Nortel Networks Statement about IPR in draft-ietf-behave-nat-behavior-discovery Date: 14 January 2008 From: Michelle Lee Dear Sir, Nortel Networks Limited has an issued US patent no. 6,993,595, entitled "Address Translation Change Identification", that may be relevant to at least a portion of this proposed IETF RFC 3489 standard if approved and implemented: Title: NAT Behavior Discovery Using STUN draft-ietf-behave-nat-behavior-discovery-02 Tag: < draft-ietf-behave-nat-behavior-discovery-02> www.ietf.org/internet-drafts/draft-ietf-behave-nat-behavior-discovery-02 .txt As understood, this IETF NAT Behaviour Using STUN draft is an Experimental status and not an IETF standards-track document. My contact information is set out below. Kind Regards, Michelle Lee IP Counsel Nortel Networks Limited 5-195 The West Mall Toronto, Ontario Canada M9C 5K1 Fax: 905-863-1986 mleelaw@nortel.com