27329, frame 44 | Hewlett-Packard Company | Hewlett-packard Development Company, L.p. | Assignment of Assignor's Interest |
| May 1, 2012 Reel 28911, frame 846 | Hewlett-Packard Company | Hewlett-packard Development Company, L.p. | Corrective Assignment Previuosly Recorded on Reel 027329 Frame 0001 and 0044. |
| Nov 9, 2015 Reel 37079, frame 1 | Hewlett-packard Development Company, L.p. | Hewlett Packard Enterprise Development LP | Assignment of Assignor's Interest |
| Jan 26, 2021 Reel 55269, frame 1 | Hewlett Packard Enterprise Development LP; Hewlett Packard Enterprise Company | OT Patent Escrow, LLC | Patent Assignment, Security Interest, and Lien Agreement |
| Feb 24, 2021 Reel 55403, frame 1 | OT Patent Escrow, LLC | Valtrus Innovations Limited | 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 30, 2028. No further fees fall due before then
Note
The 1006 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
149
later US patents cite this one
That is top 5% of utility patents granted in 2009 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.