Manassas Criminal Defense Lawyer

Delivering Great Manassas DUI / DWI Defense

Virginia DUI law can be merciless, and Prince William County prosecutors are not pushovers with settlement negotiations. A DUI or DWI conviction can upend your driving privileges, saddle you with substantial fines and car insurance increases, expose you to jail time, and leave long-term harm to the defendant’s personal and professional life. These adverse consequences can haunt you.

As a member of the National College for DUI Defense, Jon Katz has been trained by one of the nation’s top police instructors in field sobriety testing. That training, combined with his extensive trial ability and persuasive skills, means Jon arrives at every DUI case knowing how these prosecutions are constructed—and precisely where they fall apart. He knows the traps and assumptions built into these cases and how to dismantle them. If a plea offer isn’t in your best interest, Jon doesn’t hesitate to take your DUI case to trial and fight for an acquittal.

Drug Crime Defense in Prince William County

Drug arrests can have long-term consequences for your freedom, career, security clearance, and immigration status. Drug prosecutions need to be fought tooth and nail. The quality, ability, know-how, experience, and devotion of your Virginia drug defense lawyer can make a major difference to your defense. Jon Katz defends people in Manassas and Prince William County accused of drug crimes by challenging searches and seizures, attacking undercover operations and informants, scrutinizing government chemist work and testimony, addressing innocent reasons for being near alleged contraband, and attacking dragnet arrests.

Jon leaves no stone unturned when it comes to drug prosecutions. The prosecution's case may at first seem problematic for a defendant, but weaknesses in the prosecution's case, Constitutional violations, and reasonable doubt can only be pursued with tireless preparation, dismantling the prosecution's efforts, and keeping eyes on the prize of victory. Jon brings that drive and ability to every drug-defense client's campaign for favorable court outcomes.

Assault and Violent Crime Defense

Assault and violent offense charges are often built on a single account of events—one that may be incomplete, exaggerated, or filtered through the lens of someone with their own agenda. Jon Katz takes nothing in the police report at face value. His defense begins with a rigorous challenge to the accuracy of the allegations, the development of the full factual record, and the pursuit of every essential defense available to defeat a possible assault conviction. Full trial readiness is not optional in these cases—it is what forces the prosecution to confront the real weaknesses in its evidence.

Jon understands that what the government calls a violent offense often involves disputed facts, complicated relationships, and circumstances that look very different once the defense has done its work. He builds toward trial from day one, presenting a persuasive counter-story, attacking the prosecutor's case, and persuasively presenting his clients' defense.

Firearms and Weapons Defense in Manassas

Virginia imposes serious penalties for weapons offenses, and the consequences of a conviction can be severe and long-lasting. Jon is a strong advocate for Second Amendment rights to possess and use firearms and other weapons. He has experience firing numerous semiautomatic rifles and handguns, and he brings that firsthand familiarity to bear when pursuing his clients' best defense. Jon challenges the search and seizure of any weapon found on or near a defendant, contests knowing possession where the facts support it, and pursues every lawful-use and possession defense available under Virginia law. Weapons defense —whether involving alleged unlawful carrying, possession by a prohibited person, or a firearm charge tacked onto another offense— requires both technical command of the law and the persuasive force to pursue evidence suppression and acquittal. Jon delivers both strengths.