Also listed on Softlayer Technologies, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Oct 29, 2029 · High confidence
20-year base term ends Sep 28, 2029
Held by Kyndryl, Inc.
Filed Aug 14, 2015 as application 14/826,555 · Granted Mar 21, 2017
Base term plus 31 days of patent term adjustment (USPTO delay)
Today
2009
2029
Clock starts
Sep 28, 2009
Sep 28, 2009
Term ends
Oct 29, 2029
Oct 29, 2029
Granted
Mar 21, 2017
Mar 21, 2017
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
31
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 9,135,133, to Oct 29, 2029. The term already ends on or before that date, so the cap shortened nothing.
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.
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 31 days past its 20-year base term on prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 2 of 3 maintenance fees are 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 Sep 28, 2009, when application 12/568,455, the earliest non-provisional in its chain, was filed (this one was filed Aug 14, 2015) | Sep 28, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +31 days, USPTO patent term adjustment record | Oct 29, 2029 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 9,135,133) | resolves to Oct 29, 2029, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Oct 29, 2029 | High confidence |
This family
| US 9,135,133 | Lapsed on the fee record Sep 2019 | Sep 2019 |
| US 9,602,601 | this patent Oct 2029 | Oct 2029 |
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 |
|---|---|---|---|
| May 29, 2019 Reel 49301, frame 627 | McAloon, Daniel; Reese, Joshua Logan | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Oct 2029
Term ends Oct 29, 2029. Maintenance fees still fall due before then
Note
The 31 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 9,135,133, 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 2017 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.