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About me

I am a family lawyer focusing on all aspects of family law from divorce to custody to guardianships to adoptions to paternity to family building and assisted reproduction technology law.   I enjoy client interaction and working with people daily.   I am a musician and outsdoors enthusiast when not practicing law.  


Languages spoken: French, Spanish

Photos and videos

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Practice areas


  1. Divorce & Separation: 53%
    12 years, 400 cases
  2. Adoption: 30%
    16 years, 100 cases
  3. Family: 7%
    5 years, 25 cases
  4. Guardianship: 5%
    12 years, 40 cases
  5. Juvenile: 5%
    16 years, 70 cases



Retainer (always)

Payment types:

Cash, Check, Credit card

Attorney endorsements

15 total 

Are you an attorney? Endorse this lawyer

  • James Patrick Nelson

    I endorse this lawyer. I have a great amount of respect for Sean. He is extremely knowledgeable, hard working and honest.


    James Nelson Divorce & Separation Attorney
    Relationship: Fellow lawyer in community

  • John Patrick Casey

    One of the most knowledgable Family lawyer in DuPage County!


    John Casey Criminal Defense Attorney
    Relationship: Worked together on matter

Contact info

Sullivan Taylor & Gumina, P.C.

1250 E. Diehl Road
Suite 400
Naperville, IL, 60563


ILActive And Authorized To Practice Law199811/12/2015
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Leading Lawyer (Family Law)Leading Lawyers Network2014
Illinois Super LawyerChicago Magazine2014
Illinois Super Lawyer - Rising StarChicago Magazine2013
Illinois Super Lawyers - Rising StarChicago Magazine2012
Leading Lawyer (Adoption & Reproductive Technology)Leading Lawyers Network2012
Illinois Super Lawyers - Rising StarChicago Magazine2011
Illinois Super Lawyers - Rising StarChicago Magazine2010
Lawyer of the YearDuPage County Bar Association2010
Illinois Super Lawyers - Rising StarChicago Magazine2009
Director's AwardDuPage County Bar Association2008
Work experience
TitleCompany nameDuration
PartnerSullivan Taylor & Gumina, PC2005 - Present
Association namePosition nameDuration
DuPage County Bar Association - Civil Law & Practice CommitteeChair2015 - 2016
DuPage County Bar Association - Immigration Law CommitteeChair2014 - 2015
American Academy of Assisted Reproductive Technology AttorneysFellow2013 - Present
American Academy of Adoption AttorneysFellow2012 - Present
DuPage County Bar Association, Family Law and Practice CommitteeChair2010 - 2011
DuPage County Bar Association Intellectual Property Law & Practice CommitteeChair2009 - 2010
American Inns of CourtMember2007 - 2014
DuPage County Bar Association - Legal AidChair2006 - 2008
DuPage County Bar AssociationMember2005 - Present
Illinois State Bar AssociationChild Law Section Council1998 - 2012
Legal cases
Case nameOutcome
United States v. Thomas, 284 F.3d 746Conviction reversed on grounds of sufficiency of the evidence
See all legal cases 
Publication nameTitleDate
DCBA BriefThe Dance of the Discovery Deposition: Dealing with Dodges2015
DCBA BriefRecognizing Difficult Clients: The Who, The What, The How to Avoid, and The What to Do When You Have One2013
DCBA BriefThe Importance of an Independent Judiciary: An Essay on Judicial Selection in Illinois2012
DCBA BriefShow Me the Money: The New Statewide Comprehensive Financial Disclosure Statement2012
DCBA BriefAre the Notes of Guardian ad Litem Discoverable?2011
DCBA BriefNeither Admit Nor Deny: Proper Responses to Requests to Admit in Domestic Relations Proceedings2011
ISBA Child Law Section CouncilVisitation Enforcement on Non-Custodial Parents2010
DCBA BriefCan God Get a Copyright Exemption: Use of Copyrighted Music at Religious Services2009
DCBA BriefWinning the Race: Drafting Corporate Sponsorship Agreements that Won’t Trip You Up,2008
DCBA BriefEight Women to Watch2008
DCBA BriefAn Interview With Child Advocacy Committee Chair,. Sean McCumber by Susan O'Neill Alvarado. One of the DCBA's most active members2007
School nameMajorDegreeGraduated
University of Illinois, Urbana-ChampaignLawJD - Juris Doctor1998
Illinois State UniversityCriminal Justice SciencesB.A.1995
Speaking engagements
Conference nameTitleDate
Family Law CommitteeSpecial Topics for GALs in Domestic Relations2015
Probate & Adoption GALsDiscovery and Depositions for Guardians ad Litem in Probate & Adoption Matters2014
Adoption 101Adoption 101: Ethical Issues2014
Family Law CommitteeCross-Examination of Custody Evaluators2013
Adoption Law Start to FinishAdoption 101: The Basics2013
Topics in Advanced Family LawAdvanced Family Law: Ethics2012
GAL TrainingDiscovery Issues for Guardians ad Litem2012
Child Advocacy CommitteeGuardians ad Litem in Adoption Proceedings2012
Monthly MeetingVisitation Interference, Parental Kidnapping, and Federal Child Custody Laws2011
Mega MeetingOverview of Civil Unions, Same-Sex Marriage, Domestic Partnerships, and the Illinois Civil Unions Act2011
Mega MeetingCustody and Visitation Issues Parties May Face in Civil Unions2011
GAL Training SeminarEthical & Discovery Issues for Guardians ad Litem (and Child Representatives and Attorneys for Children)2011
Family Law CommitteeEthical Issues for Guardians ad Litem (and Child Representatives and Attorneys for Children)2011
DuPage County Evaluation ProgramPreparations for Examinations of Custody Evaluators2010