Mimi Coffey

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Mimi Coffey is a trial attorney with 17 years’ experience. Founder of The Coffey Firm, she practices in Dallas, Tarrant, and Collin counties. She is board-certified in DWI by the National College of DUI Defense (NCDD) and is a Regent of the NCDD. Author of Texas DWI Defense: The Law and Practice, Mimi has also written three nationally published and four statewide articles. Mimi has twice attended Indiana University’s Borkenstein Course for state toxicologists, on both alcohol and drugs. She has also completed the NHTSA SFST Course, SFST Instructor Course, and the 12-Step DRE Mini-Course Program. She is also one of the first attorneys in the United States to attend the Axion Labs Gas Chromatography Training. Her minor in college was geology, lending her a comprehensive and disciplined scientific mind when it comes to scientific and mathematical issues such as blood and breath testing.

Stories from Mimi Coffey

There Won’t Be Blood
Tuesday, May 1st, 2018

Evidence obtained from the defendant’s blood is often the lynchpin in a Texas criminal case. And since the analysis of blood is such an intensely scientific process, no wonder the State (and often the Defense) employs an expert to testify about it.

Fear and the DWI  Field Sobriety Tests
Thursday, June 6th, 2013

The National Highway Traffic Safety Administration (NHTSA) developed the Standardized Field Sobriety Tests (SFSTs) in a vacuum. None of the original research simulated real-life testing conditions—e.g., a person performing the standardized field sobriety tests with the fear of going to jail.