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About Me

I represent small businesses and individuals in a variety of transactions and disputes. 

For businesses, my services include (but are not limited to): negotiating, drafting and enforcing contracts of all types;advising on employment matters and defending employment disputes; debt collection; protecting your business from tortious conduct such as interference with contractual relations; and advising and litigating matters involving the Uniform Commercial Code.  

For individuals, I have experience in all forms of real property litigation, including boundary line issues and easements.  I also provide assistance in disputes involving wills and trusts, contracts, and torts such as defamation.

I am more than happy to discuss your legal issues with you, and if I cannot personally help you, I will do my best to guide you to someone who can.  Call today to schedule a free initial consultation with me!    


Practice Areas


  1. Litigation: 40%
    10 years
  2. Commercial: 25%
    10 years
  3. Real Estate: 25%
    10 years
  4. Probate: 10%
    10 years



Hourly ($175-195/hour), Free Consultation (30 minutes), Pro Bono (10%)

Payment Types:

Cash, Check, Credit Card

Attorney Endorsements

3 total 

  • Julie Christine Watts

    I have referred many people to Mr. Diener, and I would unquestionably hire him myself. In addition to being a brilliant and dedicated attorney with high integrity, he is compassionate, fair-minded, and witty. Legal problems are rarely pleasant, but it is always a pleasure to work with JP.


    Julie Watts Family Attorney
    Relationship: Worked together on matter

  • Jonathan Read Peirce

    I endorse this lawyer.


    Jonathan Peirce Litigation Attorney
    Relationship: Fellow lawyer in community

Contact Info

Feltman, Gebhardt, Greer & Zeimantz

421 W. Riverside Ave, Suite 1400
Spokane, WA, 99201-0409


IDAuthorized to practice law201109/13/2015

Professional Misconduct

We have not found any instances of professional misconduct for this lawyer.
Avvo Contributions
Legal Answers
Award NameGrantorDate Granted
Outstanding Alumni AwardWenatchee FFA2007
Dean's ListN/A2005
Dean's ListN/A2004
Dean's ListN/A2003
Langroise ScholarshipN/A2002
UI Scholar AwardN/A1997
Work Experience
TitleCompany NameDuration
AttorneyFeltman, Gebhardt, Greer & Zeimantz2010 - Present
Associate AttorneyDavis Arneil Law Firm, LLP2005 - 2010
Summer InternAlaska Department of Law2004 - 2004
Law ClerkAherin, Rice & Anegon2003 - 2004
Association NamePosition NameDuration
Kappa Sigma FraternityBoard Member2012 - Present
Leadership SpokaneMember2012 - Present
Three Chairs & The TruthMember2011 - Present
Spokane County Bar AssociationMember2010 - Present
Wenatchee Valley Chamber of CommerceBoard Member2010 - 2010
Mission: Improv, LLCMember2008 - 2010
Chelan Douglas Young Lawyers DivisionBoard member2007 - 2009
Wenatchee Performing Arts CenterSupporting Member2007 - 2010
Chelan-Douglas Land TrustSupporting Member2006 - 2010
Chelan-Douglas Bar AssociationMember2005 - 2010
Washington State Bar AssociationMember2005 - Present
Washington Young Lawyers DivisionMember2005 - Present
Wenatchee FFA AlumniMember2005 - 2010
Idaho Law ReviewCasenote & Comment Editor2004 - 2005
American Bar AssociationMember2003 - Present
Kappa Sigma FraternityMember2001 - Present
Elks ClubMember2000 - Present
Legal Cases
Case NameOutcome
In re Estate of MelterVictory for my clients
Network of Construction and Development v. Bessamaire Sales, LLCVictory for my clients
Armand v. Opportunity Management, Co.Victory for my clients
See all Legal Cases 
Publication NameTitleDate
barnesandnoble.comHere and Gone2010
School NameMajorDegreeGraduated
University of Idaho College of LawLawJD - Juris Doctor (Magna Cum Laude)2005
University of IdahoMass CommunicationBS - Bachelor of Science (Cum Laude)2001
University of Brighton, EnglandBritish Culture and LiteratureStudy Abroad1999
Speaking Engagements
Conference NameTitleDate
Entreprenuership Senior ProjectChoosing Your Business Entity: LLC's vs. Corporations2013