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About me

Michael J. O'Brien is a practicing attorney and a founding partner of Cleveland-based The O'Brien Law Firm LLC. Mr. O'Brien's firm emphasizes estate and trust planning and administration, probate, corporate planning, family business, family limited partnership and charitable trust and private family foundation planning. Mr. O'Brien has a particular expertise in planning for families with children with disabilities. Mr. O'Brien has worked with many family businesses with regard to family transfers and succession planning. In addition, Mr. O'Brien is admitted to practice in Florida and has administered many Florida estates with attention to special probate and tax concerns involving property disposition in multiple states. He serves as a Trustee of several charitable foundations that include The Cleveland Sight Center, North Coast Community Homes, The Giles Foundation and The DeWeese Foundation. Mr. O'Brien is a graduate of St. Ignatius High School, Holy Cross College and the Cleveland-Marshall College of Law. Mr. O'Brien is an active member of the American Academy of Estate Planning Attorneys and of the Ohio and Florida Bar Associations. Mr. O'Brien is married to Dawn Kern O'Brien and lives in Shaker Heights with their three children, Darby, Murphy and Miles.


Photos and videos

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Practice areas


  1. Estate Planning: 50%
    33 years
  2. Trusts: 15%
    33 years
  3. Probate: 15%
    33 years
  4. LLC: 10%
    31 years
  5. Corporate: 10%
    33 years


Payment types:

Cash, Check, Credit card

Attorney endorsements

5 total 

Are you an attorney? Endorse this lawyer

  • John Dudley Laughton

    Michael and I are fellow members of the nationally recognized American Academy of Estate Planning Attorneys. In getting to know Michael I have found him to be a hard working professional with compassion for the families he serves. I endorse this attorney.


    John Laughton Estate planning Attorney
    Relationship: Other

  • Ryan Lynn Jensen

    I endorse this lawyer. I know Michael as a colleague in the American Academy of Estate Planning Attorneys. He is well-qualified to help families with all of their estate planning needs.


    Ryan Jensen Estate planning Attorney
    Relationship: Other

Contact info

The O'Brien Law Firm LLC fka Greene and Tulley Co., L.P.A.

38027 Euclid Avenue
Willoughby, OH, 44094

The O'Brien Law Firm LLC fka Maria E. Quinn Co. LPA

Chagrin Richmond Plaza
25550 Chagrin Blvd., Suite 100
Beachwood, OH, 44122



FLMember in Good Standing198606/20/2016
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
AV Preeminent 5.0 out of 5 Peer Review RatedMartindale-Hubbard2015
Top Rated Cleveland AttorneyLegal Leaders2015
Top Rated Cleveland AttorneyLegal Leaders2014
AV Preeminent 5.0 out of 5 Peer Review RatedMartindale-Hubbell2013
Cleveland Top AttorneyLegal Leader2013
AV Preeminent 5.0 out of 5 Peer Review RatedMartindale-Hubbell2012
30 hours Continuing Legal Education metFlorida Bar2012
24 hours Continuing Legal Education metOhio State Bar Association2012
36 hours of Continuing Legal Education metAmerican Academy of Estate Planning Attorneys2012
Sponsorship AwardNorth Coast Community Homes2006
Work experience
TitleCompany nameDuration
Attorney/OwnerThe O'Brien Law Firm LLC2002 - Present
AttorneyPerry & O'Brien, L.L.P.1997 - 2002
AttorneyArter & Hadden LLP1986 - 1997
Association namePosition nameDuration
Cleveland Metropolitan Bar Association, Estate Planning, Probate and Trust Law SectionMember1998 - Present
AAEPAMember1997 - Present
Florida BarMember1986 - Present
Ohio State Bar AssociationMember1983 - Present
The Cleveland Sight CenterTrusteeN/A
North Coast Community HomesTrusteeN/A
The Giles FoundationTrusteeN/A
The DeWeese FoundationTrusteeN/A
Legal cases
Case nameOutcome
Our Clients v. Federal and Ohio Estate TaxMillions of tax and estate administration dollars saved over the years
See all legal cases 
Publication nameTitleDate
The Heart of Lake Country MagazineThe O'Brien Law Firm Making A Difference One Family at a Time2009
Published BookGuiding Those Left Behind In Ohio2007
Crain's Cleveland BusinessTop Ten Estate Planning Mistakes1999
School nameMajorDegreeGraduated
Cleveland State University - Cleveland-Marshall College of LawLawJD - Juris Doctor1983
Holy Cross CollegeN/ABA - Bachelor of Arts1979
Speaking engagements
Conference nameTitleDate
Estate Planning SeminarAsset Protection Planning2012
Estate PlanningBasic Estate Planning2011
Estate Planning SeminarWhy Your Living Trust May Not Work2010
Estate Planning SeminarTop Ten Estate Planning Mistakes2010
Estate Planning SeminarIRA Workshop2008
Estate Planning SeminarSpecial Needs Trusts2007