ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,544,443, issued on Feb. 10, was assigned to Biofrontera Bioscience GmbH (Leverkusen, Germany).

"Photodynamic therapy comprising two light exposures at different wavelengths" was invented by Hermann Lubbert (Leverkusen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a composition comprising a photosensitizer use in prevention or treatment of dermatological disease in a patient, wherein the composition is used in the following order of steps: (a) topical application or subcutaneous injection of said composition to an area of the skin of said patient, (b) exposure of at least said area of the skin to light with a wa...