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IPR Details
Nortel Networks Statement on patents pertaining to MPLS about IPR claimed in RFC 3209

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

Submitted: January 28, 2005 under the rules in RFC 3668.

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.



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

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Nortel Networks Holder legal name Nortel Networks Limited

II. Patent Holder's Contact for License Application

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Gib Ritenour Holder contact name Richard Weiss Holder contact email

Technical Standards & Patent Strategy

Holder contact info

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

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Designations for Other Contributions:
RFC3209 ("RSVP-TE: Extensions to RSVP for LSP Tunnels")
Designations for Other Contributions:

IV. Disclosure of Patent Information
i.e., patents or patent applications required to be disclosed by RFC 3668

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

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4,736,363, US 5,848,055, US 5,881,246, and US 5,995,503
Country: USA

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

U.S. Patent No. 5,848,055

B. Does this disclosure relate to an unpublished pending patent application?:

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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

Where there is a necessary dependence upon these patents in implementations
of MPLS, Nortel Networks hereby agrees to license on fair, reasonable, and
non-discriminatory terms to all parties, any patent claims it owns covering
such technology, solely to the extent such technology is essential to comply
with such standard, but on the condition that any such party grants to
Nortel Networks and its corporate affiliates a reciprocal license under such
party's patents for which there is also a necessary dependence.

Licensing information, comments, notes, or URL for further information

Nortel Networks U.S. Patent No. 5,848,055 entitled "Bandwidth correlation
means for paths in connection-oriented packet switching networks", may
contain claims that are believed may be necessary for practicing the
resulting IETF Standard. In this regard, Nortel Networks will make available
licenses on fair, reasonable, reciprocal, and non-discriminatory terms,
including royalties and/or other payments, to such necessary claims it owns
for the purposes of complying with such resulting IETF Standard.

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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Submitter name
Submitter email

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