• Available 24/7
  • Credit Cards Accepted
  • Free Consultation
  • Morristown Office 973-309-7050
  • Parsippany Office 973-404-7966
The Law Offices of Jonathan F. Marshall

Morris County

NJ Criminal Defense Lawyers


Our team of skilled attorneys includes former County and Municipal Prosecutors with over 200 years combined experience and is available to assist you immediately.

Free Consultation


Never have I thought I would find myself facing criminal charges. Being dragged by awful circumstances to dealing with the ugly side of the law, having a rock such as Keith was the best choice I have made. Throughout this agonizing process, he has made me aware of every step and potential outcome. Keith made me feel comfortable and was patient with all my questions and concerns. Imfirthemore in like your typical lawyer Keith was available 24/7. Whether via calls/text/emails, he was always quick to response which I found to be reassuring. I’m glad to say that everything played out the way he predicted and life can now go on its normal corse.

~ A great choice in a bad situation

As I presented my case to Keith Oliver, he consulted me with options for best resolution. Mr Oliver keep in contact with me regarding all correspondences on my case, and consulting me with decisions. At time of court Mr Oliver was present and with his expertise settled the case in my best interest quickly and accurately. I would recommend Mr Oliver highly.


Mr. Oliver gave us our lives back. He faught relentlessly for our interests, he was diligent, savvy, communicative, paid attention to detail, was respectful, highly ethical and advocated for the best outcome he could for us. The result exceeded our expectation – and I think even his own. He’s simply amazing.

~ Amazing attorney

Mr. Oliver is an exceptional attorney, and his expertise in criminal law is proven. From the initial consultation and throughout the entire legal process, Mr. Oliver remained patient, communicative, and informative, promptly keeping me up-to-date with changes and new information. His dedication made me feel calm, confident and reassured, which helped me focus on work and maintaining a “normal” life during a personal turmoil. Mr. Oliver is highly recommended for his talent, knowledge, enthusiasm, and valuable resources.

~ Worth it if you value a Peace Of Mind!

Keith was exceptional in the handling of my case. He provided clear, concise legal advise, that led to my dismissal of all charges. His knowledge, temperament was ideal for dealing with delicate matters involving two parties in dispute. I highly recommend Keith’s expert representation.

~ The very best there is!

Keith is great. Top notch guy. He always returned my phone calls or emails very quickly, and was always on time when we were supposed to meet. I would definitely recommend him and would not hesitate to use him again.

~ A+ experience dealing with Keith Oliver

Our family has NEVER had any dealings with the criminal justice system before. Keith made us feel very comfortable with the entire process. This was a very scary time for us since the charges we were facing were felonies. He promised us he would give our son’s case 150% and would keep us informed by giving us more than enough information during the entire process…from the beginning to end. He did just that! We always received immediate responses to our calls, etc. We always received advance notice of all court dates and times which was much appreciated, especially since we were out-of-state clients. His Brief-writing & investigative skills are awesome. In the courtroom, he was superb! He is very knowledgeable of the law and appears to be well respected by the judges and the prosecutors. He was very direct and honest, yet personable to us and deeply cares about the client and the outcome of the case. Our nick name for him was “Attorney Perry Mason”. lol. Keith is the best and our family highly recommends him to anyone with a legal situation! He will forever be in our thoughts and prayers. We love you Keith!

~ Attorney Keith Oliver Gives 150% To His Clients!

Keith was everything I could have hoped for as representation. He pushed the system on my behalf to get the best outcome he could. I owe this man much more than he charged, and would recommend him in a heart beat.

~ What a lawyer should be.

I got into troubles that could have affected not only legally but also professionally. Mr. Oliver responded to all my calls within less than 30 min. He always took the time to discuss and explain about my status. He was empathic and professional throughout the painful process of my trial. Most impotently he got me the best outcome as my case was dismissed and later on expunged.

~ Strongly recommend this lawyer

Keith is a very knowledgeable and knows his stuff.he made me very comfortable through out my case.he was very responsive and quick to call me back with any questions or concerns I had before court.he was always on time meeting him.he made the right choice for me in my case and I was very pleased with the outcome.i would recommend him to anyone!

~ Highly recommend Keith as an attorney to represent you!

Keith was very personable, supportive and professional, always returning my calls almost immediately. He took the time to explain every detail of my case and truly fought to reach a good outcome. Im very pleased with his services and RECOMMEND him highly!!!

~ Very very pleased!

Mr. Oliver assisted my son in some legal issues he found himself involved in. Keith was caring, honest and helped us attack the matter the best way legally. He was open and specific regarding the details of our matter and thankfully everything worked out the way he described. I would highly recommend his services and hopefully I will not needs his services anytime soon but if I do need legal assistance he will be the first call I make.

Jim B.

~ Excellent Legal Representation

I definitely recommend Mr. Keith Oliver to anyone looking for a great lawyer who they can easily communicate to. Mr. Oliver always responded to my calls and text messages and was always available to answer my million and one questions. He made me feel at ease from the beginning and was very understanding to my nervousness. Keith Oliver is very knowledgable and explains the different scenarios of the outcome very well. I am very happy to have found Keith Oliver and to have trusted him as my lawyer.

~ Excellent lawyer

Living out-of-state, a member of our family had an outstanding warrant for drug addiction-related shoplifting charges as well as a probation violation charge.
Attorney Keith Oliver was able to successfully resolve these legal issues with the best possible outcome. He is a highly skilled and professional litigator who easily establishes rapport with his peers and judges. He is a very personable and compassionate individual – both attributes essential in helping us through the legal quagmire. Mr. Oliver guided us through the process, always keeping us educated and informed. He worked diligently, patiently, and tenaciously to achieve excellent outcomes.
Hiring Keith Oliver was the best decision we could have made. We are forever grateful for his representation, protection, and guidance. He is the best!!!

~ Highly Capable and Skilled Criminal Defense Attorney

Mr. Oliver assisted our family in a criminal defense matter. His advice proved invaluable and he was able to secure a very favorable outcome in the case. He is highly knowledgeable and very responsive. It gave us a great deal of comfort to know that he would quickly respond to any email/phone inquiries with accurate legal advice. I highly recommend Mr. Oliver to anyone looking for a great lawyer.

~ Highly Recommend

I retained the services of Mr. Olver on two issues and he was very professional and qualified in resolving the legal problems I had encountered. Mr Oliver is a Excellent attorney and I would highly recommend.

~ Great Lawyer

Keith help out to resolve my problem early this year that giving me straight forward info and very responsive when I need answers. Strongly recommend whoever needs DWI problem.

~ Great lawyer

Keith was such a great help, both for myself and my parents. My parents have dealt with attorneys for their challenges and they were impressed by all the attention he provided in garnering a positive outcome. He is very bright, great at preparing you as a client, and comforting. Keith is always so responsive, which is rare. I highly recommend him.

~ Bright and Very Responsive

I had the pleasure to have Kaith represent me. He made sure we get the best possible outcome. During the court session, he confronted a senior Judge and Keith didn’t get intimidated arguing a legal point when it came to having an outcome in my favor. Highly recommended and he will dedicate all his attention to your case and needs.

~ A smart and aggressive lawyer