Also listed on Pronutria, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends no later than Sep 25, 2034 · Medium confidence
20-year base term ends Sep 25, 2034
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Filed Mar 25, 2016 as application 15/081,004 · Granted Nov 5, 2019
Base term, 20 years from filing
Today
2014
2034
Clock starts
Sep 25, 2014
Sep 25, 2014
Ends no later than
Sep 25, 2034
Sep 25, 2034
Granted
Nov 5, 2019
Nov 5, 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.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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.
7
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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 1 of 3 maintenance fees is paid so far. Confidence: Medium. 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 25, 2014, when applications PCT/US2014/057526, PCT/US2014/057527 and PCT/US2014/057528, the earliest non-provisional applications in its chain, were filed (this one was filed Mar 25, 2016) | Sep 25, 2034 | 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 on file (approved), reference document not resolved | no cap applied, and none guessed | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | no later than Sep 25, 2034 | Medium confidence |
This family
| Application PCT/US2014/057528 | PCT application no patent term | no patent term |
| Application PCT/US2014/057527 | PCT application no patent term | no patent term |
| Application PCT/US2014/057526 | PCT application no patent term | no patent term |
| US 10,463,711 | this patent no later than Sep 2034 | no later than Sep 2034 |
| Application 16/585,357 | Abandoned not computed | not computed |
| US 11,357,824 | Lapsed on the fee record Jun 2026 | Jun 2026 |
| Application 17/699,862 | Abandoned 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 |
|---|---|---|---|
| Oct 6, 2016 Reel 40249, frame 741 | Pronutria Biosciences, Inc. | Axcella Health Inc. | Assignment of Assignor's Interest |
| Dec 7, 2018 Reel 47708, frame 616 | Hamill, Michael; Boghigian, Brett; Harvey, Caitlyn; Berry, David; Young, David; Von Maltzahn, Geoffrey; Kramarczyk, John; Rogers, Jameson; Heard, Kathryn; Doherty, Michael; Silver, Nathaniel; Samayoa, Phillip; Basu, Subhayu; Rahman, Shaila; Vaidya, Vimal; Chen, Ying-ja | Pronutria Biosciences, Inc. | Assignment of Assignor's Interest |
| Sep 2, 2021 Reel 57435, frame 136 | Axcella Health Inc. | SLR Investment Corp., as Agent | Intellectual Property Security Agreement |
| Dec 15, 2022 Reel 62137, frame 569 | SLR Investment Corp. | Axcella Health Inc. | Release of Security Interest |
| Dec 20, 2023 Reel 66125, frame 228 | Axcella Health Inc. | Axcella (Assignment for the Benefit of Creditors), 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.
What's changing
Sep 2034
Term ends no later than Sep 25, 2034. Maintenance fees still fall due before then
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Sep 25, 2034. We will not guess the cap.
Citations
42
later US patents cite this one
That is top 5% of utility patents granted in 2019 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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. 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.