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About Me

Marc S. Kohnen is a San Diego Criminal Defense Lawyer and San Diego DUI Lawyer, who has spent the past 5 years working his way up from law clerk to licensed attorney in the San Diego Criminal Defense Legal Community. The range of Mr. Kohnen's legal experience extends from murder cases that have achieved National media attention, appearing on Dateline and MSNBC Crossfire, to petty misdemeanors in and around San Diego. Mr. Kohnen's many satisfied clients and case results speak volumes to his quality as an attorney.


Languages Spoken: Spanish, Danish

Photos and Videos

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Practice Areas


  1. Criminal Defense: 50%
    11 years, 200 cases
  2. DUI & DWI: 25%
    11 years, 50 cases
  3. Violent Crime: 15%
  4. White Collar Crime: 10%



Fixed (Always)

Payment Types:

Cash, Check, Credit Card

Attorney Endorsements

11 total 

  • Douglas MacMillan Borthwick

    I endorse this lawyer.


    Douglas Borthwick Family Attorney
    Relationship: Fellow lawyer in community

  • Michael S. Waddington

    I endorse Marc. He is a highly skilled attorney that is well respected in the legal community.


    Michael Waddington Military Law Attorney
    Relationship: Fellow lawyer in community

Contact Info

The Law Office of Marc S. Kohnen

1350 Columbia St.
Suite 700
San Diego, CA, 92101



Professional Misconduct

We have not found any instances of professional misconduct for this lawyer.
Avvo Contributions
Legal Answers
Award NameGrantorDate Granted
Top 100 Trial LawyersNational Trial Lawyers Association2014
Top 10 Attorneys Under the age of 40National Academy of Criminal Defense Attorneys, Inc.2014
Top Attorney Semi FinalistSan Diego Daily Transcript2013
Work Experience
TitleCompany NameDuration
PresidentThe Law Office of Marc S. Kohnen2008 - Present
AssociateLaw Offices Of Kerry L. Armstrong, Aplc2008 - 2008
Attorney/Law ClerkSteigerwalt and Associates2004 - 2008
Assistant Football CoachCalifornia University of Pennsylvania2001 - 2003
Association NamePosition NameDuration
Criminal Defense Bar Association of San DiegoN/A2008 - Present
California Attorneys for Criminal JusticeN/A2008 - Present
San Diego County Bar AssociationN/A2008 - Present
California Public Defenders AssociationN/A2008 - Present
Legal Cases
Case NameOutcome
People v. Valerie CarlsonProbation
People v. Jennifer TrayersNot Guilty - First Degree Murder
People v. Peter RobbinsProbation
See all Legal Cases 
Publication NameTitleDate
Digital JournalAttorney Marc S. Kohnen a Semi-Finalist for the San Diego Daily Transcript’s “Top Attorneys” List2013
Chicago TribuneCharlie Brown Voice Actor Pleads Not Guilty to Stalking2012
KPBS.orgMan Who Did Voice of 'Charlie Brown' Pleads Not Guilty to Stalking2012
National PostCharlie Brown voice actor Peter Robbins pleads not guilty to stalking charges2012
Twin Cities Pioneer PressVoice of Charlie Brown charged with stalking, threatening ex-girlfriend2012
The Globe and MailGood grief! Actor who was voice of Charlie Brown arrested for threats, stalking2012
ABC NewsCharlie Brown Voice Actor Arrested2012
Fox 5 News San DiegoVoice of Charlie Brown’ faces felony charges2012
Southern California Public RadioOriginal voice of Charlie Brown arrested for threatening ex-girlfriend and her breast surgeon2012
Daily Mail - UKNuts, it's Charlie Brown in chains!2012
Washington TimesVoice actor for Charlie Brown arrested in Calif.2012
The Huffington PostPeter Robbins, Charlie Brown Voice Actor, Arrested for Alleged Stalking2012
Associated PressVoice actor for Charlie Brown arrested in Calif2012
examiner.comMan who was voice actor for Charlie Brown character arrested2012
CBS Los AngelesVoice Actor For Charlie Brown Charged With Stalking Ex-Girlfriend, Plastic Surgeon2012
ReutersCharlie Brown voice actor pleads not guilty to threats, stalking2012
Today ShowCharlie Brown Voice Actor Pleads Not Guilty to Stalking2012
San Diego Union TribuneWife Sentenced in Killing of Navy Doctor2012
Wall Street JournalNCAA Bracket Math2011
CBS8.comWoman says she was handcuffed when SDPD traffic cop fondled her2011
San Diego City BeatJail Mail - Sheriff May End Inmate Email System2011
Imperial Valley PressInvestigation into misuse of school funds2008
School NameMajorDegreeGraduated
Thomas Jefferson School of LawN/AJuris Doctorate2006
University of VermontN/AEnglish1999
California University of PennsylvaniaCriminal JusticeMS - Master of ScienceN/A
Speaking Engagements
Conference NameTitleDate
USD Criminal Law SocietyCriminal Law Practitioner Seminar2012