Received: June 25, 2002
From: Atsushi Takeshita <takeshita@docomolabs-usa.com>



DoCoMo USA Labs’ patent statement pertaining to a number of
Internet-Drafts (listed) in claim

    * DoCoMo Communications laboratories USA, Inc. (DoCoMo USA Labs) will 
not assert its US provisional Patent No. 60/358,177 ("Securing MIPv6 
BINDING UPDATES USING ADDRESS BASED KEYS (ABK)"), its US non-provisional 
patent or its non-US counterpart against any party that implements
draft-okazaki-mobileip-abk-00.txt or any derivative, when this is employed 
as a standard.

    * DoCoMo Communications laboratories USA, Inc. (DoCoMo USA Labs) will 
not assert its US provisional Patent No. 60/358,286 ("Securing MIPv6 IPv6 
NEIGHBOR DISCOVERY USING ADDRESS BASED KEYS (ABK)"), its US non-
provisional patent or its non-US counterpart against any party that 
implements draft-kempf-secure-nd-02.txt or any derivative, when this is 
employed as a standard.

    * DoCoMo Communications laboratories USA, Inc. (DoCoMo USA Labs) will 
not assert its US provisional Patent "Link-layer Triggers Protocol" (June 
19, 2002), its US non-provisional patent or its non-US counterpart against 
any party that implements draft-yegin-l2-triggers-00.txt or any 
derivative, when this is employed as a standard.

    * DoCoMo Communications laboratories USA, Inc. (DoCoMo USA Labs) will
not assert its US provisional Patent "Low latency mobile initiated tunneling
handoff" (May 3, 2002), its US non-provisional patent or its non-US counterpart against any party that implements draft-gwon-mobileip-postmithv6-00.txt or any derivative, when this is employed as a standard.

Each grant of rights will terminate with respect to any party that asserts a
patent it owns, directly or indirectly, against DoCoMo USA Labs and affiliates for 
their implementation of and operation in compliance with each Internet Draft or any derivative. This termination will occur as of the date the patent is asserted against DoCoMo USA Labs and affiliates.


With  best regards,

Atsushi Takeshita
Senior Vice President, Executive Director
DoCoMo Communications Laboratories USA, Inc.
181 Metro Drive, Suite 300
San Jose, CA 95110

takeshita@docomolabs-usa.com
Tel: +1-408-451-4705
FAX: +1-408-573-1090