Dennis practices in the Business Law and Estate Planning practice groups with a focus on transactional law. Since 1980, he has concentrated his practice in the areas of Estate Planning, Taxation, Probate, and Business transactions. Dennis has presented before various public and professional groups on topics related to taxation and estate planning. He has written for the William Mitchell Law Review, and is an adjunct professor of law in estate planning at the Mitchell Hamline School of Law, a position he has held since 1993.
- Living Trusts: Snake Oil or Better than Sliced Bread?, William Mitchell Law Review, 2000
- "Estate Planning for Nontraditional Families" , Minnesota CLE, 2010