Also listed on VL50, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Jun 14, 2040 · High confidence
20-year base term ends Dec 14, 2038
Filed Aug 30, 2022 as application 17/898,947 · Granted Feb 3, 2026
Base term plus 548 days of patent term adjustment (USPTO delay)
Today
2018
2040
Clock starts
Dec 14, 2018
Dec 14, 2018
Term ends
Jun 14, 2040
Jun 14, 2040
Granted
Feb 3, 2026
Feb 3, 2026
base term
patent term adjustment
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
548
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 12,357,653, to Jun 14, 2040. The term already ends on or before that date, so the cap shortened nothing.
0 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.
13
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 548 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. 0 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 Dec 14, 2018, when application PCT/US2018/065836, the earliest non-provisional in its chain, was filed (this one was filed Aug 30, 2022) | Dec 14, 2038 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +548 days, USPTO patent term adjustment record | Jun 14, 2040 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 12,357,653) | resolves to Jun 14, 2040, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jun 14, 2040 | High confidence |
This family
| Application PCT/US2018/065836 | PCT application no patent term | no patent term |
| US 10,953,033 | In force Dec 2038 | Dec 2038 |
| US 12,357,653 | In force Aug 2042 | Aug 2042 |
| US 11,058,706 | In force Dec 2038 | Dec 2038 |
| US 11,160,822 | In force Dec 2038 | Dec 2038 |
| US 11,458,156 | In force Dec 2038 | Dec 2038 |
| US 12,539,309 | this patent Jun 2040 | Jun 2040 |
| US 11,844,759 | In force Dec 2038 | Dec 2038 |
8 of 13 applications in this family shown, earliest filings first. 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 |
|---|---|---|---|
| Dec 12, 2022 Reel 62051, frame 522 | Stewart, Morag Helen; Cifuentes-rojas, Catherine; Paek, Ki Young | VL50, Inc. | Assignment of Assignor's Interest |
| Dec 12, 2022 Reel 62051, frame 529 | Kahvejian, Avak; Plugis, Nicholas McCartney; De Boer, Alexandra Sophie; Weinstein, Erica Gabrielle; Trousil, Sebastian | Flagship Pioneering, Inc. | Assignment of Assignor's Interest |
| Dec 12, 2022 Reel 62051, frame 560 | VL50, Inc. | Flagship Pioneering, Inc. | Assignment of Assignor's Interest |
| Dec 12, 2022 Reel 62051, frame 565 | Flagship Pioneering, Inc. | Flagship Pioneering Innovations VI, LLC | 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
Jun 2040
Term ends Jun 14, 2040. Maintenance fees still fall due before then
Note
The 548 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 12,357,653, ends no earlier than this term, so it caps nothing.
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.