0 patents currently held, every record listed here
7 more in force are now held by other companies
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
This portfolio holds none of the 7 US patents in force on its record. from the record
Of the 7 now held by other companies, 6 name Biofrontera Inc. as their current owner, and 1 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
0
Ending by 2030
none
Next term end
When these terms end
Each bar runs from grant to computed term end. 2023 to 2043.
US 12,544,443
Photodynamic Therapy Comprising Two Light Exposures at Different Wavelengths
Mar 8, 2039
US 11,642,411
Photodynamic Therapy Comprising Two Light Exposures at Different Wavelengths
Apr 23, 2039
US 12,472,374
Illumination Device for Photodynamic Therapy, Method for Treating a Skin Disease and Method for Operating an Illumination Device
Oct 15, 2040
20272031203520392043
6 pending applications: term is not computable until grant.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
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
None of the currently held patents qualifies as notable.
Formerly held, still cited
Notable
Ends Feb 2028 · High confidence
The most cited patent in this portfolio, cited by 39 later US patents, top 5% of utility patents granted in 2023 in our data. Protection runs to 2028.
now held by Biofrontera, Inc.
Also notable
Ends Apr 2039 · High confidence
The earliest of the three still in force, granted 2023 and renewed since. Its term ends first, in 2039.
now held by Biofrontera, Inc.
Also notable
Ends Oct 2040 · High confidence
A family of 6 related applications built on the 2025 grant. Too new for citation comparison; protection runs to 2040.
now held by Biofrontera, Inc.
Fee deadlines
No maintenance fee falls due on this company's record before Nov 10, 2027.
Recent changes
Nothing was recorded against this company's patents in the last 90 days.
Patents held now
Soonest term end first.
Also on record: 7 patents in force now held by others · 6 applications pending. List them
Sources and methods
Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built
Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.