Criminal Defense Attorney

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Injustice anywhere is a threat to justice everywhere.

– Martin Luther King Jr.

How Can I Help You?

I specialize in Criminal Defense. It is the only type of law I practice. The people I help range from juveniles to adults. Everyone deserves a vigorous defense, every case is important, and everyone deserves to be treated with respect. I do not judge my clients, I defend them.

How Can I Get Off Megan’s Law in New Jersey?

All sex offenders subject to Megan’s Law must remain registered for life. 

Sex offenders can apply to be removed from the Sex Offender Registry only if they committed one (1) offense, it has been at least 15 years since the offense and they can prove to the court that they are no longer a threat to the safety of others. Sex offenders who were under the age of 14 at the time of the offense can apply to be removed from the Sex Offender Registry if they are now over the age of 18. 

Make an appointment to see if you qualify to be removed from the Sex Offender Registry.

Can I Expunge My Criminal Record in New Jersey?

In New Jersey, Under N.J.S.A. 2C:52-7 if you have committed only one (1) non-serious felony or misdemeanor then you can be eligible for expungement. Expungement orders are left at the discretion of the judge in the Superior Court of the county where the arrest or prosecution took place. Eligible persons may file a Petition for Expungement and pay a fee to the court to be considered. 

Crimes that may be expunged include drug possession, shoplifting, weapons violation, and burglary. Serious felonies that are not eligible for expungement are: 

  • Aggravated Criminal Sexual Conduct or Assault
  • Anarchy
  • Arson
  • Conspiracy
  • Death by Auto
  • Embracery
  • Endangering the Welfare of a Child
  • False Imprisonment
  • False Swearing
  • Forcible Sodomy
  • Kidnapping
  • Luring or Enticing
  • Manslaughter
  • Murder
  • Perjury
  • Rape
  • Robbery
  • Treason
  • Aiding, assisting or concealing people who committed any of these crimes
What Is Pre Trial Intervention PTI in New Jersey?

The Pretrial Intervention program provides first-time guilty defendants with the opportunity for an alternative to the traditional criminal justice process of prosecution. The goal of the PTI program is to solve personal problems with rehabilitation services in order to deter future crimes. The program will be considered for offenders who can be reasonably expected to be deterred from criminal behavior. 

If you think you may be eligible for PTI, find more information in the Pretrial Intervention Brochure and the Pretrial Intervention Application. Or contact your Local Superior Court Criminal Division.

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Areas of Practice

DUI (Drunk Driving)

In the State of New Jersey it is illegal to operate a motor vehicle when your blood alcohol concentration (BAC) is .08 percent or above.

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John W Hartmann, Esq. is a criminal defense lawyer. He is committed to protecting the rights of people accused of drug crimes, including drug trafficking.
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I represent individuals charged with a variety of traffic offenses. I am proactive and strategic. I’ll help you to limit the negative consequences and protect your driver’s license.

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Sexual Assault Offenses

We knows exactly how to protect an accused’s constitutional and legal rights. You may rest assured that, as our client, you or your loved one will receive customized and vigorous representation throughout the entire criminal process.

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State Crimes

Being charged with a felony or misdemeanor-level crime is not something that should ever be taken lightly. skilled criminal lawyer can fight for your rights and help to avoid or minimize those consequences as much as possible.

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Firearm Possession

Possession of any firearm without a proper and current license is considered unlawful possession of a weapon, and it is classified as a felony of either second or third degree, depending on the type of firearm involved.

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What Our Clients Say

Bloody BillyJuly 7, 2020
John did a great job resolving my case thoroughly and satisfactorily. I would highly recommend him!Evan CJune 18, 2020
I was facing some pretty serious charges in New Jersey. It was actually 2nd degree felonies or indictable offensives as it’s called there. Both carrying 10 years max. Mr Hartmann took my case after hearing my side of the story. Was very professional and hard working. He worked as if it was him facing the charges and got me a fine and no probation in the end. I’d use him again no hesitation. I’d highly recommend him to anyone facing charges in New Jersey. Awesome work, I couldn’t of asked for better representation.SpydR513May 21, 2020
I was involved in a unique situation and Jon had done such an incredible job with my case! He was very confident and knowledgeable and very professional through the entire process! I would highly recommend John to anyone and he was very fair with the cost that occurred during the trial! I could’ve never done it without him and I’m so impressed that I think about it each day and I am so grateful for him! I did not know him before hand and trusted him with a matter that what affected the rest of my life I couldn’t of expected it handled any better! So much so that I had to write my first review ever for anybody! Thankyou so so very much for your hard work! And sticking by my side! ScottScott ShildtMay 6, 2020

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Years of experience


Positive reviews
Former State Assemblyman for Mercer County
Former Municipal Prosecutor