Expertise born from experience

Professional

• For over 34 years, Mary Nan Dupont has been practicing law in the area of estate planning and trust and estate administration.

• After a one-year clerkship with Judge John R. Gibson, a federal court of appeals judge, she began her legal career at Spencer Fane Britt & Browne, achieving partnership status.

• Mary Nan opened Dupont Law Firm in 2002 and practiced as a sole practitioner for over 12 years.

• Mary Nan joined the law firm of Sage Law, LLP in 2017.

• She is licensed in both Kansas and Missouri.

• She achieved an A-V rating through the national peer-review ranking system with Martindale-Hubbell, which is the highest ranking given to attorneys.

General Information and Civic Involvement

• Born and raised: Chillicothe, Missouri

• Married to Michael Thiessen and mother of three children

• Undergraduate Education:   University of Missouri – Columbia (B.S.B.A. in Finance and Economics 1985) Magna Cum Laude

• Law degree: University of Missouri – Columbia (J.D. 1988) Cum Laude, Order of the Coif and Law Review

• Kansas City Symphony League Member - Previous Ball Treasurer, League Treasurer, and Parliamentarian

• Lyric Opera Circle Member - Previous Ball Treasurer and Parliamentarian

• Mizzou Letter Winners Board of Directors

Professional Affiliations, Articles and Presentations

• Missouri Bar Member - Admitted in 1988

• Kansas Bar Member - Admitted in 1989

• Children’s Mercy Planned Giving Council Member

• Author of 2013 Chapter 4 "Drafting a Marital Deduction Will and a Marital Deduction Trust," Missouri Bar Estate Planning Trusts and Estates Series.

• Presentations for local estate planning organizations, businesses, and non-profits on the following topics:

  • Procedures for Gathering Client Information

  • Charitable Giving Techniques

  • Private Foundations vs. Community Foundation Funds

  • Planning for Disability

  • Choosing a Fiduciary

  • The Use of Disclaimers in the Spousal Situation

  • Joint Trusts - When to Use and When Not to Use

  • What to do When the Client Dies

  • Everybody Needs a Plan: Dispelling the Myths of Estate Planning

  • Business Succession Planning - Survival of the Family Business

  • Generation Skipping Transfer Tax Issues

  • Medicaid, Medicare, and Social Security Planning Issues

  • Handling Unique Assets in Estate Planning

• Mary Nan taught an Elder Law class at UMKC as an adjunct professor in 2001.