Received March 21, 2002 From: Jonathan Rosenberg This is to inform you that I am aware of potential IPR on the following: draft-ietf-sip-update-01 draft-ietf-sip-manyfolks-resource-05 These are a direct consequence of the fact that both drafts are derived from draft-rosenberg-sip-unify-00, for which I had already disclosed IPR. These are, of course, covered by our statement of terms: "dynamicsoft may seek patent protection on technology described in documents which dynamicsoft submits for use in IETF standards discussions. In relation to any IETF standard incorporating any such technology, dynamicsoft will grant a royalty free non-exclusive license to Qualified Parties to utilize such technology if necessary for practice of IETF standards implemented as a result of dynamicsoft's submission. As used herein, Qualified Parties means a party who has not, does not and will not assert, in litigation or otherwise, including in licensing discussions, any patent or other intellectual property right against dynamicsoft. Any such license to a Qualified Party shall terminate at once if such party asserts a patent or other intellectual property right against dynamicsoft. dynamicsoft will grant non-exclusive licenses to Non-Qualified Parties on reasonable, reciprocal non-discriminatory terms and conditions."