TDS Returns - late filing fee

Dear Sir, regarding TDS returns late filing fee U/s.234E, as I remember or heard that prior to F.Y.2014-2015 or some F.Y.(do not remember) we can fight it out as to such levy is not as per the law, I mean we can establish the facts and post 2014-2015 we have to pay it mandatorily. So any info in this regard sir, if so, kindly give some info.