Also listed on Permabit Technology Corporation, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Jan 30, 2030 · High confidence
20-year base term ends Apr 4, 2027
Held by Red Hat, Inc.
Filed Apr 4, 2007 as application 11/696,654 · Granted Jul 12, 2011
Base term plus 1032 days of patent term adjustment (USPTO delay)
Today
2007
2030
Clock starts
Apr 4, 2007
Apr 4, 2007
Term ends
Jan 30, 2030
Jan 30, 2030
Granted
Jul 12, 2011
Jul 12, 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
1,032
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 1032 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 Apr 4, 2007, when this application, 11/696,654, was filed | Apr 4, 2027 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1032 days, USPTO patent term adjustment record | Jan 30, 2030 | 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 | Jan 30, 2030 | 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 |
|---|---|---|---|
| Jul 19, 2007 Reel 19576, frame 450 | Margolus, Norman H.; Jaskiewicz, Thomas | Permabit, Inc. | Assignment of Assignor's Interest |
| Nov 27, 2007 Reel 20155, frame 885 | Permabit, Inc. | Burnside Acquisition, LLC | Assignment of Assignor's Interest |
| Jan 28, 2010 Reel 23861, frame 432 | Burnside Acquisition, LLC | Permabit Technology Corporation | Merger |
| Oct 11, 2017 Reel 43833, frame 304 | Permabit Technology Corporation | 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
Jan 2030
Term ends Jan 30, 2030. No further fees fall due before then
Note
The 1032 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
34
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.