Provectus Biopharmaceuticals Announces Notices of Allowance and Award for U.S. Patents of Rose Bengal Sodium in Virology, Pediatric Solid Tumor Cancers, and Vaccines

KNOXVILLE, TN, March 12, 2024 (GLOBE NEWSWIRE) — Provectus Biopharmaceuticals, Inc. (“Provectus” or the “Company”) (OTCQB: PVCT) today announced that the United States Patent and Trademark Office (“USPTO”) has allowed patent application 17/212,723, titled “Novel Uses of Halogenated Xanthenes in Oncology and Virology.” The application covers the use of Provectus’s pharmaceutical-grade rose bengal sodium (“RBS”) drug substance for the treatment of infectious diseases, such as coronaviruses.

The USPTO has also allowed patent application 17/344,418, titled “In Vitro and Xenograft Anti-Tumor Activity of a Halogenated-Xanthene Against Refractory Pediatric Solid Tumors.” This prospective award covers the use of RBS in combination with one or more immune checkpoint inhibitors and is a continuation of U.S. patent 11,058,664 (2021), Provectus’s first for pediatric oncology.

The Company’s previously allowed patent application 17/488,430, titled “Halogenated Xanthenes as Vaccine Adjuvants” (December 2023) and covering RBS’s use as an adjuvant in vaccines to potentially make them work better, will be awarded on March 26, 2024 as U.S. patent 11,938,182.

Innovate Calgary, the innovation company of the University of Calgary in Alberta, Canada, is a co-assignee and Aru Narendran, MD, PhD, Professor of Pediatrics, Oncology, Biochemistry and Molecular Biology and Physiology and Pharmacology at the University’s Cumming School of Medicine is a co-inventor on all three patent awards.

About Provectus

Provectus Biopharmaceuticals, Inc. is a clinical-stage biotechnology company developing immunotherapy medicines for different diseases that are based on a class of synthetic small molecule immuno-catalysts called halogenated xanthenes. Provectus’s lead HX molecule is named rose bengal sodium.

Provectus’s medical science platform includes clinical development programs in oncology, dermatology, and ophthalmology; proof-of-concept in vivo development programs in oncology, hematology, full-thickness cutaneous wound healing, and canine cancers; and in vitro discovery programs in infectious diseases, tissue regeneration and repair, and proprietary targets.

Information about the Company’s clinical trials can be found at the National Institutes of Health (NIH) registry, For additional information about Provectus, please visit the Company’s website at

FORWARD-LOOKING STATEMENTS: The information in this press release may include “forward-looking statements,” within the meaning of U.S. securities legislation, relating to the business of Provectus and its affiliates, which are based on the opinions and estimates of Company management and are subject to a variety of risks and uncertainties and other factors that could cause actual events or results to differ materially from those projected in the forward-looking statements. Forward-looking statements are often, but not always, identified by the use of words such as “seek,” “anticipate,” “budget,” “plan,” “continue,” “estimate,” “expect,” “forecast,” “may,” “will,” “project,” “predict,” “potential,” “targeting,” “intend,” “could,” “might,” “should,” “believe,” and similar words suggesting future outcomes or statements regarding an outlook.

The safety and efficacy of the agents and/or uses under investigation have not been established. There is no guarantee that the agents will receive health authority approval or become commercially available in any country for the uses being investigated or that such agents as products will achieve any particular revenue levels.

Due to the risks, uncertainties, and assumptions inherent in forward-looking statements, readers should not place undue reliance on these forward-looking statements. The forward-looking statements contained in this press release are made as of the date hereof or as of the date specifically specified herein, and Provectus undertakes no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except in accordance with applicable securities laws. The forward-looking statements are expressly qualified by this cautionary statement.

Risks, uncertainties, and assumptions include those discussed in the Company’s filings with the Securities and Exchange Commission (SEC), including those described in Item 1A of:


Provectus Biopharmaceuticals, Inc.
Heather Raines, CPA
Chief Financial Officer
Phone: (866) 594-5999

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