Stephen Guilliat

Adjunct Faculty

Professional activities and areas of interest

Mr. Guilliat is the Chief Assistant Prosecutor for St. Clair County appointed to that position back in 2011. As chief assistant, he assists the elected Prosecutor in developing goals and objectives for the office, dealing with personnel issues as well as formulating plea policies. He also works with law enforcement agencies on various legal issues and problems. Prior to becoming chief assistant, he served the office as a senior assistant prosecutor where he handled a number vertical high profile cases, headed the major crime unit and the drug task force. Prior to joining the public sector, he was a partner in the law firm of Lord & Guilliat, which represented various municipalities in areas of general civil to both prosecution and defense. He also served as a mediator for all types of civil cases in the St. Clair County Circuit Court.

Mr. Guilliat serves as an instructor for the Prosecutor’s Association of Michigan where he teaches assistant prosecutors throughout the state on various aspects of prosecution. He developed and teaches the OWI Vehicle Forfeiture training program, and is both a lecturer and walking faculty member of the Visual Trial School, which shows prosecutors how to use technology in the courtroom. He has also participated in prosecutor boot camp designed for new assistant prosecutors; staff development where he presented on the topic of competency and criminal responsibility; and has been a regular instructor for the Michigan State Police arson investigation school.

Mr. Guilliat teaches undergraduate criminal law and criminal procedure. He also instructs legal issues in criminal justice at the graduate level.


Publication: “Michigan’s Durable Power of Attorney for Health Care: Will it Live or Die?” Detroit College of Law – Review, Volume 1992 – Fall


Juris Doctor, Magna Cum Laude, 1992, Michigan State University College of Law FKA Detroit College of Law
Bachelor of Science in Criminal Justice, Cum Laude, 1988, Wayne State University


Criminal Justice, Criminal Justice Administration, School of Criminal Justice