This agreement shall be binding on my executors, administrators, heirs, legal representatives or assigns, and may not be modified except in writing with the approval of an officer of Progenics.  If any provision of this agreement is determined to be illegal or unenforceable, because of the duration thereof or the area or scope covered, I hereby request any court making such determination to reduce the duration, area and/or scope so that in its reduced form such covenant shall be enforceable and I agree that in such event all remaining provisions shall remain in full force and effect.