Hanis Irvine Prothero PLLC
Please Call: 253 520-5000
Mark W. Prothero
Mark W. Prothero graduated from the University of Washington in 1978 with a Bachelor of Arts degree in History. He then attended law school at the University of San Diego, where he earned his J.D. in 1981.
In 1983, Mark began working for the Associated Counsel for the Accused (ACA). He began by defending people in the municipal and district courts accused of such crimes as D.U.I. and Domestic Violence. He moved on to defend juveniles, and in 1987, joined the felony unit. While at ACA, Mark participated in many pro bono projects for accused criminals and was a member of the Innocence Project Northwest. In his professional capacity, Mark is perhaps best known as the lead defense attorney in the landmark case against Gary Ridgway, the Green River Killer.
As a founding member of the Criminal Defense Law Department at Hanis Irvine Prothero PLLC, Mark's extensive courtroom experience qualifies him to defend a range of crimes from D.U.I. to Aggravated First Degree Murder. Admitted to the Federal Bar, Mark is able to defend those accused of federal crimes and is one of the select few attorneys on the Washington Supreme Court's panel to defend individuals faced with the death penalty.
A frequent lecturer at legal education seminars, Mark is recognized for his expertise on subjects such as: sentencing, evidence, forensic DNA, the mental health of criminals, and the death penalty. He is a member of the Washington Defender Association (WDA) and the Washington Association of Criminal Defense Lawyers (WACDL), serving on their Board of Governors since 2003 and authoring three articles for the WACDL publication, DEFENSE.
Mark has also served as a Judge Pro Tem in Tukwila, Des Moines, Kent, and SeaTac Municipal Courts.
In addition to his professional activities, Mark is committed to community involvement. As a volunteer speaker at local high schools on criminal law and law as a career, Mark has served on several Kent School District committees. A renowned swimmer who represented the United States in international competition, Mark is co-founder of the 2003 Kent Citizens for Water Safety Organization, which successfully saved the Kent Meridian swimming pool from county closure.
A long-time swim coach, Mark "retired" from coaching, at least for awhile. During his 11 years as coach at Kentwood High School, he coached several state champions and was named State 4A Coach of the Year in 2003. He also coached for 14 years at Kent Swim and Tennis Club, where his teams won 7 league championships and 86 dual meets in a row.
Mark and his wife Kelly have two children - Sean who is pursuing his bachelor's degree while coaching swimming at KING Aquatic Club and Kennedy High School and Marley, a two-time state high school swim champion who attends the University of Nevada Las Vegas and swims for the Rebels.
Please Call: 253 520-5000