Term ends Nov 15, 2026 · High confidence
20-year base term ends Nov 15, 2026
Held by Sobi, Inc.
Filed Jan 5, 2017 as application 15/398,851 · Granted Dec 31, 2019
Base term, 20 years from filing
Today
2006
2026
Clock starts
Nov 15, 2006
Nov 15, 2006
Term ends
Nov 15, 2026
Nov 15, 2026
Granted
Dec 31, 2019
Dec 31, 2019
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.
1 of 1
Maintenance fees paid
One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it paid.
This patent's term is its 20-year base term, with no adjustment for prosecution delay. 1 of 1 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 Nov 15, 2006, when application PCT/SG2006/000352, the earliest non-provisional in its chain, was filed (this one was filed Jan 5, 2017) | Nov 15, 2026 | 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 | 1 of 1 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Nov 15, 2026 | 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 |
|---|---|---|---|
| Sep 28, 2022 Reel 61244, frame 195 | Blanchard, Stephanie; Lee, Cheng Hsia Angeline; Nagaraj, Harish Kumar Mysore; Poulsen, Anders; Sun, Eric T.; Tan, Yee Ling Evelyn; William, Anthony Deodaunia | S*bio Pte Ltd. | Assignment of Assignor's Interest |
| Sep 28, 2022 Reel 61244, frame 203 | S*bio Pte Ltd. | Cell Therapeutics, Inc. | Assignment of Assignor's Interest |
| Sep 28, 2022 Reel 61561, frame 650 | Cell Therapeutics, Inc. | Cti Biopharma Corp. | Change of Name |
| Oct 3, 2024 Reel 68782, frame 512 | Cti Biopharma Corp. | Sobi, Inc. | Merger |
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.
What's changing
Nov 2026
Term ends Nov 15, 2026. No further fees fall due before then
Citations
We have no citation count for this patent yet. That is not the same as never having been cited.
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.