Received: June 25, 2002 From: Atsushi Takeshita 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