right to use the trademark shall also terminate. SCIEN shall use "Interferon alfa-n3 (human leukocyte derived)" at all times for the sole purpose of marketing of Product for no other purpose. H. The terms of the intellectual property license hereby granted shall be effective upon the Effective Date of this Agreement and during the term of this Agreement, unless sooner terminated in accordance with the provisions of the Sales, Marketing, Distribution and Supply Agreement between the parties. 1. Good Will. SCIEN recognizes that there exists great value and good will associated with the Intellectual Property of Interferon alfa-n3 (human leukocyte derived)" 2. SCIEN agrees that it will not during the term of this Agreement, or thereafter, attack the title or any rights of HEMISPHERX in and to Interferon alfa-n3 (human leukocyte derived) or attack the validity of the license granted herein by HEMISPHERX and solely owned by HEMISPHERX. I. SCIEN agrees to assist HEMISPHERX to the extent necessary in the procurement of any protection or to protect any of HEMISPHERX's right to Interferon alfa-n3 (human leukocyte derived) and HEMISPHERX, if it so desires, may commence or prosecute any claims or suits in its own name or in the name of SCIEN or join SCIEN as a party thereto. SCIEN shall notify HEMISPHERX in writing of any infringements or imitations by others of "Interferon alfa-n3 (human leukocyte derived) which may come to SCIEN 's attention, and HEMISPHERX shall have the sole right to determine whether or not any action shall be taken on account of any such infringements or imitations. SCIEN shall not institute any suit or take any action on account of any such infringements or imitation without first obtaining the written consent of the HEMISPHERX so to do. J. SCIEN agrees to cooperate fully and in good faith with