--- title: "David W. Maas | KnowJudges" canonical: "https://knowjudges.com/kyj/judge/david-w-maas-judge-waukesha-county-circuit-court-wi" page_type: "judge_profile" updated: "2026-10-07" --- # David W. Maas Waukesha County Circuit Court · Judge ## Profile - Court: Waukesha 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. ## Biography ### Professional career - The elected Circuit Court Judge for Branch 4 of Waukesha County, Wisconsin, sworn in on August 14, 2025, after winning the April 1, 2025 election. - Assistant District Attorney, Fond du Lac County (2023–2025) - Assistant Attorney General, Wisconsin Department of Justice - Assistant District Attorney, Milwaukee County - Judge Maas has stated that his desire to be a judge stems from his extensive prosecutorial experience and a deep commitment to justice and the rule of law ### Education ### Additional information - April 1, 2031 - Elected in the April 1, 2025 Wisconsin General Election and will serve until - First appointed/elected in 2025 and took the oath of office on August 14, 2025, before Presiding Judge Ralph M. Ramirez, in the William G. Callow ceremonial courtroom, attended by friends, family, and members of the bench and bar. - He defeated incumbent Bridget Schoenborn in the April 1, 2025 general election for Branch 4. - (2023–2025): Prosecuted a variety of criminal cases, managed motions, settlements, and trials; oversaw electronic communication warrants and subpoenas; trained prosecutors and law enforcement on legal process and privacy law - (2008–2023): Led the Criminal Litigation Unit, prosecuted statewide cases among them cybercrime and child exploitation, reviewed warrants and wiretap requests, and trained prosecutors and law enforcement - , University of Wisconsin Law School (1998) - , Rice University (1995) - Prosecutorial experience included issuing charges, litigating motions, negotiating settlements, and trying cases - Courtroom: 2‐1300, Waukesha County Courthouse, 515 W. Moreland Blvd, Waukesha, WI 53188 - Judge Maas presides over - J.D. - B.A. in Economics - His appointment followed a long career in Wisconsin’s prosecutorial system, and he is known for his commitment to fairness, due process, and efficient courtroom management - He emphasizes punctuality, preparation, impartiality, respect, and ethics in judicial conduct, and believes a judge should be comfortable managing large caseloads and high-pressure environments - Beyond his judicial role, Maas has been active in legal education, delivering statewide, national, and international presentations on trial techniques, digital evidence, ethics, and privacy law - David W. Maas - , which handles a wide range of criminal and civil cases ## 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/david-w-maas-judge-waukesha-county-circuit-court-wi", "url": "https://knowjudges.com/kyj/judge/david-w-maas-judge-waukesha-county-circuit-court-wi", "name": "David W. Maas | KnowJudges", "description": "David W. 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