definiens: means ( a ) any Program Technology that is ( i ) join tly Made by employees of, or consultants to, ELAN and employees of, or consultants to, ARCHEMIX in the performance of the Research Program, or ( ii ) Made solely byemployees of, or consultants to, either Party with the use in a material respect of any Technology, Pa tent Rights or ProprietaryMaterials Controlled by the other Party or any othe r Joint Technology ; ( b ) any Program Aptamer ; ( c ) an y Patented Aptamer;and ( d ) any Program Technology that relates to Pegy lation . For purposes of clarity, ( i ) any Program Te chnology that relates tothe conduct of the SELEX ™ Process or the use of the SELEX ™ Technology shall not be considered to be Jo int Technology, and ( ii ) Joint Technology shall not include any IL- 23 Aptamers Made by ARCHEMIX as of the Effective Da te, and anyProduct Derived from any such IL-23 Aptamers withou t the use in a material respect of any Technology, Patent Rights orProprietary Materials Controlled by ELAN