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AT&T's Statement about IPR related to draft-willis-sip-cookies, draft-dcsgroup-sip-proxy-proxy, draft-dcsgroup-sip-arch, draft-ietf-sip-update, draft-ietf-sip-state, draft-ietf-sip-privacy, draft-ietf-sip-manyfolks-resource, draft-ietf-sip-events, draf...

The text of the original IPR disclosure is available in the disclosure history.

Only those sections of the relevant entry form where the submitter provided information are displayed.

This IPR disclosure has been updated by IPR disclosure ID #579, "AT&T's statement about IPR claimed in RFC 3261".

This IPR disclosure has been updated by IPR disclosure ID #581, "AT&T's statement about IPR claimed in RFC 3262".

This IPR disclosure has been updated by IPR disclosure ID #582, "AT&T's statement about IPR claimed in RFC 3265".

This IPR disclosure has been updated by IPR disclosure ID #583, "AT&T's statement about IPR claimed in RFC 3603".

This IPR disclosure has been updated by IPR disclosure ID #584, "AT&T's statement about IPR claimed in RFC 3311".

This IPR disclosure has been updated by IPR disclosure ID #585, "AT&T's statement about IPR claimed in RFC 3312".

This IPR disclosure has been updated by IPR disclosure ID #586, "AT&T's statement about IPR claimed in RFC 4032".

Update this IPR disclosure. Note: Updates to IPR disclosures must only be made by authorized representatives of the original submitters. Updates will automatically be forwarded to the current Patent Holder's Contact and to the Submitter of the original IPR disclosure.

Submitted Date: February 25, 2002

'I'. Patent Holder/Applicant ("Patent Holder")
Legal Name: AT&T
'II'. Patent Holder's Contact for License Application
Name:Thomas F. Frost
Email:tfrost@att.com
Other Info:
(address,phone,etc)

Intellectual Property Vice President
AT&T Intellectual Property Licensing
180 Park Avenue
Florham Park, NJ 07932

'III'. IETF Document or Other Contribution to Which this IPR Disclosure Relates:
Internet-Draft: "SIP Cookies"
(draft-willis-sip-cookies)
Internet-Draft: "SIP proxy-to-proxy extensions for supporting DCS"
(draft-dcsgroup-sip-proxy-proxy)
Internet-Draft: "Architectural Considerations for Providing Carrier Class Telephony Services Utilizing SIP-based Distributed Call Control Mechanisms"
(draft-dcsgroup-sip-arch)
Internet-Draft: "The Session Initiation Protocol (SIP) UPDATE Method"
(draft-ietf-sip-update)
Internet-Draft: "SIP Extensions for supporting Distributed Call State"
(draft-ietf-sip-state)
Internet-Draft: "SIP Extensions for Network-Asserted Caller Identity and Privacy within Trusted Networks"
(draft-ietf-sip-privacy)
Internet-Draft: "Integration of Resource Management and Session Initiation Protocol (SIP)"
(draft-ietf-sip-manyfolks-resource)
Internet-Draft: "Session Initiation Protocol (SIP)-Specific Event Notification"
(draft-ietf-sip-events)
Internet-Draft: "Private Session Initiation Protocol (SIP) Extensions for Media Authorization"
(draft-ietf-sip-call-auth)
Internet-Draft: "Reliability of Provisional Responses in Session Initiation Protocol (SIP)"
(draft-ietf-sip-100rel)
'IV'. Disclosure of Patent Information (i.e., patents or patent applications required to be disclosed by Section 6 of RFC 3979)
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 No. 6,324,279

B. Does this disclosure relate to an unpublished pending patent application?: no
'V'. 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 specification, is as follows(select one licensing declaration option only):
See Text Below for Licensing Declaration
Licensing information, comments, notes, or URL for further information:

To the extent that the technology discussed in any of these Internet Drafts
becomes an IETF Standard, and to the extent claims of AT&T's patents are
required to implement the IETF Standard, AT&T agrees that, upon written
request, AT&T will offer, on a nondiscriminatory basis, non-exclusive
licenses on fair and reasonable terms under such patent claims to implement
that IETF Standard. AT&T's willingness to grant such licenses is conditioned
upon the prospective licensee granting a reciprocal license to AT&T under
any patents that the prospective licensee has to any technology required to
implement that IETF Standard.

Written requests for licenses may be sent to:

AT&T Intellectual Property Licensing
Room 2E37, Bldg. 104
180 Park Avenue
Florham Park, NJ 07932

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.
'VI'. Contact Information of Submitter of this Form
Name:Frost, Thomas F (Tom), ALCOO
Email:tfrost@att.com
'VII'. Other Notes:

draft-ietf-sip-100rel-xx, draft-ietf-sip-call-auth-xx, draft-ietf-sip-events-xx
draft-ietf-sip-manyfolks-resource-xx, draft-ietf-sip-privacy-xx,