Received: December 11, 2002 From: harri.honkasalo@nokia.com This is to advise the IETF that Nokia believes the Nokia patent application "UMTS authentication as the authentication mechanism in the IP multimedia subsystem", US 09/630425, PCT/US01/23764 may be relevant to RFC3310 "Hypertext Transfer Protocol (HTTP) Digest Authentication Using Authentication and Key Agreement (AKA)". Please refer to http://www.ietf.org/ietf/IPR/NOKIA for more details. Regards, Harri Honkasalo Director of IPR, Standard Technology Nokia Corporation Espoo, Finland