IPR Details
AT&T's statement about IPR claimed in RFC 3262

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

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AT&T	Holder legal name	AT&T

II. Patent Holder's Contact for Licence Application

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Thomas F. Frost	Holder contact name	Richard Palazzo
tfrost@att.com	Holder contact email	rpalazzo@att.com
Intellectual Property Vice President AT&T Intellectual Property Licensing 180 Park Avenue Florham Park, NJ 07932	Holder contact info	Intellectual Property Senior Specialist AT&T Intellectual Property Licensing 180 Park Avenue Florham Park, NJ 07932 T: +1 973-236-6693

III. IETF Document or Other Contribution to Which this IPR Disclosure Relates

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Internet-Draft: draft-willis-sip-cookies ("SIP Cookies") Internet-Draft: draft-dcsgroup-sip-proxy-proxy ("SIP proxy-to-proxy extensions for supporting DCS") Internet-Draft: draft-dcsgroup-sip-arch ("Architectural Considerations for Providing Carrier Class Telephony Services Utilizing SIP-based Distributed Call Control Mechanisms") Internet-Draft: draft-ietf-sip-update ("The Session Initiation Protocol (SIP) UPDATE Method") Internet-Draft: draft-ietf-sip-state ("SIP Extensions for supporting Distributed Call State") Internet-Draft: draft-ietf-sip-privacy ("SIP Extensions for Network-Asserted Caller Identity and Privacy within Trusted Networks") Internet-Draft: draft-ietf-sip-manyfolks-resource ("Integration of Resource Management and Session Initiation Protocol (SIP)") Internet-Draft: draft-ietf-sip-events ("Session Initiation Protocol (SIP)-Specific Event Notification") Internet-Draft: draft-ietf-sip-call-auth ("Private Session Initiation Protocol (SIP) Extensions for Media Authorization") Internet-Draft: draft-ietf-sip-100rel ("Reliability of Provisional Responses in Session Initiation Protocol (SIP)")		RFC: RFC3262 ("Reliability of Provisional Responses in Session Initiation Protocol (SIP)")

IV. Disclosure of Patent Information i.e., patents or patent applications required to be disclosed by RFC 3979

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

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United States Patent No. 6,324,279	Patent, Serial, Publication, Registration, or Application/File number(s)	6,324,279; 10/179684 Date: 11/27/2001; 01/02/2003 Country: USA Notes: Also unpublished patent application(s).

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

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No	Has patent pending	Yes

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):

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See Text Below for Licensing Declaration	Licensing	See Text Below for Licensing Declaration
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	Licensing information, comments, notes, or URL for further information	This is to advise the IETF that AT&T believes it owns intellectual property (identified in section V above) that may relate to RFC 3262. To the extent that the technology discussed in the above referenced IETF document(s) 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 Director, Intellectual Property 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

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Frost, Thomas F (Tom), ALCOO	Submitter name	Richard Palazzo
tfrost@att.com	Submitter email	rpalazzo@att.com