Collateral for a security interest recorded Jun 5, 2026 (Wells Fargo Bank, National Association).
Term ends Mar 23, 2030 · Medium confidence
20-year base term ends Aug 30, 2027
Why Medium: A parent in the chain could not be resolved.
Held by Prolacta Bioscience, Inc.
Filed Nov 29, 2007 as application 11/947,580 · Granted Oct 1, 2013
Base term plus 936 days of patent term adjustment (USPTO delay)
Today
2007
2030
Clock starts
Aug 30, 2007
Aug 30, 2007
Term ends
Mar 23, 2030
Mar 23, 2030
Granted
Oct 1, 2013
Oct 1, 2013
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
936
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 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.
20
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 936 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Aug 30, 2007, when application PCT/US2007/019234, the earliest non-provisional in its chain, was filed (this one was filed Nov 29, 2007); a parent in its chain could not be resolved (the next row) | Aug 30, 2027 | 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 | +936 days, USPTO patent term adjustment record | Mar 23, 2030 | 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Mar 23, 2030 | Medium confidence |
This family
| Application PCT/US2006/036827 | PCT application no patent term | no patent term |
| US 8,545,920 | this patent Mar 2030 | Mar 2030 |
| Application PCT/US2007/085969 | PCT application no patent term | no patent term |
| US 7,943,315 | Term ended Nov 2026 | Nov 2026 |
| US 8,278,046 | Term ended Sep 2026 | Sep 2026 |
| US 9,149,052 | In force Dec 2032 | Dec 2032 |
| US 8,628,921 | Surrendered on reissue Oct 2020 | Oct 2020 |
| Application 13/946,020 | Abandoned not computed | not computed |
8 of 20 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 |
|---|---|---|---|
| Jan 30, 2008 Reel 20436, frame 316 | Medo, Elena M.; Lee, Martin L.; Rechtman, David J.; Fournell, Joseph | 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
Mar 2030
Term ends Mar 23, 2030. No further fees fall due before then
Note
The 936 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
26
later US patents cite this one
That is top 25% of utility patents granted in 2013 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.