Skip to Content


Prospective Grant of Exclusive License: “Anthrax Toxin Fusion Proteins and Uses Thereof,” “Anthrax Toxin Fusion Proteins and Related Methods,” and “Targeting Agents to the MHC Class I Processing Pathway with an Anthrax Toxin Fusion Protein”

Document Details

Information about this document as published in the Federal Register.

Published Document

This document has been published in the Federal Register. Use the PDF linked in the document sidebar for the official electronic format.

Start Preamble Start Printed Page 58933


National Institutes of Health, Public Health Service, DHHS.




This notice, in accordance with 35 U.S.C. 209(c)(1) and 37 CFR Part 404.7(a)(1)(i), that the Food and Drug Administration and the Department of Health and Human Services is contemplating the grant of an exclusive license to practice the inventions embodied in “Anthrax toxin fusion proteins and uses thereof”, by Leppla et al., issued as U.S. patent 5,591,631 on January 7, 1997; “Anthrax toxin fusion proteins and related methods” by Leppla et al., issued as U.S. patent 5,677,274 on October 14, 1997; and “Targeting agents to the MHC class I processing pathway with an anthrax toxin fusion protein” by Klimpel et al. filed internationally as PCT/US97/16452, and claiming priority to U.S. provisional patent application 60/025,270, filed September 17, 1996 to Avant Immunotherapeutics, Inc., which is located in Needham, MA. The patent rights in these inventions have been assigned to the United States of America. This technology is currently licensed to Avant Immunotherapeutics, Inc. on a non-exclusive basis in the area of immune diseases.

The prospective exclusive license territory will be worldwide and the field of use may be limited to vaccines and immunotherapeutics for the prevention or treatment of the following human and animal diseases: Human immunodeficiency, hepatitis B virus and hepatitis C virus.


Only written comments and/or license applications that are received by the National Institutes of Health on or before November 30, 2004 will be considered.


Requests for copies of the patent, inquiries, comments and other materials relating to the contemplated exclusive license should be directed to: Brenda J. Hefti, Technology Licensing Specialist, Office of Technology Transfer, National Institutes of Health, 6011 Executive Boulevard, Suite 325, Rockville, MD 20852-3804. Telephone: (301) 435-4632; Facsimile: (301) 402-0220; and e-mail:

End Preamble Start Supplemental Information


In this technology, an anthrax binary toxin system provides antigen access to MHC Class I processing pathway. The Bacillus antracis binary toxin consists of two proteins, a protective antigen (PA) combines with lethal factor (LF) to make anthrax toxin. In this system PA binds to the protein receptor on the target cell, is cleaved to produce the PA63 fragment, PA63 binds to LF and the binary anthrax toxin is endocytosed and transported into the cell to be processed by the MHC Class I processing pathway. Advantages of this system include its ability to accommodate large fusion proteins and the fact that anthrax toxin is not widely used for immunization.

The prospective exclusive license will be royalty-bearing and will comply with the terms and conditions of 35 U.S.C. 209 and 37 CFR Part 404.7. The prospective exclusive license may be granted unless within sixty (60) days from the date of this published notice, the NIH receives written evidence and argument that establish that the grant of the license would not be consistent with the requirements of 35 U.S.C. 209 and 37 CFR 404.7.

Applications for a license in the field of use filed in response to this notice will be treated as objections to the grant of the contemplated exclusive license. Comments and objections submitted to this notice will not be made available for public inspection and, to the extent permitted by law, will not be released under the Freedom of Information Act, 5 U.S.C. 552.

Start Signature

Dated: September 27, 2004.

Steven M. Ferguson,

Director, Division of Technology Development and Transfer, Office of Technology Transfer, National Institutes of Health.

End Signature End Supplemental Information

[FR Doc. 04-22146 Filed 9-30-04; 8:45 am]