Joshua Patrick Grube

Joshua Patrick Grube is a trial lawyer with Dillon Grube, LLC who focuses on criminal defense and labor law issues. As a former state prosecutor and private defense attorney, he has tried more than 100 cases before judges or juries. His criminal work has included matters ranging from disorderly conduct and drunk driving to felony drug delivery and child sexual assault allegations, giving him extensive courtroom perspective.

Grube earned a B.A. from the University of Minnesota in 1999 and a J.D. from Marquette University Law School in 2003. His legal career has centered on courtroom work, prosecution, defense strategy, and professional training. The combination of formal legal education and years of trial practice supports his ability to assess evidence, anticipate prosecution approaches, and prepare cases for negotiation or trial.

Grube spent 16 years as a state prosecutor and has worked closely with judges, prosecutors, and law enforcement officials. He taught police officers legal updates and best practices and received specialized training related to how children disclose and respond to abuse. His experience with sensitive investigations and serious criminal allegations informs a defense approach built on preparation, context, and careful analysis of the State’s case.

Joshua Patrick Grube is admitted in Wisconsin and in the US District Courts for the Eastern and Western Districts of Wisconsin. His professional background includes bar memberships, teaching, and community board service. He brings prosecution insight, defense experience, and substantial trial exposure to clients facing criminal charges, with an emphasis on understanding each person’s circumstances and preparing every case for meaningful advocacy.

Law Office Affiliations

• Attorney, Dillon Grube Law, LLC.
• Member, State Bar of Wisconsin
• Admitted, Eastern District United States District Court
• Admitted, Western District United States District Court
• Member, Rock County Bar Association
• Member, Walworth County Bar Association
• Founding Advisory Council Member, Walworth County Boys and Girls Club
• Former Vice President, St. John Vianney Catholic School board
• Former Board president and Current Board Member, Janesville Performing Arts Center
• Master Mason, Western Star Lodge #55 – Free and Accepted Masons

Licensed State

• Wisconsin

Education

• Marquette University Law School
  Juris Doctor (JD)
• University of Minnesota
  Bachelor of Arts (BA)

Awards & Badges