The Law Offices Of Jonathan F. Marshall
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The Law Offices Of Jonathan F. Marshall
If you or a family member has been charged with a crime in Passaic County, N.J., you have a lot on the line. You shouldn't trust your future to just any defense attorney. At the Law Offices of Jonathan F. Marshall, our powerful criminal defense team is made up of former prosecutors and public defenders from across the state.

We know what you are up against, and we will take every opportunity to fight the charges against you, rather than simply taking an easy plea deal. Most people feel panicked at the thought of being arrested or charged with a crime. That's understandable. However, just because you've been arrested doesn't mean there is a strong case against you.
Services
At the Law Offices of Jonathan F. Marshall, our six criminal defense lawyers leverage more than 100 years of combined experience to offer aggressive and informative criminal defense guidance to clients throughout Passaic County. As former prosecutors, we have the knowledge needed to help you understand the charges against you, the penalties stemming from a conviction and your options for defending yourself.
Managing partner of the Law Offices of Jonathan F. Marshall, a New Jersey criminal and DWI defense law firm with offices in Monmouth County, Middlesex County, Union County, Ocean County, Hudson County and Morris County. Mr. Marshall has been defending individuals charged with drug offenses, assault crimes, theft offenses, DWI, domestic violence, and other charges throughout NJ for almost twenty years.
Jason A. Seidman spent five years as a prosecutor and attorney for the Middlesex County Prosecutor's office, attaining a level of know-how that is invaluable to his criminal defense practice - and his clients - today. Mr. Seidman's current practice focuses on criminal law with a strong emphasis on felony-level cases.
William E. Wackowski joined the Law Offices of Jonathan F. Marshall in 2017, bringing more than 12 years of criminal law experience with him. A native Pennsylvanian, Mr. Wackowski earned a B.S. degree in education from Temple University in 1992 and then worked as a middle-school teacher for six years before deciding that he wanted to become a lawyer.
Brett went to undergraduate school at the University of Rhode Island and graduated with a History degree in 2012. He went to law school at Roger Williams University School of Law, and graduated in 2015. After law school, he was accepted into the Continuing Education Program at Princeton University for the Fall semester of 2015 and took Philosophy of Law which focused only on criminal law.
Reviews (7)
Marisa Santiago
Marisa Santiago
Jul 14, 2021
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I sent a request for a consultation through the website and no one called me. I called hoping to find legal representation for my case. Instead of allowing me to explain my situation, he asked me what I wanted to know, and also asked me why I thought I’d be able to handle my case on my own. I didn’t even get to explain that I haven’t even had my court date yet, and that I have no idea what I’m doing or where I’m at in my case because I don’t even know when I’m supposed to appear. I literally don’t know what I’m doing but he treated me like I was doing something wrong by calling
Ashley Sanchez
Ashley Sanchez
Nov 28, 2020
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These guys were amazing! My situation could not have been more stressful and overwhelming, but with Jon by my side I was able to get through everything with just a slap on the wrist. They were trusting and listened to everything I had to say without any judgement. I would recommend them to anyone. AMAZING!
Nicole Hansell
Nicole Hansell
Oct 19, 2020
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Positive: Professionalism, Quality, Responsiveness, Value
My fiance and I had an amazing experience working with the Jonathan Marshall team. Everyone in the office was so great to work with and made the process as smooth and easy as possible. We highly recommend working with them!
Lisa Hansell
Lisa Hansell
Sep 09, 2020
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Positive: Professionalism, Quality, Responsiveness, Value
My office had a great experience with the office of Jonathan Marshall. The team was extremely professional, quick to respond and resolved our difficult situation. I would highly recommend the law offices of Jonathan Marshall.
Great R.
Great R.
Jun 29, 2020
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Hello everyone,
I am so glad to tell you that if you are looking for the best attorney who understands you, your emotion and your problem due to any circumstance or mistake, which was done mistakenly then you should seek MR. Jonathan Marshall. He has great law knowledge and strong work ethic to deal and solve your problem. So, believe me and do not waste your time. Meet MR Marshall today if you are stuck in your life with any problems.
Dom Cuomo
Dom Cuomo
May 11, 2020
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Positive: Professionalism, Quality, Responsiveness, Value
I had a great experience working with The Law Offices of Jonathan Marshall. The team was a big help, providing timely responses and excellent legal consultation. Would absolutely recommend working with this firm.
Sharon Bastis
Sharon Bastis
Oct 30, 2019
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Got listen,before you think you know how to go, oh wait first thing was money. That wasn't an issue get off your high hoarse.