Cisco's Statement about IPR Claimed in draft-leung-mip4-proxy-mode-00.txt
Date: 11 January 2007 
From: Rachel Albright<ralbrigh@cisco.com>

Cisco is the owner of US Patent Nos. 6,466,964, 6,982,967, and 
6,795,857 relating to the subject matter of "Mobility Management 
using Proxy Mobile IPv4" <draft-leung-mip4-proxy-mode-00.txt>.

If technology in this document is included in a standard adopted by 
IETF and any claims of any Cisco patents are necessary for practicing 
the standard, any party will have the right to use any such patent 
claims under reasonable, non-discriminatory terms, with reciprocity, 
to implement and fully comply with the standard.

The reasonable non-discriminatory terms are:

If this standard is adopted, Cisco will not assert any patents owned 
or controlled by Cisco against any party for making, using, selling, 
importing or offering for sale a product that implements the standard, 
provided, however that Cisco retains the right to assert its patents 
(including the right to claim past royalties) against any party that 
asserts a patent it owns or controls (either directly or indirectly) 
against Cisco or any of Cisco's affiliates or successors in title; and 
Cisco retains the right to assert its patents against any product or 
portion thereof that is not necessary for compliance with the standard.

Royalty-bearing licenses will be available to anyone who prefers that option.

For information contact:

Dan Lang
Senior IP Counsel
Cisco Systems
408-526-6672
standards-ipr@cisco.com