Also listed on Rainstor, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Mar 2, 2028 · High confidence
20-year base term ended Jun 12, 2026
Held by Teradata US, Inc.
Filed Jun 12, 2006 as application 11/451,845 · Granted Sep 18, 2012
Base term plus 629 days of patent term adjustment (USPTO delay)
Today
2006
2028
Clock starts
Jun 12, 2006
Jun 12, 2006
Term ends
Mar 2, 2028
Mar 2, 2028
Granted
Sep 18, 2012
Sep 18, 2012
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
629
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.
2
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 629 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 Jun 12, 2006, when this application, 11/451,845, was filed | Jun 12, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +629 days, USPTO patent term adjustment record | Mar 2, 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 | Mar 2, 2028 | High confidence |
This family
| US 8,271,452 | this patent Mar 2028 | Mar 2028 |
| Application 13/315,051 | Abandoned not computed | not computed |
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 |
|---|---|---|---|
| Sep 11, 2006 Reel 18245, frame 773 | Longshaw, Tom | Clearpace Software Limited | Assignment of Assignor's Interest |
| Nov 5, 2010 Reel 25327, frame 648 | Clear Pace Software Limited | Rainstor Limited | Change of Name |
| Jul 9, 2012 Reel 28510, frame 288 | Rainstor Limited | Silicon Valley Bank | Security Agreement |
| Jul 12, 2012 Reel 28550, frame 6 | Rainstor Limited | Kreos Capital III (UK) Limited | Security Agreement |
| Feb 13, 2015 Reel 34960, frame 273 | Silicon Valley Bank, a California Corp. | Rainstor, Inc. | Release of Security Interest |
| Feb 19, 2015 Reel 34982, frame 130 | Kreos Capital III (UK) Limited | Rainstor, Inc. | Release of Security Interest |
| Apr 15, 2015 Reel 35440, frame 486 | Rainstor Limited | Teradata (UK) Limited | Assignment of Assignor's Interest |
| May 22, 2015 Reel 35702, frame 664 | Teradata (UK) Limited | Teradata US, 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
Mar 2028
Term ends Mar 2, 2028. No further fees fall due before then
Note
The 629 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
122
later US patents cite this one
That is top 5% of utility patents granted in 2012 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.