Lapsed Jun 14, 2026 on the fee record · High confidence
20-year base term ends Sep 25, 2034
First maintenance fee unpaid; grace period ended.
Filed Mar 16, 2020 as application 16/819,817 · Granted Jun 14, 2022
Base term, 20 years from filing
Today
Lapsed Jun 14, 2026
2014
2034
Clock starts
Sep 25, 2014
Sep 25, 2014
No longer in force
Jun 14, 2026
Jun 14, 2026
Granted
Jun 14, 2022
Jun 14, 2022
Term would have run to
Sep 25, 2034
Sep 25, 2034
base term
after the term ends
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.
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.
7
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Sep 25, 2034: its 20-year base term, with no adjustment for prosecution delay. 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 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 16, 2020) | 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 | 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 | lapsed Jun 14, 2026 | High confidence |
| Computed term end | The steps above, in order | Jun 14, 2026 | High 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 | In force no later than Sep 2034 | no later than Sep 2034 |
| Application 16/585,357 | Abandoned not computed | not computed |
| US 11,357,824 | this patent 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 |
|---|---|---|---|
| Mar 24, 2020 Reel 52216, frame 318 | Pronutria Biosciences, Inc. | Axcella Health Inc. | Assignment of Assignor's Interest |
| Mar 24, 2020 Reel 52211, frame 526 | Hamill, Michael; Boghigian, Brett; Harvey, Caitlyn; Kramarczyk, John; Heard, Kathryn; Doherty, Michael; Silver, Nathaniel; Von Maltzahn, Geoffrey; Young, David; Rogers, Jameson; Samoyoa, Phillip; Basu, Subhayu; Vaidya, Vimal; Chen, Ying-ja; Rahman, Shaila; Berry, David | Pronutria Biosciences, Inc. | Assignment of Assignor's Interest |
| Aug 20, 2021 Reel 57249, frame 607 | Hamill, Michael; Boghigian, Brett; Harvey, Caitlyn; Kramarczyk, John; Heard, Kathryn; Doherty, Michael; Silver, Nathaniel; Von Maltzahn, Geoffrey; Young, David; Rogers, Jameson; Samayoa, Phillip; Basu, Subhayu; Vaidya, Vimal; Chen, Ying-ja; Rahman, Shaila; Berry, David | Pronutria Biosciences, Inc. | Corrective Assignment to Correct the 11TH Assignor's Name Previously Recorded at Reel: 052211 Frame: 0526. Assignor(S) Hereby Confirms the Assignment. |
| 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.
Citations
9
later US patents cite this one
That is top 25% of utility patents granted in 2022 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.