Microsoft's Statement about IPR claimed in RFC 3972
Date: 22 November 2005 

This document is an IETF Patent Disclosure and Licensing Declaration
Template and is submitted to inform the IETF of a) patent information
regarding the IETF document or contribution listed in Section IV, and b)
a Patent Holder's intention with respect to the licensing of its
necessary patent claims. No actual license is implied by submission of
this template. Please complete and submit a separate template for each
IETF document or contribution to which the disclosed patent information
relates.

I. Patent Holder/Applicant ("Patent Holder")

Legal Name: Microsoft Corporation

II. Patent Holder's Contact for License Application

Name: Microsoft Standards Inquiries

Title:

Department:

Address: One Microsoft Way, Redmond, WA 98052

Telephone:

Fax:

Email: stdsreq@microsoft.com


III. Contact Information for the IETF Participant Whose Personal
Belief Triggered the Disclosure in this Template (Optional)

Name:

Title:

Department:

Address:

Telephone:

Fax:

Email:

IV. IETF Document or Contribution to Which Patent Disclosure Relates

Title: Cryptographically Generated Addresses (CGA)

RFC Number or I-D Tag: RFC 3972

Other Designations:

V. Disclosure of Patent Information (i.e., patents or patent
applications required to be disclosed by Section 6 of RFC 3668)

A. For granted patents or published pending patent applications,
please provide the following information:

Patent, Serial, Publication, Registration, or Application/File
number(s):

United States Patent Application Serial Number: 303951.01



United States Patent Application Serial Number: 301073.02



Date(s) granted or applied for (YYYY-MM-DD):
303951.01 - 2003/03/27
301073.02 - 2002/09/12

Country(ies):
United States

B. Does your disclosure relate to an unpublished pending patent
application?

Select one: Yes ______ No ___X___



C. If an Internet-Draft or RFC includes multiple parts and it is not
reasonably apparent which part of such an Internet-Draft or RFC is
alleged to be covered by the patent information disclosed in Section
V(A) or V(B), it is helpful if the discloser identifies here the
sections of the Internet-Draft or RFC that are alleged to be so
covered.

VI. Licensing Declaration

The Patent Holder states that its position with respect to licensing
any patent claims contained in the patent(s) or patent
application(s)disclosed above that would necessarily be infringed by
implementation of the technology required by the relevant IETF
specification("Necessary Patent Claims"), for the purpose of
implementing such a specification, is as follows (select one licensing
declaration option only):

a) ___ No License Required for Implementers
Check here if commitment to forgo a license is limited
solely to standards-track RFCs ___

b) __X_ Royalty-Free, Reasonable, and Non-Discriminatory License to
All Implementers
Check here if this commitment to license is limited solely to
standards-track RFCs __X_

c) ___ Reasonable and Non-Discriminatory License to All
Implementers with Possible Royalty/Fee
Check here if this commitment to license is limited solely to
standards-track RFCs ___

d) ___ Licensing Declaration to be Provided Later (implies a
willingness to commit to the provisions of a), b), or c)
above; otherwise, the next option - "Unwilling to Commit to
the Provisions of a), b), or c) Above" - must be selected)

e) ___ Unwilling to Commit to the Provisions of a), b), or c)
Above

NOTE: The individual submitting this template represents and warrants
that he or she is authorized by the Patent Holder to agree to the
above-selected licensing declaration.

VII. Contact Information of Submitter of this Form (if different from
IETF Participant in Section III above)

Name: Microsoft Standards Inquiries

Title:

Department:

Address: One Microsoft Way, Redmond, WA 98052

Telephone:

Fax:

Email: stdsreq@microsoft.com

VIII. Other Notes: This is an update to the IPR disclosure that
Microsoft submitted on July 2, 2003
(http://www.ietf.org/ietf/IPR/microsoft-ipr-draft-ietf-send-cga.txt).