--- title: "Mark T. Slate | KnowJudges" canonical: "https://knowjudges.com/kyj/judge/mark-t-slate-judge-green-lake-county-circuit-court-wi" page_type: "judge_profile" updated: "2026-08-22" --- # Mark T. Slate Green Lake County Circuit Court · Judge ## Profile - Court: Green Lake County Circuit Court - State: Wisconsin - Role: Judge - Service status: active - Last verified: 2026-08-22 ## Summary Official statewide and applicable court procedural guidance applies to this judge. ## Before you appear - Read the judge-specific standing order first when one is listed. - Check the docket and case orders for requirements that supersede broader guidance. - Confirm current remote-access and courtroom technology arrangements before the proceeding. ## Courtroom Rules ### camera notice Scope: statewide Wisconsin SCR 61 asks media to give the trial judge advance notice before bringing cameras or recording equipment into the courtroom. Evidence excerpt: the trial judge shall be given notice, at least 3 days in advance [Wisconsin SCR Chapter 61: Electronic Media and Still Photography Coverage of Judicial Proceedings](https://www.wicourts.gov/sc/scrule/DisplayDocument.html?content=html&seqNo=1099) Source checked: 2026-07-26 ### courtroom equipment control Scope: statewide Wisconsin SCR 61 leaves courtroom equipment placement, lighting, and use subject to trial-judge control. Evidence excerpt: Only equipment approved by the trial judge in advance of the court proceeding may be used [Wisconsin SCR Chapter 61: Electronic Media and Still Photography Coverage of Judicial Proceedings](https://www.wicourts.gov/sc/scrule/DisplayDocument.html?content=html&seqNo=1099) Source checked: 2026-07-26 ### remote hearing notice Scope: statewide Wisconsin's court system instructs parties that courts will notify them when a hearing is remote and provide joining instructions. Evidence excerpt: The court will send you instructions on how to join your remote hearing by video or by phone. [Wisconsin Court System: Zoom hearing resources](https://www.wicourts.gov/courts/zoom.htm) Source checked: 2026-07-26 ### remote hearing technology Scope: statewide Wisconsin remote-hearing guidance tells participants to contact the clerk promptly if they lack reliable internet or phone access. Evidence excerpt: Contact the clerk of circuit court as soon as possible. [Wisconsin Court System: Zoom hearing resources](https://www.wicourts.gov/courts/zoom.htm) Source checked: 2026-07-26 ## Sources - [Official profile](https://www.wicourts.gov/courts/circuit/judges.htm) - [Official roster](https://www.wicourts.gov/courts/circuit/judges.htm) - [Wisconsin Court System official judicial roster](https://www.wicourts.gov/courts/circuit/judges.htm) - [Wisconsin SCR Chapter 61: Electronic Media and Still Photography Coverage of Judicial Proceedings](https://www.wicourts.gov/sc/scrule/DisplayDocument.html?content=html&seqNo=1099) - [Wisconsin Court System: Zoom hearing resources](https://www.wicourts.gov/courts/zoom.htm) ## JSON-LD ```json { "@context": "https://schema.org", "@graph": [ { "@type": "WebPage", "@id": "https://knowjudges.com/kyj/judge/mark-t-slate-judge-green-lake-county-circuit-court-wi", "url": "https://knowjudges.com/kyj/judge/mark-t-slate-judge-green-lake-county-circuit-court-wi", "name": "Mark T. Slate | KnowJudges", "description": "Mark T. 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Slate combines a background in law enforcement, private legal practice, and prosecutorial work with over a decade of judicial experience - After law school, he practiced law in Markesan alongside his father, Bill Slate, and also served as a prosecutor for the Winnebago County and Columbia County District Attorney’s Offices. ### Education - Bachelor’s degree in political science from the University of Wisconsin-Oshkosh and later obtained a J.D. from the University of Wisconsin Law School. ### Additional information - Since then, he has presided over numerous civil and criminal cases in the county, including recent civil filings in 2023. - Slate ran for the Green Lake County Circuit Court in 2011, winning the primary with 34% of the vote and defeating Jon R. Wilsnack in the general election with 53%. - The Green Lake County Circuit Court is a trial court of general jurisdiction - handling both civil and criminal matters, reviewing state agency decisions, and hearing appeals from municipal courts. - Jury trials are conducted exclusively in circuit courts. - His career reflects a strong connection to Green Lake County and a commitment to public service, both on and off the bench. - Judge Slate has been active in the Green Lake County Bar Association, the Republican Party of Green Lake County, the Markesan Chamber of Commerce, and other local organizations. - Before entering law, he held the role of a police officer in the City of Janesville, gaining practical experience in law enforcement. - His judicial responsibilities include overseeing trials, ruling on motions, and ensuring fair application of Wisconsin law. - Born and raised in Markesan, Wisconsin, he graduated from Markesan High School and remains engaged in his community. - He and his wife, Anja, attend Grace Lutheran Church and have three children and a golden retriever named Justice. - Outside the courtroom, Slate enjoys board games, fishing, snowmobiling, hunting, and reading. ## Published courtroom rules ### Shared court rules - [Wisconsin SCR Chapter 61: Electronic Media and Still Photography Coverage of Judicial Proceedings](https://knowjudges.com/courtroom-rules/national-shared-set-36fa3f826227447b1512eede) — Scope is limited to the court class in the source claim. Shared court context only; case-type restrictions, exceptions, later amendments and case orders apply. This is not a personal preference or a complete rules inventory. [Official source](https://www.wicourts.gov/sc/scrule/DisplayDocument.html?content=html&seqNo=1099). Collected 2026-07-26.