IPR Details
Nortel Network's patent statement pertaining to MPLS

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

Submitted: November 8, 2000

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 #528, "Nortel Networks Statement on patents pertaining to MPLS about IPR claimed in RFC 3209".

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

Holder legal name
Nortel Networks

'II'. Patent Holder's Contact for License Application

Holder contact name
Gib Ritenour
Holder contact email
Holder contact info

Technical Standards & Patent Strategy

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

Designations for Other Contributions

'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)

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

B. Does this disclosure relate to an unpublished pending patent application?:

Has patent pending

'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

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.

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

Submitter name
Submitter email

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