Also listed on Softlayer Technologies, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Feb 5, 2033 · High confidence
20-year base term ends Jul 27, 2031
Held by Kyndryl, Inc.
Filed Jul 27, 2011 as application 13/191,583 · Granted Apr 7, 2020
Base term plus 559 days of patent term adjustment (USPTO delay)
Today
2011
2033
Clock starts
Jul 27, 2011
Jul 27, 2011
Term ends
Feb 5, 2033
Feb 5, 2033
Granted
Apr 7, 2020
Apr 7, 2020
base term
patent term adjustment
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
559
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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 559 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is paid so far. 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 Jul 27, 2011, when this application, 13/191,583, was filed | Jul 27, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +559 days, USPTO patent term adjustment record | Feb 5, 2033 | 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 | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Feb 5, 2033 | 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 |
|---|---|---|---|
| Aug 26, 2011 Reel 26816, frame 281 | Johnson, Bradley; D'auria, John; Gulledge, Jason | Softlayer Technologies, Inc. | Assignment of Assignor's Interest |
| Nov 29, 2011 Reel 27290, frame 855 | Softlayer Technologies, Inc. | Suntrust Bank, As Collateral Agent | Security Agreement |
| Jul 8, 2013 Reel 30763, frame 666 | Suntrust Bank | Softlayer Technologies, Inc. | Release of Security Interest |
| Jul 5, 2021 Reel 56754, frame 340 | Software Technologies, Inc. | International Business Machines Corporation | Assignment of Assignor's Interest |
| Jul 22, 2021 Reel 56963, frame 528 | Softlayer Technologies, Inc. | International Business Machines Corporation | Corrective Assignment to Correct the Conveying Party's Name Previously Recorded at Reel: 056754 Frame: 0340. Assignor(S) Hereby Confirms the Assignment . |
| Oct 13, 2021 Reel 57885, frame 644 | International Business Machines Corporation | Kyndryl, 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
Feb 2033
Term ends Feb 5, 2033. Maintenance fees still fall due before then
Note
The 559 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
2
later US patents cite this one
That is below the median of utility patents granted in 2020 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.