Also listed on Biofrontera Bioscience GmbH, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Mar 8, 2039 · High confidence
20-year base term ends Aug 23, 2038
Held by Biofrontera, Inc.
Filed Mar 22, 2023 as application 18/188,373 · Granted Feb 10, 2026
Base term plus 197 days of patent term adjustment (USPTO delay)
Today
2018
2039
Clock starts
Aug 23, 2018
Aug 23, 2018
Term ends
Mar 8, 2039
Mar 8, 2039
Granted
Feb 10, 2026
Feb 10, 2026
base term
patent term adjustment
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
197
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 11,642,411, to Mar 8, 2039. The term already ends on or before that date, so the cap shortened nothing.
0 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 197 days past its 20-year base term on prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 0 of 3 maintenance fees are 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 Mar 22, 2023) | Aug 23, 2038 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +197 days, USPTO patent term adjustment record | Mar 8, 2039 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 11,642,411) | resolves to Mar 8, 2039, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Mar 8, 2039 | High confidence |
This family
| US 11,642,411 | In force Apr 2039 | Apr 2039 |
| US 12,544,443 | this patent 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 |
|---|---|---|---|
| Jul 24, 2025 Reel 72281, frame 640 | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Mar 2039
Term ends Mar 8, 2039. Maintenance fees still fall due before then
Note
The 197 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 11,642,411, ends no earlier than this term, so it caps nothing.
Citations
We have no citation count for this patent yet. That is not the same as never having been cited.
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.