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About me

I am an experienced and aggressive DUI defense attorney with Kirk C. Davis, PLLC. After rapidly becoming one of the most highly respected trial lawyers for the Seattle City Attorney's office I went into private practice defending those accused of drunk driving. I spent five years defending DUIs, and I am one of the most thoroughly trained DUI attorneys in Washington.


I am trained to administer the field sobriety tests, the Drug Recognition evaluation and I am trained to administer and calibrate the BAC DataMaster breath test machine. My breath test training was held at the manufacturer of the device in Ohio.


We provide DUI defense in King, Pierce, Snohomish, Skagit and Whatcom County. Please contact me if you are looking for an aggressive and experienced DUI defense.


Photos and videos

29746 1261032556

Practice areas

  1. DUI & DWI: 99%
    17 years, 1 thousand cases
  2. Criminal Defense: 1%
    14 years, 4 thousand cases



Fixed (always), Retainer (always)

Payment types:

Cash, Check, Credit card

Attorney endorsements

19 total 

Are you an attorney? Endorse this lawyer

  • James Egan

    Garth O'Brien is a stellar lawyer. For years he worked with the City Attorney of Seattle, and was as sharp as a tack at identifying how to prosecute DUI's. Now, his years of prosecution aid him in connecting with prosecutors towards his clients' great benefits. Garth has always appreciated the underlying factors that can lead to commission of this common error of judgment, and he is a highly respected member of the DUI defense community. He is highly personable and analytical about any legal situation.


    James Egan DUI & DWI Attorney
    Relationship: Fellow lawyer in community

  • Susan Kathleen Duke

    I endorse this lawyer.


    Susan Duke Family Attorney
    Relationship: Fellow lawyer in community


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Rising Star AttorneyN/A2007
Rising Star AttorneyN/A2006
Seattle’s Top LawyersN/A2005
Rising Star AttorneyN/A2005
Rising Star AttorneyN/A2004
Work experience
TitleCompany nameDuration
SEO DirectorCatalyst Online2011 - Present
Of CounselLaw Office of Kirk C. Davis PLLC2011 - Present
SEO, Social Media & Digital Marketing ConsultantGarth O'Brien - Digital Marketing2003 - Present
Community Program ManagerMicrosoft Corp.2010 - 2011
SEO ManagerMicrosoft - MSN.com2009 - 2011
Of CounselFOX BOWMAN DUARTE, PLLC2007 - 2011
Senior Operations ManagerGMI (Global Market Insite, Inc.)2006 - 2009
AssociateCowan Law Firm2002 - 2005
Assistant City AttorneySeattle City Attorney's Office2000 - 2002
Public DefenderNorthwest Defenders Association1999 - 2000
Association namePosition nameDuration
Northwest Academy for DUI DefenseGraduate2002 - 2002
Washington Association of Criminal Defense LawyersMember2002 - 2005
King County Bar AssociationMember2002 - 2006
National College of DUI DefenseMember2002 - 2005
Washington State Association of Municipal AttorneysMember2000 - 2002
Washington State Bar AssociationMember1999 - Present
Legal cases
Case nameOutcome
City of Kirkland v. My ClientCase Dismissed
See all legal cases 
School nameMajorDegreeGraduated
National Patent Analytical SystemsScience of Evidential Breath Alcohol TestingCertificate of Completion2004
National College for DUI Defense Winter Session, San Diego, CADUI DefenseCertificate of Completion2004
National College for DUI Defense Summer Session, Cambridge, MADUI DefenseCertificate of Completion2002
Robert LaPier/NHTSAStandardized Field Sobriety TestingCertification2002
Mastering Scientific Evidence in DUI CasesDUI DefenseCertificate of Completion2002
Seattle University School of LawLawJD - Juris Doctor1999
Western Washington UniversityPolitical ScienceBA - Bachelor of Arts1996
Speaking engagements
Conference nameTitleDate
xMS SEO SummitActionable External Link Building Tactics2012
Microsoft SEO-Meet-UpActionable External Link Building Tactics2012
Microsoft SEO Meet-UpDigital Asset Optimization2012
Microsoft SEO Meet-UpOptimizing Campaign Landing Environments2012
xMS SEO SummitMaking Content Discoverable2011
TechEd North America 2011Search Engine Optimization Basic and Advanced Tactics2011
Puget Sound American Marketing AssociationHow to Recognize an SEO Disaster2011
Microsoft MVP SummitSearch Engine Optimization Workshop2011
Digital Marketing Learning SeriesWho are my “Raving Fans?” How do I find them and What the Heck should I do with them?2011
Internet MarketingInternet Marketing & SEO for Law Firms2007