Collateral for a security interest recorded Mar 2, 2026 (Oxford Finance LLC).
Term ends Mar 15, 2038 · Low confidence
20-year base term ends Mar 15, 2038
Held by Orca Biosystems, Inc.
Filed Apr 18, 2019 as application 16/388,095 · Granted Dec 8, 2020
Base term, 20 years from filing
Today
2018
2038
Clock starts
Mar 15, 2018
Mar 15, 2018
Term ends
Mar 15, 2038
Mar 15, 2038
Granted
Dec 8, 2020
Dec 8, 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 10,300,090, to Mar 15, 2038. 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.
4
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: Low. 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 Mar 15, 2018, when application 15/922,709, the earliest non-provisional in its chain, was filed (this one was filed Apr 18, 2019); a parent in its chain could not be resolved (the next row) | Mar 15, 2038 | 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 10,300,090) | resolves to Mar 15, 2038, 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 |
| Further caveats on record | The record names parents not resolved: 15922709 | Low confidence overall | Low confidence |
| Computed term end | The steps above, in order | Mar 15, 2038 | Low confidence |
This family
| US 10,300,090 | In force Mar 2038 | Mar 2038 |
| US 10,857,183 | this patent Mar 2038 | Mar 2038 |
| US 12,011,461 | In force May 2040 | May 2040 |
| US 12,735,678 | In force Mar 2038 | Mar 2038 |
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 |
|---|---|---|---|
| Jun 25, 2019 Reel 49580, frame 708 | Dimov, Ivan K.; Fernhoff, Nathaniel; Sheehan, Kevin | Orca Biosystems, Inc. | Assignment of Assignor's Interest |
| Mar 2, 2026 Reel 73939, frame 71 | Orca Biosystems, Inc. | Oxford Finance LLC | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Mar 2038
Term ends Mar 15, 2038. Maintenance fees still fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 10,300,090, ends no earlier than this term, so it caps nothing.
Citations
2
later US patents cite this one
That is below the median 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.