Mr. Mullkoff’s distinguished career as one of Michigan's prominent criminal defense attorneys spans over thirty years. He has been repeatedly honored as one of the top criminal defense attorneys in white collar and general crime in Southeastern Michigan, named "Super Lawyer" in the category of criminal defense by his peers and given the highest available AV rating by the national Martindale-Hubbell Law Directory.

In 1989 he argued successfully on behalf of a client before the United States Supreme Court. He has appeared in federal appeal actions before the 6th Circuit over 80 times and argued cases before the Michigan Court of Appeals on over 150 occasions.

Having handled well over a hundred jury trials in state and federal courts, Mullkoff has won acquittals in numerous cases including homicide, assault with intent to murder, mail fraud, racketeering, conspiracy, and computer crimes.

Over the years, Mullkoff has gained extensive experience in white collar defense, handling cases such as health care fraud, money laundering, embezzlement, investment banking fraud, mortgage fraud and intellectual property crimes.

In 2003 and 2004 in the federal district court in Washington, D.C., Mullkoff brought a habeas corpus action which resulted in the repatriation to Saudi Arabia of a Guantanamo detainee.

Mr. Mullkoff was elected president of the Criminal Defense Attorneys of Michigan and served in that capacity from 1998 through 2000. In 2003 Governor Engler appointed him to the Michigan Commission on Law Enforcement Standards and he served in that capacity through 2006.

In 2012 a federal grand jury in Detroit found John Cook not guilty of murder after a three week trial. Douglas Mullkoff represented Cook from the time of his original indictment, which was started by the government as a death penalty case. In 2011 the Department of Justice withdrew their plan to seek the death penalty but pursued the matter seeking a sentence of life without parole for what they claimed was a murder ordered by Cook in the course of a separate drug conspiracy crime "Continuing Criminal Enterprise". The jury, after three days of deliberations acquitted him of both these and six additional gun and drug charges.