At Merson Law Office, we bring more than 20 years of criminal defense experience to every case. From DUIs and domestic violence charges to complex felonies and postconviction cases, we have handled nearly every situation imaginable. That experience allows us to identify the best strategies—the “escape hatches”—that others often miss.
We are here to guide you through this process with clarity, compassion, and aggressive advocacy when it matters most.
Your life and future should not be defined by a criminal charge. With the right defense, you can protect your rights, avoid devastating penalties, and move forward with confidence. We make the process straightforward so you always know what comes next.
When the weight of a criminal charge feels overwhelming, reach out. We’ll talk through your situation in a free, confidential call—no pressure, just answers.
We listen to your perspective, dig into the details, and build a defense plan designed for your specific case. No judgment—we’ll address what’s relevant to you.
From negotiations to motion hearings and through trial, we stand with you every step of the way. Our Longmont, Colorado criminal defense lawyer fights hard to protect your rights and keep your life on track.
Our criminal defense law firm defends clients throughout Colorado, including Boulder, Fort Collins, Adams County, and Weld County.
Protecting your rights in the face of life-altering allegations, with a defense built on compassion and experience.
Providing an unwavering defense against serious allegations with strategic preparation, detailed investigation, and steadfast advocacy.
Guiding clients through complex custody and abduction-related cases with a focus on second chances, fair resolutions, and postconviction relief options.
Providing skilled and sensitive representation for cases involving family or household allegations.
Defending against misdemeanor and felony assault charges with a strong, strategic approach to protect you from jail, prison, and lasting consequences on your record.
Defending clients against drug-related charges with a focused strategy to minimize penalties, protect their record, and safeguard their future.
Fighting license suspension, penalties, and long-term consequences in DUI and DWAI cases
Protecting young clients with proactive representation designed to minimize penalties, preserve records, and encourage paths toward rehabilitation.
James E. Merson has dedicated his career to criminal defense. With over two decades of experience as a Colorado criminal defense attorney, he has represented clients in some of the toughest cases Colorado courts see, from high-stakes felony trials to postconviction battles for second chances.
Clients trust him not only for his knowledge of the law but for his ability to listen, understand their perspective, and build a defense that reflects their goals.
I hired James Merson during one of the hardest moments of my life, facing serious charges that could have taken away my freedom for years. From day one, he took my case seriously, explained every step, and fought like someone who truly cared about the outcome. In court, he was sharp, fearless, and fully prepared. Outside of court, he treated me like a human being—not just a case number. His dedication, honesty, and belief in me made all the difference. Thanks to him, I got my life back. I can honestly say I owe him more than words can express. If you need someone who will fight for you with everything he has, hire James Merson. He won’t let you down.
Review Posted on Lawyers.com
Incredibly competent, kind and professional. Mr. Merson was fantastic throughout my entire process in municipal court. I was concerned with my situation and had no clue where to begin. He went above and beyond to explain, advise, and reassure me of the entire process from start to finish. He handled all essential communication with all parties and consistently kept me updated. He made a scary and unknown process clear and concise. The difference I felt in having Mr. Merson defend me compared to other lawyers I saw was incredible; he was incredibly knowledgeable about the entire process and had my back as a client. Highly recommend.
Review Posted on Avvo
Mr. Merson is nothing less than a 5-star lawyer. When we hired him for my husband's legal issues, he was with us every step of the way until the end of what ended up being a very long 3 year ordeal. After never having to deal with the legal system before, to being in the thick of it and facing the worst charges one could face, Mr. Merson took charge, led us through the process, answered every single question we had, and put in a tireless amount of effort through it all. I would recommend Mr. Merson to anyone and everyone that needs guidance through any legal problems. Mr. Merson is your guy, 100%.
Retaining Mr. Merson for my case was the best decision I could have made for myself. For my first time ever needing a lawyer, he was patient with all of my questions, quick to respond, and gave me the confidence I needed to proceed with my case. I would highly recommend his services for anyone who is dealing with legal troubles!
Mr. Merson was exceptional with me and my case (cases). Since never being personally charged with anything before in my life, he was very patient with me, despite my extreme nervousness and angst. He worked diligently and got my cases all dismissed. He knew I did nothing wrong. If anyone is reading this, that is searching for legal representation, you can stop. Mr. Merson will serve you well. After it was all said and done, he sent me an email to just check in on me. That meant so much after what I went through. He didn’t have to, and probably not many attorneys would. I will refer anyone that is in need of legal representation to Mr. Merson.
Merson should be your first and only call!!! Jim is the man!!! I was charged with multiple felonies in 2023 and was incarcerated and working with a different attorney that was no help whatsoever. My family got in touch with Jim, and ended up retaining him. He took over and quickly got things rolling extremely quickly. I had never been in legal trouble before and had no idea what was going on. Jim was very patient, and helped me understand what was happening and what his plan was. All things considered he got a very good outcome for me in my case, and I fully believe he is the go-to guy in Northern Colorado. I hope to never need Jim's services again, but should I need an attorney again Jim will be my first call!
Review Posted on Avvo
Jim Merson embodies the very ideals I believe are the original reasons most people believe in and want to fight for when each makes their decision to pursue a career in law. For me, personally, he asked for very little, although the things he did I adhered to and he was able to deliver a deal I am still amazed even came together. In the past Defense Lawyers and District Attorneys talks and outcomes felt rushed and just something in the way of their joint tee times and after court cocktails. Jim practiced law. He took what positive changes I made in my life along with evidence presented and was able to arrange an agreement I believe every party felt was best for the situation at hand; that includes myself and Jim as well as the DA and Judge. I am forever grateful for his commitment to his passion and would absolutely make him my first and only choice if anything arises where myself or family ever need a lawyer in the future, and I would recommend him to all friends and strangers just the same as my family. Lastly, his ability to read situations and people is impeccable. He always knew when I was becoming frazzled and never failed to deescalate a situation. I can't say enough. All it takes is the first conversation and you'll know you can stop looking. Jim is the only choice.
I am so thankful for the help that was provided to me and my son with a very troubling experience that we had recently. James was professional, kind, supportive, reassuring, and most of all extremely knowledgeable. I highly recommend anybody who needs help to reach out to him. I feel blessed that I found him and he was able to help guide us through an extremely stressful situation.
Legal issues are intimidating, complicated and extremely nuanced. When someone you love is faced with serious consequences, quality legal guidance and representation is absolutely necessary. Jim Merson was amazing throughout our multi-year long process. He provided us first and foremost with his impressive legal experience and aptitude to help navigate this overwhelming process. His patience was extraordinary, answering every scenario and question we had. His ability to manage our case and our expectations was phenomenal.
As a father of his client, Jim maintained an ethical standard and deferred to his client. However, what impressed me the most, was his ability to allow both me and my wife to be a part of the solution. I look back over this period and am still in awe how he was able to do all that he did and juggle at times our competing needs. The case was ultimately resolved to our complete and total satisfaction.
B/c I must mention it…he did all of this through the complications of the Covid Pandemic. For the ones I love the most in this world, there is no other legal expert I would now trust, outside of Mr. Merson.
Jim Merson's knowledge and experience really helped us deal with a challenging legal issue. Plus, his rates were more affordable than other lawyers I have worked with in Longmont. He was with us every step of the way and explained things to us. We really appreciate his help and would use him again.
970-219-2923