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Quinn Harrison Posner

Quinn Harrison Posner

Practice areas:

Personal Injury, DUI & DWI, Landlord & Tenant

About Me



 As a former Clark County deputy prosecuting attorney and in-house insurance defense attorney for a large international insurance company, litigation is my passion. That is why I have chosen personal injury and criminal defense as my primary practice areas. Having worked these cases from the other side, I know how the insurance companies and prosecution strategize their attacks. Of course, I believe an approrpiate, fair settlement should be the primary goal due to the emotional and financial costs of litigation. However, when the other side does not play fair, and frequently they do not, then my past experience is invaluable and I believe a strong, aggressive offense is necessary to represent my clients against these powerful entities. 


Practice Areas

Licensed since 2001

  1. Personal Injury: 70%
  2. Landlord & Tenant: 15%
  3. DUI & DWI: 15%



Hourly ($250-275/hour), Contingent (33-40%), Fixed (Sometimes)

Payment Types:

Cash, Check, Credit Card

Attorney Endorsements

19 total 

  • No photo

    Quinn sets the standard for hard working attorneys in the Portland area. We were first associated while at law school together at Willamette University. His high level of integrity and professionalism have been on display since that time. If I needed a lawyer, I'd call Quinn Posner.


    David Ward Land Use & Zoning Attorney
    Relationship: Fellow lawyer in community

  • Keith Robert Hall

    Quinn is not only a very smart lawyer; he loves what he does for a living. This is something that anyone who meets him will quickly understand. Quinn is always adding to his legal education, and loves a good legal challenge. He has had many notable successes in negotiations, courtrooms, and on appeals. He is also cordial, respectful, and a good representative of the legal profession as a whole. Quinn has been able to not only be a zealous advocate for his clients, but also to educate other attorneys on legal matters and proper procedures. I endorse this attorney.


    Keith Hall Criminal Defense Attorney
    Relationship: Fellow lawyer in community

Contact Info

Langsdorf, Ferguson & Posner PLLC

2220 H St
Vancouver, WA, 98663



Professional Misconduct

We have not found any instances of professional misconduct for this lawyer.
Avvo Contributions
Legal Answers
Award NameGrantorDate Granted
2007 Young Lawyer's Division Outstanding SectionWashington State Bar Association, Young Lawyers Division2008

Work Experience
TitleCompany NameDuration
PartnerLangsdorf, Ferguson & Posner, PLLC2013 - Present
OwnerPosner Law Office, P.C.2011 - Present
Field CounselLiberty Mutual Insurance Group2009 - 2011
Associate AttorneyThe Mitchell Law Office, LLC2008 - 2009
Associate AttorneyDuggan, Schlotfeldt & Welch, PLLC2006 - 2008
Deputy Prosecuting AttorneyClark County Prosecuting Attorney's Office2001 - 2006

Association NamePosition NameDuration
Washington State Association for JusticeEagle Member2015 - Present
Washington State Association for JusticeMember2014 - Present
Clark County Rental AssociationLegal Advisor2013 - Present
Oregon Trial Lawyers AssociationMember2011 - Present
American Association for JusticeMember2011 - Present
Clark County Bar Association, Young Lawyers SectionPresident2007 - 2007
Clark County Bar Association, Young Lawyers SectionVice President2006 - 2006
Clark County Young Lawyers SectionMember2005 - 2008
American Inns of CourtMember2005 - Present
Oregon State BarMember2005 - Present
Washington State Bar AssociationMember2001 - Present
Clark County Bar AssociationMemberN/A

Legal Cases
Case NameOutcome
CAMPBELL CRANE RIGGING SERVICES INC v. DYNAMIC INTERNATIONAL AK INCAffirmed for our client, Campbell Crane & Rigging Services, Inc.

See all Legal Cases 

School NameMajorDegreeGraduated
Willamette UniversityN/AJD/MBA - Juris Doctorate and MBA2001
University of Washington -SeattleN/ABA - Bachelor of Arts1996