Need a Query where with case statement

This Query is not working please help........select * from tbl eINNER JOIN LKUP L ON e.ID=L.LKUP_ID WHERE CASE WHEN ISNULL(DATEPART(YY,(SU_DT)),0)=2014 OR ISNULL(DATEPART(mm,(SU_DT)),0)>=11THEN (LKUP_VAL_EN LIKE('V2%') OR LKUP_VAL_EN LIKE('V3%'))ELSE LKUP_VAL_EN LIKE('V2%') END AND e.Active=1