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About me

I have been practicing law for 26 years.  During that time I have helped over 2,000 families prepare their estate plans. 


In my law firm we focus on estate planning and estate administration.  I have participated in over 400 public seminars in eastern Iowa and western Illinois to educate the public on estate planning issues.  I am licensed in both Iowa and Illinois. 


My law firm, Duffy Law Office emphasizes assisting our clients with preserving their wealth.   Please visit our web site at or my professional profile at


Photos and videos

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Practice areas


  1. Estate Planning: 33%
    27 years, 1.5 thousand cases
  2. Trusts: 33%
    27 years, 400 cases
  3. Probate: 20%
    27 years, 200 cases
  4. Wills: 10%
    27 years, 1.4 thousand cases
  5. Other: 4%
  6. More 



Fixed (always), Free consultation (60 minutes)

Payment types:

Cash, Check, Credit card

Attorney endorsements

40 total 

Are you an attorney? Endorse this lawyer

  • Brandie L. Luis

    I endorse this lawyer. He is a colleague in the American Academy of Estate Planning Attorneys. Over the years I have learned quite a bit from Dennis. I would be comfortable referring my clients to him for thoughtful and thorough planning.


    Brandie Luis Trusts Attorney
    Relationship: Fellow lawyer in community

  • Gary Brainin

    I endorse this lawyer. I have known Dennis for several years, as we are both members of the American Academy of Estate Planning Attorneys. In all that time, Dennis has always impressed me with his knowledge, compassion, and client-focused attitude. I would very confidently refer clients to him.


    Gary Brainin Estate planning Attorney
    Relationship: Fellow lawyer in community

Contact info


ILActive And Authorized To Practice Law199005/17/2016
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
American Jurisprudence Award for Excellence in Real Estate LawUniversity of Iowa Law School1989
American Jurisprudence Award for Excellence in Adminstrative LawUniversity of Iowa Law School1989
Work experience
TitleCompany nameDuration
FounderDuffy Law Office1995 - Present
PartnerAnderson & Nelson1990 - 1995
AttorneyBozeman, Neighbour, Patton & Noe1989 - 1990
Vice PresidentPer Mar Security & Research Corp1970 - 1986
Association namePosition nameDuration
American Academy of Estate Planning AttorneysFellow2004 - Present
Quad City Estate Planning CouncilMember1997 - Present
American Academy of Estate Planning AttorneysMember1995 - Present
Scott County Bar AssociationMember1990 - Present
Rock Island County Bar AssociationMember1990 - Present
Illinois State Bar AssociationMember1990 - Present
American Bar Association, Real Property, Trust and Estate Law SectionMember1989 - Present
American Bar AssociationMember1989 - Present
Iowa State Bar AssociationMember1989 - Present
American Academy of Estate Planning AttorneysBoard of Governors2001 - 2004
Legal cases
Case nameOutcome
Estate PlanningSubstantial tax and administrative cost savings
Estate PlanningSubstantial probate expense saved
See all legal cases 
Publication nameTitleDate
American Academy of Estate Planning AttorneysLegacy Planning: A Guide to Preserving Your Wealth2011
Estate Planning BasicsA Crash Course in Safeguarding Your Legacy2008
School nameMajorDegreeGraduated
University of Iowa College of LawLawJD/MBA - Juris Doctorate and MBA1989
University of IowaBusiness AdministrationMasters in Business Administration1989
University of IowaFinance and Computer ScienceOther - Bachelors1978
Speaking engagements
Conference nameTitleDate
Fall SummitProviding Financial Risk Assessment Services in Estate Planning2013
John Deere employees and pre-retireesMyths of Estate Planning2010