About Us Karpstein & Verhulst is a local Washington County Law Firm that is located in the heart of Downtown Hillsboro. Whether your case is in Criminal Law, Family Court, Personal Injury, Juvenile law, or in Estate Planning or Probate; we are here to help! Attorneys that are in the Firm are: Greg Karpstein, Lindsey Widamer, Heidi Thompson, Jacob Griffith, Shelby Stanton and Frederick Carman. Give us a call today. We would love to hear about your circumstances and how we can work with you to get things right.