Collateral for a security interest recorded Jul 30, 2025 (Western Alliance Bank).
Term ends Apr 17, 2037 · Medium confidence
20-year base term ends Apr 17, 2037
Why Medium: A parent in the chain could not be resolved.
Held by Native Microbials, Inc.
Filed Jul 23, 2018 as application 16/042,369 · Granted Apr 28, 2020
Base term, 20 years from filing
Today
2017
2037
Clock starts
Apr 17, 2017
Apr 17, 2017
Term ends
Apr 17, 2037
Apr 17, 2037
Granted
Apr 28, 2020
Apr 28, 2020
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.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 10,624,366, to Apr 17, 2037. The term already ends on or before that date, so the cap shortened nothing.
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.
35
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 resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 Apr 17, 2017, when application PCT/US2017/028015, the earliest non-provisional in its chain, was filed (this one was filed Jul 23, 2018); a parent in its chain could not be resolved (the next row) | Apr 17, 2037 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 10,624,366) | resolves to Apr 17, 2037, no earlier than this term, so no change | High 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 | Apr 17, 2037 | Medium confidence |
This family
| US 9,540,676 | In force Jun 2036 | Jun 2036 |
| US 10,844,419 | In force Jun 2036 | Jun 2036 |
| US 10,851,399 | In force Jun 2036 | Jun 2036 |
| Application PCT/US2017/012573 | PCT application no patent term | no patent term |
| US 9,938,558 | In force Jun 2036 | Jun 2036 |
| US 10,870,877 | In force Jun 2036 | Jun 2036 |
| US 10,398,154 | In force Jan 2037 | Jan 2037 |
| US 10,632,157 | this patent Apr 2037 | Apr 2037 |
8 of 35 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 |
|---|---|---|---|
| Aug 28, 2018 Reel 46727, frame 773 | Embree, Mallory; Gogul, Grant; Martino, Cameron; Pitt, Norm | Ascus Biosciences, Inc. | Assignment of Assignor's Interest |
| Sep 9, 2020 Reel 53732, frame 496 | Ascus Biosciences, Inc. | Native Microbials, Inc. | Change of Name |
| Jul 30, 2025 Reel 72324, frame 1 | Native Microbials, Inc. | Western Alliance Bank | Security 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.
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Alerts on its grants, lapses and transfers.
What's changing
Apr 2037
Term ends Apr 17, 2037. Maintenance fees still fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 10,624,366, ends no earlier than this term, so it caps nothing.
Citations
8
later US patents cite this one
That is top 25% of utility patents granted in 2020 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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.