    Network Working Group                                            J. Lowe
    Request for Comments: 1822                                           IBM
    Category: Informational                                      August 1995

          A Grant of Rights to Use a Specific IBM patent with Photuris

    Status of this Memo

       This memo provides information for the Internet community.  This memo
       does not specify an Internet standard of any kind.  Distribution of
       this memo is unlimited.

    Note:

       This RFC is NOT a standard. It is an official public record of a
       grant by IBM Corporation for the use of a specific IBM patent in
       conjunction with the Photuris key management protocol.

    Purpose

       This Request for Comments records a grant by IBM Corporation to
       permit the conditional free use of one of its patents.  This grant is
       made to help facilitate adoption of the Internet Key Management
       Protocol contribution IBM has offered to the IETF. It should be noted
       that the confirmatory license mentioned is optional.  The grant is
       made in this RFC and parties have it even if they do not request a
       confirmation from IBM.

    A Grant of Rights to Use IBM US Patent 5,148,479

       IBM hereby covenants that it will not assert its US Patent 5,148,479
       or its non-US counterparts against any party that implements Photuris
       or any derivative that includes IBM's IKMP contribution, and operates
       in compliance with Photuris or such derivative, when Photuris or such
       derivative is employed in connection with any Internet Protocol.

       This grant of rights will terminate with respect to any party that
       asserts a patent it owns, directly or indirectly, against IBM for
       IBM's implementation of and operation in compliance with Photuris or
       any derivative, as defined above.  The termination will occur as of
       the date the patent is asserted against IBM.

    Lowe                         Informational                      [Page 1]

    RFC 1822                    IKMP Patent Use                  August 1995

       A written confirmation of this grant, and/or a license under any
       other IBM patent under IBM's then-current terms, conditions and
       royalty rates, can be obtained by sending a request to:

               John W. Lowe
               IBM Corporation
               500 Columbus Avenue
               Thornwood, New York  10594

    Security Considerations

       The referenced protocol is a security-related protocol.

    Author's Address

       John W. Lowe
       IBM Corporation
       500 Columbus Avenue
       Thornwood, New York 10594
       USA

    Lowe                         Informational                      [Page 2]