Term ended Sep 10, 2025 · High confidence
20-year base term ended Aug 26, 2025
Held by Red Hat, Inc.
Filed Aug 26, 2005 as application 11/213,630 · Granted Nov 6, 2007
Base term plus 15 days of patent term adjustment (USPTO delay)
Today
Term ended Sep 10, 2025
2005
2026
Clock starts
Aug 26, 2005
Aug 26, 2005
Term ended
Sep 10, 2025
Sep 10, 2025
Granted
Nov 6, 2007
Nov 6, 2007
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
15
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.
This patent's term runs 15 days past its 20-year base term on prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. 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 Aug 26, 2005, when this application, 11/213,630, was filed | Aug 26, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +15 days, USPTO patent term adjustment record | Sep 10, 2025 | 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 | term ended | High confidence |
| Computed term end | The steps above, in order | Sep 10, 2025 | High confidence |
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 |
|---|---|---|---|
| Apr 14, 2008 Reel 20807, frame 655 | Neary, Michael Oliver; Wason, Ashwani; Gulati, Shvetima; Ferval, Fabrice | Eternal Systems, Inc. | Assignment of Assignor's Interest |
| Oct 20, 2008 Reel 21691, frame 974 | Availigent, Inc. | Open Invention Network LLC | Assignment of Assignor's Interest |
| Dec 3, 2008 Reel 21912, frame 588 | Eternal Systems, Inc. | Availigent, Inc. | Change of Name |
| Sep 20, 2012 Reel 28994, frame 382 | Open Invention Network, LLC | Red Hat, Inc. | 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
Note
The 15 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
188
later US patents cite this one
That is top 5% of utility patents granted in 2007 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.