Facing a Criminal Appeal in Massachusetts? Our Aggressive Criminal Defense Attorneys Are Here to Help
If you or someone you love is navigating a criminal appeal in Massachusetts, it’s essential to have a trusted and experienced criminal defense attorney by your side. With offices in both Boston and Salem, the Law Office of Matthew W. Peterson focuses on helping individuals challenge criminal convictions in the Massachusetts Appeals Court. Our team includes aggressive criminal defense attorneys and a former prosecutor who understands the system from the inside. Whether your appeal is in Suffolk County or Essex County, we are committed to protecting your rights and building a strategic defense.

Massachusetts Criminal Appeals: What You Need to Know
Criminal appeals are complex legal proceedings that require a deep understanding of appellate rules and criminal law. Unlike trials, appeals are decided by a panel of judges who review the original court’s decisions for legal errors. The Massachusetts Appeals Court hears most criminal appeals from the state’s trial courts. A successful appeal can result in a reduced sentence, a new trial, or even a dismissal of charges.
As a focused criminal defense law firm, we assist clients throughout Eastern Massachusetts—including Boston, Brighton, West Roxbury, Chelsea, Salem, Lynn, Swampscott, Peabody, and Saugus—who are seeking post-conviction relief. If you believe the court made a mistake in your case, you have the right to appeal.

Why Choose an Aggressive Criminal Defense Attorney for Your Appeal?
Criminal appeals require a different legal strategy than trial defense. Our law firm approaches each case with meticulous preparation, persuasive legal writing, and a deep understanding of Massachusetts law. We take the time to examine trial records, identify constitutional violations, and build compelling arguments to present before an Appeal Court judge. Whether you’re appealing in the Massachusetts Appeal Court or seeking review from a US appeal court, we’re ready to fight for a better outcome.
Criminal Charges We Handle on Appeal
We focus on appealing a wide range of criminal convictions across Massachusetts. If you believe legal mistakes or violations occurred during your trial, our defense attorneys will thoroughly evaluate your case. We build detailed appellate arguments based on a careful review of the trial record, ensuring every potential issue is addressed. Below are some of the charges we frequently handle in criminal appeals.
Shoplifting, Vandalism, Larceny
Shoplifting is prosecuted under M.G.L. c. 266, § 30A, and involves the unauthorized taking of merchandise from a store. Vandalism, covered under M.G.L. c. 266, § 126A, includes willful destruction or defacement of property. Larceny, outlined in M.G.L. c. 266, § 30, involves unlawfully taking property valued above or below specific thresholds. If you were convicted under any of these statutes, our defense attorneys can assess the trial for evidentiary or procedural errors. A successful appeal may lead to reduced penalties or a retrial.
Assault and Battery
Assault and battery offenses fall under M.G.L. c. 265, § 13A, which covers both simple and aggravated forms of physical altercations. Appeals in these cases often focus on the trial court’s instructions to the jury or the admissibility of key evidence. Our attorneys thoroughly review every detail to identify mistakes that could change the outcome of your case. If the judge made errors during your original trial, an appeal can open the door for relief. Let our aggressive criminal defense attorneys guide you through the process.
Drug Possession and Distribution
Under M.G.L. c. 94C, drug crimes include charges ranging from possession to trafficking of controlled substances. Errors in search warrants, violations of Miranda rights, or improper jury instructions are common issues raised on appeal. We examine whether your constitutional rights were violated and pursue every avenue to challenge your conviction. Our team works to uncover flaws in the original prosecution and present them to the Massachusetts Appeals Court. With experience and strategic insight, we work to get your charges overturned or reduced.
Firearms and Weapons Offenses
Firearms charges are governed by M.G.L. c. 269, § 10, which includes unlawful possession, carrying without a license, or possession during the commission of a felony. Appeals can involve legal arguments about improper searches or misapplication of firearm laws. Our attorneys know how to navigate these technical issues and argue effectively before appellate judges. If you were wrongfully convicted or received an excessive sentence, we will advocate for your rights. Every detail matters, and we make sure none are overlooked.
OUI (Operating Under the Influence)
Massachusetts law M.G.L. c. 90, § 24 defines OUI offenses and related penalties. Errors in breathalyzer administration, field sobriety test interpretation, or legal procedures are often the basis for appeals. If you believe your rights were violated or evidence was mishandled, a strong appellate strategy can make a significant difference. Our team has extensive experience with OUI appeals and understands how to challenge both the legal and procedural aspects of these convictions. We’re here to help you move forward.
Serving Clients in Suffolk and Essex County for Criminal Appeals
Our criminal defense law firm represents individuals throughout Suffolk and Essex Counties who are challenging their convictions in the Massachusetts Appeals Court. Whether your case originated in a District Court or Superior Court in cities like Boston, Brighton, Dorchester, West Roxbury, Chelsea, Salem, Lynn, or Peabody, we are prepared to handle your appeal with the skill and dedication it deserves. Our familiarity with the local courts, judges, and appellate procedures gives us a strategic edge in pursuing favorable outcomes. From identifying trial errors to crafting strong legal arguments, we’re committed to advocating for your rights at every stage of the appellate process.
What Happens in a Criminal Appeal?
An appeal is not a new trial but rather a legal review of the original court’s decision. The appellate process generally includes:
- Filing a Notice of Appeal – Must be filed within 30 days of the conviction.
- Preparing the Record – Includes trial transcripts and exhibits.
- Brief Writing – We submit a legal argument identifying errors in the trial.
- Oral Argument – Our defense attorney may appear before the Appeal Court to argue your case.
- Decision – The Appeal Court judge issues a written decision, which may affirm, reverse, or remand the case.
Contact a Massachusetts Defense Attorney for Your Appeal
If you’re considering an appeal, timing and strategy are crucial. The Law Office of Matthew W. Peterson is committed to offering experienced, aggressive criminal defense to clients in both Suffolk and Essex Counties. We take your case personally and evaluate every detail to ensure your rights are upheld.
Contact us now to set up a strategy session with an experienced Massachusetts defense attorney. Whether your appeal is headed to the Massachusetts Appeal Court or beyond, we’re ready to stand by your side.
Frequently Asked Questions
Can any conviction be appealed in Massachusetts?
Yes, most criminal convictions can be appealed. You typically must show that a legal error occurred during your trial that affected the outcome.
How long do I have to file a criminal appeal in Massachusetts?
Under the Massachusetts Rules of Appellate Procedure, you generally have 30 days from the final judgment to file your notice of appeal.
What is the Massachusetts Appeal Court?
The Massachusetts Appeals Court is the intermediate appellate court that hears most appeals from trial courts. It reviews legal arguments, not new evidence.
Do I need a different attorney for an appeal?
Yes, it’s often recommended. Appeals require a different skill set than trial law, including written legal arguments and procedural knowledge.
What happens if I win my appeal?
If your appeal is successful, your conviction may be reversed, your sentence reduced, or your case sent back for a new trial.


