About Dennis D. Duffy

Dennis Duffy is the founding attorney of the Quad City law firm, Duffy Law Office, PLLC. Dennis combines an extensive background in business with a wide range of legal experience to provide his clients with a uniquely practical perspective. An attorney since 1989, he now devotes his practice primarily to estate planning and asset protection. Mr. Duffy also offers frequent educational seminars on a variety of estate planning topics to both the general public and private groups in the Quad Cities area.

Professional Experience

Mr. Duffy has been practicing law since 1989, when he joined the general practice firm of Bozeman, Neighbour, Patton & Noe in Moline Illinois. In 1990, with five other attorneys, Mr. Duffy founded the law firm of Anderson & Nelson, with offices in Rock Island, Illinois and Davenport Iowa. He became the Managing Partner, and the firm grew to 12 lawyers practicing in almost every area of business litigation. Mr. Duffys practice focused on the representation of small and medium businesses and individuals in the areas of real estate, estate planning and business and tax planning. He founded Duffy Law Office, PLLC in 1995.

Before returning to school for his advanced law and business degrees, Mr. Duffy worked for nearly a decade at Per Mar Security & Research Corp. in Davenport, as Vice President.

Mr. Duffy is a member of the American and state bar associations of both Iowa and Illinois as well as the Scott and Rock Island County Bar Associations.

He is an executive member of the American Academy of Estate Planning Attorneys and former Academy Fellow. The fellow program recognizes Academy members who demonstrate advanced expertise and significant practical experience in the estate planning, trust, tax planning, guardianship, probate and estate administration fields.

He is co-author of the books Estate Planning Basics A Crash Course in Safeguarding Your Legacy and Legacy Planning: A guide to Preserving your Family Wealth.


Mr. Duffy earned his bachelors and masters degrees in Business Administration and his Juris Doctor degree, with distinction, from the University of Iowa. While in law school, he served as Case Editor for the Moot Court Executive Board and received the prestigious American Jurisprudence Award for excellence in real estate transfer and finance law.


A native of Davenport, Mr. Duffy is married and the father of three daughters. He lives with his family in Bettendorf, Iowa.

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