Skip to main content

About me

Ask anyone who knows me and they will tell you that I was born to fight for the underdog. My dad, Stanley, was a lawyer in Laurel, Maryland when it was still a small town and most everyone knew each other. During law school, I clerked for a prominent criminal defense lawyer in suburban Maryland who dedicated his life to defending the accused against the power of the state. Both are now gone, but I strive to honor their values and principles in my criminal defense practice today.


I graduated from the University of Maryland with a degree in Economics and received my law degree from Catholic University, Columbus School of Law in Washington, D.C. After law school, I worked for both a mid-size and small firm in Washington, D.C. defending South American companies accused of unfair trade practices by the United States government. After several years, I moved to Colorado to pursue a private practice focused on representing individuals charged with misdemeanors and felonies in the Colorado mountains area. I practice only criminal defense. 


Languages spoken: English, Portuguese

Photos and videos

660094 1424453612

Practice areas


  1. DUI & DWI: 50%
    25 years, 500 cases
  2. Criminal Defense: 25%
    25 years, 500 cases
  3. Domestic Violence: 25%
    25 years, 500 cases



Hourly ($200-250/hour), Fixed (always), Free consultation (30 minutes)

Payment types:

Cash, Check, Credit card

Attorney endorsements

10 total 

Are you an attorney? Endorse this lawyer

  • William Matthew Breitigam

    I endorse this lawyer. JB is an amazing and intelligent attorney. Her clients always come first and she has exceptional knowledge and expertise in DUI defense. It should come as no surprise that she is considered one of the leaders in DMV and DUI defense.


    William Breitigam Criminal defense Attorney
    Relationship: Fellow lawyer in community

  • James Fredrick Little

    Very quickly after I began practicing criminal defense in the central mountains of Colorado it became evident that J.B. enjoys a well-deserved reputation for representing her clients with expertise and in a vigorous and ethical manner. She is well liked by prosecutors, judges, and all of her colleagues. She is gracious in sharing her knowledge and experience with her fellow defense attorneys, which evidences her absolute commitment to the defense of the accused. I am grateful to count J.B. as a friend and I would recommend her services without hesitation.


    James Little Divorce and separation Attorney
    Relationship: Fellow lawyer in community

Contact info

Law Offices of J.B. Katz, P.C.

P.O. Box 5200 (mailing)
101 N. Main Street, Suite 5 (FedEx, UPS)
Breckenridge, CO, 80424

Po Box 5200
101 N Main St Ste 5
Breckenridge, CO, 80424



We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Gold Pro BonoNorthwest Colorado Legal Services Project2010
Gold Pro BonoNorthwest Colorado Legal Services Project2009
Community Appreciation - Breckenridge Town CouncilTown of Breckenridge2008
Work experience
TitleCompany nameDuration
AttorneyLaw Offices of J.B. Katz, P.C.1998 - Present
PartnerDaniel & Katz, P.C.1994 - 1998
AssociateLaw Offices of Royal Daniel III1991 - 1994
AssociateBishop, Cook, Purcell & Reynolds1989 - 1991
Law ClerkAlan J. Goldstein, P.C.1988 - 1988
Association namePosition nameDuration
National DUI Defense CollegeN/A2009 - Present
National Organization for the Reform of Marijuana Laws (NORML)National Legal Committee2000 - Present
Colorado Criminal Defense BarN/A1998 - Present
National Association of Criminal Defense LawyersN/A1995 - Present
Legal cases
Case nameOutcome
People v. R.Not guilty
See all legal cases 
Publication nameTitleDate
Catholic University Law Reviewhe Trust Doctrine: A Source of Protection for Native American Sacred Sites, 38 CATH. UL REV. 705 (1989)1989
School nameMajorDegreeGraduated
National Criminal Defense CollegeN/AN/A2007
Catholic University of America, Columbus School of LawLawJ.B.1990
University of MarylandEconomicsBA - Bachelor of Arts1987
Speaking engagements
Conference nameTitleDate
2016 DUI SeminarPlea Negotiations and Sentencing2016
Annual DUI ConferenceWelcoming Remarks2013