IPR Details
British Telecommunications plc's statement about IPR claimed in draft-briscoe-tsvwg-re-ecn-tcp-00.txt

Submitted: November 3, 2005

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.

Updated by

This IPR disclosure has been updated by IPR disclosure ID #1922, "British Telecommunications plc's statement about IPR claimed in draft-ietf-conex-abstract-mech-06".

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

Holder legal name
British Telecommunications plc

II. Patent Holder's Contact for License Application

Holder contact name
N W Lecky
Holder contact email
nigel.lecky@bt.com
Holder contact info

Head of Licensing
BT Group CTO
pp C3C, BT Centre
81 Newgate Street London EC1A 7AJ UK
T: +44 20 7356 4894
F: +44 1473 649030

III. Contact Information for the IETF Participant Whose Personal Belief Triggered this Disclosure

Name
Bob Briscoe
Email
bob.briscoe@bt.com
Other info

Chief Researcher, Networks Research Centre
BT Group CTO
pp B54/77 Sirius House Adastral Park
Martlesham Heath Ipswich IP5 3RE UK
T: +44 1473 645196

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

Internet-Draft
draft-briscoe-tsvwg-re-ecn-tcp ("Re-ECN: Adding Accountability for Causing Congestion to TCP/IP")
Revisions: 00

V. 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)

WO 2005/096566, WO 2005/096567, PCT/GB 2005/001737, GB 0501945.0 (EP 05355137.1), GB0502483.1 (EP 05255164.5).
Date: 30 March 2004, 30 March 2004, 7 May 2004, 31 January 2005, 7 February 2005.

Notes: WO 2005/096566 and WO 2005/096567 are published. Others are not yet published
at the time of making this declaration.

B. Does this disclosure relate to an unpublished pending patent application?:

Has patent pending
Yes

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 specification, is as follows(select one licensing declaration option only):

Licensing
See Text Below for Licensing Declaration
Licensing information, comments, notes, or URL for further information

BT hereby grants a royalty-free licence under 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 or for making, using, selling, distributing or otherwise lawfully
dealing in products or services that include an implementation of such
specification provided that any party wishing to be licensed under BT’s patent
claims grants a licence on reciprocal terms under its own Necessary Patent
Claims.

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

Submitter name
Ralph Orme
Submitter email
ralph.orme@bt.com

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