Also listed on Biofrontera Bioscience GmbH, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Apr 23, 2039 · High confidence
20-year base term ends Aug 23, 2038
Held by Biofrontera, Inc.
Filed Feb 19, 2021 as application 17/269,816 · Granted May 9, 2023
Base term plus 243 days of patent term adjustment (USPTO delay)
Today
2018
2039
Clock starts
Aug 23, 2018
Aug 23, 2018
Term ends
Apr 23, 2039
Apr 23, 2039
Granted
May 9, 2023
May 9, 2023
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
243
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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 243 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is paid so far. 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 Aug 23, 2018, when application PCT/EP2018/072823, the earliest non-provisional in its chain, was filed (this one was filed Feb 19, 2021) | Aug 23, 2038 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +243 days, USPTO patent term adjustment record | Apr 23, 2039 | 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 | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 23, 2039 | High confidence |
This family
| US 11,642,411 | this patent Apr 2039 | Apr 2039 |
| US 12,544,443 | In force Mar 2039 | Mar 2039 |
| Application 19/456,929 | Pending not computed | not computed |
3 of 4 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 |
|---|---|---|---|
| Feb 22, 2021 Reel 55355, frame 784 | Lübbert, Hermann | Biofrontera Bioscience GmbH | Assignment of Assignor's Interest |
| Nov 5, 2025 Reel 73509, frame 6 | Biofrontera Bioscience GmbH | Biofrontera, Inc. | Assignment of Assignor's Interest |
| Jun 8, 2026 Reel 75699, frame 753 | Biofrontera Bioscience GmbH | Biofrontera, Inc. | Corrective Assignment to Correct the Execution Date Previously Recorded on Reel 73509 Frame 6. Assignor(S) Hereby Confirms the Assignment. |
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
Apr 2039
Term ends Apr 23, 2039. Maintenance fees still fall due before then
Note
The 243 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
0
later US patents cite this one
That is below the median of utility patents granted in 2023 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.