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About me

I graduated from the U.S. Air Force Academy, was promoted to the rank of Captain, attended Loyola and Notre Dame Law Schools, graduated in the top 5% of my class, was a Deputy District Attorney for Santa Clara County, and have practiced for over 38 years.  My mission is to make a difference each and every day--where the law meets the people.


Photos and videos

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Practice areas


  1. Criminal Defense: 75%
    2 years
  2. DUI & DWI: 25%
    2 years



Hourly ($250-400/hour), Fixed (sometimes), Free consultation (30 minutes)

Payment types:

Cash, Check, Credit card

Attorney endorsements

5 total 

Are you an attorney? Endorse this lawyer

  • Richard Alan Wingerden

    I endorse this lawyer. I have had the opportunity to witness his work in the courtroom and have found him to be diligent and hardworking. He is well respected in the legal community.


    Richard Wingerden Criminal Defense Attorney
    Relationship: Fellow lawyer in community

  • Douglas Richard Lipton

    I am honored to endorse this very experienced lawyer. Jim is well-respected in all local courts and is a tireless advocate to his clients. He knows the law and knows how to win!


    Douglas Lipton Domestic Violence Attorney
    Relationship: Fellow lawyer in community

Contact info

The Law Offices Of J.W. Kellenberger

1871 The Alameda, Suite 150
San Jose, CA, 95126


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Preeminent AttorneyMartindale-Hubbell2010
Preeminent AttorneyMartindale-Hubbell2009
Preeminent AttorneyMartindale-Hubbell2008
Preeminent AttorneyMartindale-Hubbell2007
Preeminent AttorneyMartindale-Hubbell2006
Preeminent AttorneyMartindale-Hubbell2005
Excellence in Legal ResearchBancroft Whitney1971
Work experience
TitleCompany nameDuration
President and OwnerLaw Offices of J.W. Kellenberger1980 - Present
Associate AttorneyDawson, Maino, Chapman, Bishop & Kellenberger1976 - 1979
Deputy District AttorneySanta Clara County District Attorney1973 - 1976
CaptainUnited States Air Force1967 - 1971
Association namePosition nameDuration
Board of Directors, Senior CoastsidersMember2009 - Present
Santa Clara County Defense Attorney NetworkAttorney Member2009 - Present
Half Moon Bay Planning CommissionChairman2004 - 2008
National Legal Aid and Defender AssociationAttorney Member2002 - Present
Santa Clara County Bar AssociationFee Dispute Arbitrator2001 - Present
California Defense Attorney NetworkAttorney Member2000 - Present
The Foundry Continuation High SchoolVolunteer Attorney1999 - 1999
California Public Defenders AssociationAttorney Member1999 - Present
California Attorneys for Criminal JusticeAttorney Member1994 - Present
Superior Court, Santa Clara CountyJudge Pro Tempore1978 - 1981
Santa Clara County Bar AssociationMember1973 - Present
Legal cases
Case nameOutcome
People v. DoeCharge reduced to manslaughter; juvenile sentenced to continuation high school for 18 months
People v. Frank M.Charges dismissed
Shawn S. v Natalie W.Recovery of $805,000.00
See all legal cases 
School nameMajorDegreeGraduated
Loyola Law School, Loyola Marymount UniversityLawJD - Juris Doctor1972
United States Air Force AcademyEngineering ManagementBS - Bachelor of Science1967
Notre Dame Law SchoolN/ASummer Law Program, Middlesex, EnglandN/A