If the development, manufacture, use, sale, offer for sale, import or export of the Licensed Product in the Licensed Field and in the Licensed Territory results in a claim for Patent infringement by a Third Party, the Party first having notice of such claim shall promptly notify the other Party in writing of such a claim.  Following such notice, the Parties agree to enter into either a joint defense or common interest agreement, under which agreement the Parties can share the known facts of such infringement in reasonable detail, if they are advised to do so by counsel.