The following was received June 20, 2000 From: Don Hall Mr. Stephen Coya Executive Director Internet Engineering Task Force 1895 Preston White Drive, Suite 100 Reston, Virginia 20191-5434 Re: IPR Statement S/MIME Dear Mr. Coya: Don Hall, was awarded U.S. Patent No. 5,126,728 in 1992 that may comprise methods used in S/MIME. S/MIME methods may be derived from intellectual property described in said patent. If S/MIME is established as an Internet Standard, to the extent that Don Halls's Intellectual property is comprised therein, nonexclusive licenses, on relevant patent claims, will be made openly available for a reasonable fee, without discrimination. These licenses will be granted for implementation and use as defined in the various MIME related RFCs if it is approved as a standard. Parties interested in obtaining a license may contact: Don Hall 703-527-3688 cosmictk@ex-pressnet.com