Lapsed Feb 20, 2026 on the fee record · High confidence
20-year base term ends Apr 25, 2031
Second maintenance fee unpaid; grace period ended.
Held by Kyndryl, Inc.
Filed Jan 3, 2017 as application 15/396,928 · Granted Feb 20, 2018
Base term, 20 years from filing
Today
Lapsed Feb 20, 2026
2011
2031
Clock starts
Apr 25, 2011
Apr 25, 2011
No longer in force
Feb 20, 2026
Feb 20, 2026
Granted
Feb 20, 2018
Feb 20, 2018
Term would have run to
Apr 25, 2031
Apr 25, 2031
base term
after the term ends
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.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 9,576,122, to Apr 25, 2031. The term already ends on or before that date, so the cap shortened nothing.
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.
4
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 Apr 25, 2031: its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 25, 2011, when application 13/093,141, the earliest non-provisional in its chain, was filed (this one was filed Jan 3, 2017) | Apr 25, 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 | Disclaimer resolved from the filed document (refs US 9,576,122) | resolves to Apr 25, 2031, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed Feb 20, 2026 | High confidence |
| Computed term end | The steps above, in order | Feb 20, 2026 | High confidence |
This family
| US 9,576,122 | In force Apr 2032 | Apr 2032 |
| Application PCT/US2012/042507 | PCT application no patent term | no patent term |
| US 9,898,597 | this patent Feb 2026 | Feb 2026 |
| US 9,990,488 | Lapsed on the fee record Jun 2026 | Jun 2026 |
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 |
|---|---|---|---|
| Jan 3, 2017 Reel 40823, frame 648 | Lee, Chong | Softlayer Technologies, Inc. | Assignment of Assignor's 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.
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Alerts on its grants, lapses and transfers.
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 9,576,122, ends no earlier than this term, so it caps nothing.
Citations
0
later US patents cite this one
That is below the median of utility patents granted in 2018 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.