definiens: means as of any point in time and for so long as such relationship continues to exist withrespect to any entity ( a ) any corporation or business entity of which more than fifty percent ( 50 % ) or more of thesecurities or other ownership interests representing the equity or voting interest are owned, controlled or held, directlyor indirectly, by WYETH or NEUROGEN ; or ( b ) any corporation or business entity which, directly or indirectly, owns, controls or holds more than fifty percent ( 50 % ) ( or the maximum ownership interest permitted by law ) or more of thesecurities or other ownership interests representing the equity or voting interest of WYETH or NEUROGEN ; or ( c ) anycorporation or business entity of which more than fifty percent ( 50 % ) or more of the securities or other ownershipinterests representing the equity or voting interest are owned, controlled or held, directly or indirectly, by a corporationor business entity described in ( a ) or ( b )