If you submitted to a breathalyzer between June 1, 2011 and August 31, 2017 and were convicted or pled guilty to an OUI charge, that conviction could be overturned. You should contact an attorney who can help you determine if your case should be thrown out. The reason for this is the Draeger 9510 breathalyzer device. It is estimated that there were more than 36,500 breath tests administered using this device that resulted in “scientifically unreliable” results.