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About me

Dennis R. Lansdowne joined Spangenberg Shibley & Liber in 1985. Five years later, he made partner.


Dennis has represented individuals in catastrophic injury and wrongful death cases; he has also represented large corporations.


"My background and training have allowed me to pursue cases for both people and businesses that have suffered harm. It is an interesting and exciting practice," he says.


Dennis graduated summa cum laude from Cleveland-Marshall College of Law, where he was a member of the Law Review. Cleveland-Marshall will recognize Dennis as Alumnus of the Year in 2013.


After graduating from C-M, he served as law clerk to the Honorable Robert B. Krupansky at both the Northern District of Ohio and the Sixth Circuit Court of Appeals.


"Working in both the trial and appellate courts gave me a unique opportunity to see the litigation process, and I was fortunate to observe many fine lawyers from Ohio and other parts of the country. I knew I wanted to devote myself to that process and practice at the highest level," Dennis says.


After his clerkships, Dennis joined Jones Day as an associate. While there, he concentrated on commercial litigation, representing corporations in insurance, product liability, securities, and contract disputes.


At Spangenberg, Dennis has represented hundreds of people who were seriously injured or lost a loved one due to the negligence of a doctor, nurse, nursing home or other healthcare provider. He is well-known for being able to make complex medicine easy for a jury to understand.


His passion about medical negligence led him to create and teach a course on the subject for several years at Cleveland-Marshall.


Photos and videos

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Practice areas


  1. Medical Malpractice: 40%
  2. Business: 40%
  3. Personal Injury: 20%



Contingent (33-40%)

Payment types:

Cash, Check

Attorney endorsements

7 total 

Are you an attorney? Endorse this lawyer

  • Michael S. Waddington

    I endorse Dennis. He is a highly skilled attorney that is well respected in the legal community.


    Michael Waddington Military law Attorney
    Relationship: Fellow lawyer in community

  • Rhonda Baker Debevec

    I endorse this lawyer.


    Rhonda Debevec Medical malpractice Attorney
    Relationship: Co-worker

Contact info

Spangenberg Shibley & Liber LLP
1001 Lakeside Avenue East, Suite 1700
Cleveland, OH, 44114


PAAdministrative Suspension199504/02/2016
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Personal Injury Litigation-PlaintiffsBest Lawyers in America2017
Personal Injury Litigation-DefendantsBest Lawyers in America2017
Medical Malpractice-PlaintiffsBest Lawyers in America2017
Medical Malpractice LawBest Lawyers in America2013
Personal Injury LitigationBest Lawyers in America2013
Alumnus of the YearCleveland-Marshall Law Alumni Association2013
Super LawyerOhio Super Lawyers2013
Cleveland Personal Injury Litigation Lawyer of the YearBest Lawyers in America2012
Super LawyerOhio Super Lawyers2012
Top 100 Trial LawyersAmerican Trial Lawyers Association2011
Super Lawyer - Top 100Ohio Super Lawyers2011
Best Lawyer in AmericaBest Lawyers2011
Super LawyerOhio Super Lawyers2010
Leading LawyerInside Business Magazine2010
Best Lawyer in AmericaBest Lawyers2010
Top 100 Trial LawyersAmerican Trial Lawyers Association2010
Best Lawyer in AmericaBest Lawyers2009
Super Lawyer - Top 50 ClevelandOhio Super Lawyers2009
Leading LawyerInside Business Magazine2009
Leading LawyerInside Business Magazine2008
Super LawyerOhio Super Lawyers2008
Best Lawyer in AmericaBest Lawyers2008
Best Lawyer in AmericaBest Lawyers2007
Super LawyerOhio Super Lawyers2007
Super LawyerOhio Super Lawyers2006
Work experience
TitleCompany nameDuration
PartnerSpangenberg Shibley & Liber LLP1985 - Present
Association namePosition nameDuration
Cleveland Bar AssociationMemberN/A
Wiliam K. Thomas Inns of CourtMasterN/A
Cleveland-Marshall Law Alumni AssociationPast PresidentN/A
Sixth Circuit Judicial ConferenceLife MemberN/A
EIghth District Judicial ConferenceMemberN/A
International Society of BarristersFellowN/A
American Board of Trial AdvocatesAssociateN/A
Cleveland Marshall College of LawAdjunct Faculty - Medical MalpracticeN/A
Eighth Judicial ConferenceLife MemberN/A
American Bar AssociationMemberN/A
Cuyahoga County Bar AssociationMemberN/A
Cleveland Academy of Trial AttorneysPast PresidentN/A
Beck Center for ArtsBoard of DirectorsN/A
Ohio Association for JusticeMemberN/A
Cleveland Aids ProjectFounderN/A
Committe of the HomelessFormer Co-chairN/A
Practice and Procedure ClinicFormer ChairmanN/A
Juvenile Justice CommitteeVice-ChairmanN/A
Cleveland Academy of Trial AttorneysMemberN/A
Cleveland Metropolitan Bar AssociationMemberN/A
American Board of Trial AdvocatesMemberN/A
American Association for JusticeMemberN/A
Ohio State Bar AssociationMemberN/A
Cleveland Bar AssociationChairman1989 - 1990
Cleveland Bar AssociatonExecutive Council1985 - 1991
School nameMajorDegreeGraduated
Cleveland State University - Cleveland-Marshall College of LawLawJD - Juris Doctor1981
Cleveland State UniversityEnglishBA - Bachelor of Arts1977