Also listed on Omga Liquidating, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Nov 24, 2041 · High confidence
20-year base term ends Sep 23, 2040
Held by Sepia Therapeutics, Inc.
Filed Sep 23, 2020 as application 17/029,820 · Granted May 21, 2024
Base term plus 427 days of patent term adjustment (USPTO delay)
Today
2020
2041
Clock starts
Sep 23, 2020
Sep 23, 2020
Term ends
Nov 24, 2041
Nov 24, 2041
Granted
May 21, 2024
May 21, 2024
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
427
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
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 427 days past its 20-year base term on prosecution delay. 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 Sep 23, 2020, when this application, 17/029,820, was filed | Sep 23, 2040 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +427 days, USPTO patent term adjustment record | Nov 24, 2041 | 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 | 0 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Nov 24, 2041 | High confidence |
This family
| US 11,987,791 | this patent Nov 2041 | Nov 2041 |
| Application 18/637,630 | Pending not computed | not computed |
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 3, 2021 Reel 56117, frame 406 | Smith, Jesse Jerome; Kennedy, Jodi Michelle; Farelli, Jeremiah D.; Goss, Kendrick Alan; Scheidegger, Adam Walter; Rao, Timsi; Cobaugh, Christian Wessel; Kassa, Yoseph | Omega Therapeutics, Inc. | Assignment of Assignor's Interest |
| Feb 10, 2025 Reel 70167, frame 243 | Omega Therapeutics, Inc. | Pioneering Medicines 08- B, Inc. | Security Interest |
| Feb 23, 2026 Reel 73860, frame 886 | Omga Liquidating, Inc. (F/K/A Omega Therapeutics, Inc.) | Flagship Labs 114, Inc. | Assignment of Assignor's Interest |
| Apr 13, 2026 Reel 75384, frame 788 | Omega Therapeutics, Inc. | Omga Liquidating, Inc. | Change of Name |
| Apr 13, 2026 Reel 75384, frame 845 | Flagship Labs 114, Inc. | Sepia Therapeutics, Inc. | Change of Name |
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 2041
Term ends Nov 24, 2041. Maintenance fees still fall due before then
Note
The 427 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
0
later US patents cite this one
Fewer than half of the utility patents granted in 2024 in our data have been cited yet, so we show the count and do not rank on it.
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.