Also listed on Availigent, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Apr 27, 2027 · High confidence
20-year base term ends Apr 27, 2027
Held by Red Hat, Inc.
Filed Apr 27, 2007 as application 11/741,535 · Granted Mar 16, 2010
Base term, 20 years from filing
Today
2007
2027
Clock starts
Apr 27, 2007
Apr 27, 2007
Term ends
Apr 27, 2027
Apr 27, 2027
Granted
Mar 16, 2010
Mar 16, 2010
base term
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
None
Term adjustment
No prosecution delay on this record.
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.
7
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 is its 20-year base term, with no adjustment for 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 27, 2007, when this application, 11/741,535, was filed | Apr 27, 2027 | 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 27, 2027 | High confidence |
This family
| US 7,681,075 | this patent Apr 2027 | Apr 2027 |
| Application PCT/US2007/067948 | PCT application no patent term | no patent term |
| US 8,108,722 | In force Apr 2027 | Apr 2027 |
| US 8,433,951 | Lapsed on the fee record Apr 2025 | Apr 2025 |
| US 8,839,034 | Lapsed on the fee record Sep 2026 | Sep 2026 |
| US 9,069,729 | In force Apr 2027 | Apr 2027 |
| US 9,424,143 | In force Apr 2027 | Apr 2027 |
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 |
|---|---|---|---|
| Jun 20, 2007 Reel 19460, frame 847 | Havemose, Allan; Ngan, Ching-yuk Paul | Availigent, 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
Apr 2027
Term ends Apr 27, 2027. No further fees fall due before then
Citations
157
later US patents cite this one
That is top 5% of utility patents granted in 2010 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.