Collateral for a security interest recorded Jun 5, 2026 (Wells Fargo Bank, National Association).
Term ends no later than Feb 21, 2035 · Medium confidence
20-year base term ends Mar 5, 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.
Held by Prolacta Bioscience, Inc.
Filed May 15, 2019 as application 16/412,699 · Granted Aug 23, 2022
Base term plus 353 days of patent term adjustment (USPTO delay)
Today
2014
2035
Clock starts
Mar 5, 2014
Mar 5, 2014
Ends no later than
Feb 21, 2035
Feb 21, 2035
Granted
Aug 23, 2022
Aug 23, 2022
base term
patent term adjustment
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
353
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
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.
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 runs 353 days past its 20-year base term on 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 Mar 5, 2014, when application 14/198,432, the earliest non-provisional in its chain, was filed (this one was filed May 15, 2019) | Mar 5, 2034 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +353 days, USPTO patent term adjustment record | Feb 21, 2035 | 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 Feb 21, 2035 | Medium confidence |
This family
| US 11,122,813 | In force May 2034 | May 2034 |
| US 11,419,342 | this patent no later than Feb 2035 | no later than Feb 2035 |
| US 12,063,943 | In force May 2034 | May 2034 |
| Application 18/759,044 | 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 |
|---|---|---|---|
| Oct 4, 2019 Reel 50631, frame 848 | Elster, Scott; Fournell, Joseph; Eaker, Scott | Prolacta Bioscience, Inc. | Assignment of Assignor's Interest |
| Dec 21, 2023 Reel 65935, frame 511 | Prolacta Bioscience, Inc. | Hayfin Services LLP, as Collateral Agent | Security Interest |
| Jun 5, 2026 Reel 74862, frame 454 | Hayfin Services LLP, as Agent | Prolacta Bioscience, Inc. | Release of Security Interest |
| Jun 5, 2026 Reel 74871, frame 441 | Prolacta Bioscience, Inc. | Wells Fargo Bank, National Association | 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
Feb 2035
Term ends no later than Feb 21, 2035. 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
Note
The 353 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Feb 21, 2035. We will not guess the cap.
Citations
2
later US patents cite this one
That is above the median 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
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.