Serving South King County and the Surrounding Areas.

Patrick M. Hanis

Photo of attorney Patrick M. Hanis

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Practice Areas

  • Probate and Trust Administration
  • Estate Planning
  • Wills/Trusts
  • Power of Attorney
  • Health Directives
  • Guardianships
  • Real Estate
  • Boundary Disputes
  • Eminent Domain/Condemnation
  • Business transactions
  • Litigation
  • Water and Sewer Districts
  • Construction Law


Patrick’s practice focuses on matters related to Probate/Estate Planning, Real Estate, Business, Construction, and related transactions and litigation.  Patrick has significant negotiation, trial, mediation and arbitration experience, including jury and non-jury trials.  Patrick is practical in his approach and works diligently to obtain positive outcomes for his clients. Patrick provides his clients with confidence that they are being well represented and helps them understand the various options they have so that the best decisions can be made.    

During law school, Patrick clerked for the Washington State Attorney General’s Office. After graduating from law school, Patrick was an Associate Attorney with the former law firm of Hanis & Olson. In 2003, he became the first associate to join what has become Hanis Irvine Prothero, PLLC, where he is now a Partner.

Patrick has served as a Commissioner for King County Water District #111 since February 2004, which serves the areas of Meridian Valley and Lake Meridian in Kent, where he lives with his wife Sarah and their five children.

Patrick enjoys devoting his free time to a variety of charitable and community causes, including the Boy Scouts of America, and Kiwanis Children's Cancer Program. Among other organizations, he served as former President of the South King County Bar Association and past President of the Meridian-Kent Kiwanis club.


  • Gonzaga University School of Law, Spokane, Washington
    • J.D. - 2001
  • University of Washington
    • B.A., Speech Communications - 1998
  • Kentwood High School

Bar Admissions

  • Washington, 2001
  • U.S. Federal Courts, 2002

Professional Associations

  • Gonzaga Law School, Board of Advisors

Current Employment Position

  • Partner