Lapsed Jun 11, 2025 on the fee record · High confidence
20-year base term ends May 27, 2031
Third maintenance fee unpaid; grace period ended.
Held by Red Hat, Inc.
Filed May 27, 2011 as application 13/117,629 · Granted Jun 11, 2013
Base term, 20 years from filing
Today
Lapsed Jun 11, 2025
2011
2031
Clock starts
May 27, 2011
May 27, 2011
No longer in force
Jun 11, 2025
Jun 11, 2025
Granted
Jun 11, 2013
Jun 11, 2013
Term would have run to
May 27, 2031
May 27, 2031
base term
after the term ends
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
None
Term adjustment
No prosecution delay on this record.
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.
3
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 27, 2031: its 20-year base term, with no 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 May 27, 2011, when this application, 13/117,629, was filed | May 27, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | 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 Jun 11, 2025 | High confidence |
| Computed term end | The steps above, in order | Jun 11, 2025 | High confidence |
This family
| US 8,463,742 | this patent Jun 2025 | Jun 2025 |
| US 9,092,151 | In force May 2031 | May 2031 |
| US 8,898,107 | In force May 2031 | May 2031 |
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, 2011 Reel 26677, frame 860 | Floyd, Jered J.; Fortson, Michael; Westerlund Assar; Coburn, Jonathan | Permabit Technology Corp. | Assignment of Assignor's Interest |
| 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.
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Alerts on its grants, lapses and transfers.
Citations
20
later US patents cite this one
That is above 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.