O'Brien Hatfield, PA
OâBrien Hatfield, PA is a federal and state criminal defense law firm with offices in Tampa, Florida, Orlando, Florida, and Miami, Florida.
This lawyer is licensed to practice in Florida and has no record of discipline from the Florida bar association. *
O'Brien Hatfield, PA
OâBrien Hatfield, PA is a federal and state criminal defense law firm with offices in Tampa, Florida, Orlando, Florida, and Miami, Florida.
This lawyer is licensed to practice in Florida and has no record of discipline from the Florida bar association. *
Attorney Mark J. OâBrien is the firmâs managing partner and handles federal criminal cases throughout Florida and across the country. Attorney Victoria E. Hatfield is an equity partner who defends criminal cases in every county and circuit court in the State of Florida. Oliva M. Goodman is a partner and in charge of the firmâs criminal appellate division handling appeals and post-convictions motions. We offer legal services in English, Spanish, and Mandarin.
Tampa Office
511 W Bay Street
Suite 330
Tampa, FL 33606
(813) 669-7332
Yes. We offer free initial consultations via in person, video conferencing, or via telephone.
We offer fixed, flat fee retainer agreements for the entirety of your criminal case. Or we offer hourly rate retainer agreements for your criminal case.
TBD based upon the attorney chosen.
24 hours a day, 7 days a week, 365 days a year
Jeanette Hevel
Yes
English, Spanish, and Mandarin
-
O'Brien Hatfield, PA - Orlando
121 South Orange Avenue
Suite 1500
Orlando, FL 32801 -
O'Brien Hatfield, PA - Miami
1001 Brickell Bay Drive
Suite 2700 M-!
Miami, FL 33131
OâBrien Hatfield, PA is a federal and state criminal defense law firm with offices in Tampa, Florida, Orlando, Florida, and Miami, Florida.
Who We Are
I am the managing partner of OâBrien Hatfield, PA - a federal and state criminal defense law firm with offices in Tampa, Orlando, and Miami. My law firm consists of four lawyers, four legal assistants, two private investigators (both former United States Federal Special Agents), one sentencing mitigation specialist (a former United States Probation Officer), and numerous third party experts (who assist on a case by case basis).
Who I Am
I am nationally recognized criminal defense attorney with over 25 years of experience in state and federal criminal courts all throughout the country. After beginning my professional career as a Miami, Florida prosecutor in the late 1990âs, I organized my own law firm in 2002, based upon the professional lessons I learned to that point in my life, with the goal defending those accused of state and federal crimes. I was born and raised in New York. I attended law school and completed my internships in and around Philadelphia, Pennsylvania. And I started my career in Miami, Florida. There is nothing I have not seen, done, or dealt with in and/or out of a criminal courtroom. I bring 25 years of state and federal criminal court experience to those accused of federal crimes in federal criminal courts throughout the nation.
My Team
In addition to my experience and training, I have assembled a team to assist in defending my clients. Similar to my role as a former prosecutor, I brought professionals into the fold who used to work in various federal law enforcement capacities. It is important to stay one step ahead of the other side and the only true way to accomplish this goal is to have already done what the other side is planning to do. I supplement my experience, training, and skill with two former special agents and one former federal officer, each of whom have a very specific sets of skills. This includes a former Drug Enforcement Agency (DEA) Federal Special Agent, a former Internal Revenue Service (IRS) Criminal Investigation Division Federal Special Agent, and a former United States Probation Officer. Together, these three individuals have approximately 100 plus combined yearsâ experience (over 30 years each) in federal criminal courts throughout the country:
A Former United States Probation Officer
I have incorporated the knowledge, skill, training, and experience of a former United States Probation Officer who served United States District Court Judges in the preparation of pre-sentence investigation reports for over twenty-six years into my law firm. He has a wide ranging background related to the United States Sentencing Guidelines, statutory penalties, and mitigation development. During the first ten years of his career, he served as a United States Probation Officer and then a Senior United States Probation Officer in a special investigations division, conducting hundreds of pre-sentence investigations in a wide variety of criminal cases. During the last sixteen years of his career, he served as the supervisor of a special investigations unit where he analyzed nearly a thousand pre-sentence investigation reports for accuracy and completeness prepared by subordinate United States Probation Officers. Throughout his three decades in the public and now private practice, he received specialized training in all matters related to federal sentencing, including criminal background investigations, sentencing guideline applications, and legal research. Aaron also served as an adjunct trainer for both the Administrative Office of United States Courts and the Federal Judicial Center. Late in his career, he was commissioned as a member of the Administrative Office of the United States Courts Pre-Sentence Investigation Report Working Group. As a member of my law firm, and no other, Aaron now uses the knowledge and expertise he gained during his career to assist my clients in the pre-plea, pre-sentencing, and post-sentencing phases of their federal criminal cases. Over the course of my representation of you, he will conference with you multiple times to develop mitigation and assess your federal sentencing guideline ranges and statutory penalties. This is done at my direction. It is important to note that he shares with you the same attorney-client privilege that I share. Therefore, please be fully cooperative and truthful with him at all times. No other law firm has someone like him. Please take advantage of what he has to offer. We are truly blessed to have his expertise and experience on our side.
A Former White Collar Crime Federal Special Agent
I also incorporated the knowledge and skill and the training and experience of a former Federal Special Agent with the IRS Criminal Investigations Division. After twenty-seven years as a federal agent, he is now one of two of my law firmâs licensed private investigators. He is also a certified fraud examiner and forensic accountant. He provides invaluable knowledge and expertise in all of our white collar, fraud, and money laundering cases.
A Former Federal Intelligence and Narcotics Special Agent
We also have the knowledge and skill and the training and experience of a retired United States Marine Intelligence Officer and former United States Drug Enforcement Administration (DEA). He was the honor graduate in his DEA class. After graduating, he transferred to a then newly formed, paramilitary, special operations unit known as FAST. The FAST Unit deployed to the country of Afghanistan to assist in investigations against narcotics organizations supplying terrorists with funding. While in Afghanistan, he successfully extradited a top tier heroin drug traffickers and narco-terrorists to the United States for prosecution. Over his career, he participated in other world deployments, wherein he advised foreign nationals on the investigation of narco-traffickers. He has participated in all aspects of narco-trafficking law enforcement, including surveillance operations, wiretap operations, and arrest operations at the state and federal level. He was in charge of macro and micro narco-trafficking investigations, including state, national, and worldwide operations, including coordination with local agencies. After twenty-five distinguished years with the DEA, he finished his career in Tampa, Florida, wherein he retired as a Group Supervisor. He understands how federal, state, and local law enforcement agencies and prosecutors operate nationwide.
Bar and Court Admissions
I am a member of the Bar of the State of Florida (1998) and the Bar of the Commonwealth of Massachusetts (1998). I am also a member of the Bar of the State of Montana (2023).
In addition, I am a member of the Supreme Court of the State of Florida, the Massachusetts
Supreme Judicial Court, the Montana Supreme Court, and I a member or a pro hac vice member of the following federal district courts:
⢠Supreme Court of the United States of America
⢠United States Court of Appeals for the First Circuit
⢠United States Court of Appeals for the Second Circuit
⢠United States Court of Appeals for the Ninth Circuit
⢠United States Court of Appeals for the Eleventh Circuit
⢠United States District Court for the Northern District of Alabama
⢠United States District Court for the Eastern District of Arkansas
⢠United States District Court for the Central District of California
⢠United States District Court for Connecticut
⢠United States District Court for the Southern District of Florida
⢠United States District Court for the Middle District of Florida
⢠United States District Court for the Northern District of Florida
⢠United States District Court for the Southern District of Georgia
⢠United States District Court for the Middle District of Georgia
⢠United States District Court for the Northern District of Georgia
⢠United States District Court for the Southern District of Illinois
⢠United States District Court for the Southern District of Indiana
⢠United States District Court for the Eastern District of Kentucky
⢠United States District Court for Massachusetts
⢠United States District Court for the Eastern District of Michigan
⢠United States District Court for the Western District of Michigan
⢠United States District Court for the Southern District of Mississippi
⢠United States District Court for the Western District of Missouri
⢠United States District Court for Montana
⢠United States District Court for the Southern District of New York
⢠United States District Court for North Dakota
⢠United States District Court for Northern District of Oklahoma
⢠United States District Court for Rhode Island
⢠United States District Court for the Eastern District of Texas
⢠United States District Court for the Western District of Texas
⢠United States District Court for the Northern District of Texas
⢠United States District Court for the Eastern District of Virginia
⢠United States District Court for the Eastern District of Washington
⢠United States District Court for the Western District of Washington
⢠United States District Court for the Southern District of West Virginia
The United States Constitution guarantees every individual the right to a fair trial and the presumption of innocence until proven guilty. This fundamental principle is upheld in federal criminal defense, where Mr. OâBrien works tirelessly to protect the rights of the accused.
The role of a criminal defense attorney is to provide legal representation to individuals charged with federal and state crimes. These crimes can range from drug trafficking and white-collar crimes to terrorism and espionage. The stakes are high, as a conviction can result in lengthy prison sentences, hefty fines, and a criminal record that can follow an individual for the rest of his or her life.
One of the key arguments in favor of hiring O'Brien Hatfield, PA for your federal and state criminal defense is the importance of protecting the rights of the accused. The Constitution guarantees the right to a fair trial, which includes the right to legal representation. Without a skilled attorney, a defendant may not fully understand their rights or the legal process, which can lead to an unfair trial and an unfair result.
Another argument in favor of hiring O'Brien Hatfield, PA is the need to ensure that the government follows due process. The government has vast resources at its disposal, including federal and state law enforcement agencies and prosecutors. A skilled defense attorney will level the playing field by challenging the government's evidence and ensuring that you are treated fairly.
White collar crime is a term used to describe non-violent crimes committed by individuals in positions of power or trust, typically in the business or financial sectors. These crimes can include fraud, embezzlement, insider trading, and money laundering, among others. When accused of such crimes, individuals often seek the white collar criminal defense services of Mr. OâBrien to represent them in federal and state criminal court.
Our role is to protect the rights of his clients and ensure they receive a fair trial. This can involve challenging the evidence presented by the prosecution, negotiating plea deals, and presenting a strong defense case. In many cases, wherein trial is not the best option, we will work to mitigate the potential consequences of a conviction, such as fines, restitution, and most importantly imprisonment.
One of the key arguments in favor of retaining OâBrien Hatfield, PA is that everyone is entitled to a fair trial, regardless of the nature of the crime they are accused of committing. This is a fundamental principle of the American justice system, and it is the responsibility of the defense attorney to ensure that this principle is upheld. Additionally, we can help to prevent wrongful convictions by challenging the evidence presented by the prosecution and presenting a strong defense case with his federal and state criminal defense team.
The lawyers of O'Brien Hatfield, PA are a crucial component of the American justice system. He ensures that the rights of the accused are protected, and that the government follows due process. While the stakes are high, a skilled criminal defense attorney can make a significant difference in the outcome of a federal case.
Mark J. O’Brien, Esquire is a nationally recognized Federal Criminal Defense Attorney with over 25 years’ experience in criminal courts all throughout the country. After beginning his professional career as a Miami, Florida prosecutor in the late 1990’s, Mr. O’Brien organized his own law firm in 2002 based upon the professional lessons he learned to that point in his life with the goal defending those accused of federal crimes with a mix of old school values and new school ideas.
During first decade in private practice from 2002 to 2012, Mr. O’Brien defended individuals and corporations charged with federal crimes throughout federal criminal courts in Florida. From 2012 to the present, Mr. O’Brien has accepted the defense of clients in federal criminal courts throughout the entire country, in addition to his previously established practice in all federal courts in Florida. Case after case, success after success, in federal court after federal court, all throughout the country, has resulted in a growing legacy. To put it simply, Mr. O’Brien wins and, as a result, he is a lawyer in demand.
Mr. O’Brien grew up in New York, attended law school near Philadelphia, Pennsylvania, and started his career in Miami, Florida. There is nothing he has not seen, done, or dealt with in and/or out of a criminal courtroom. New York raised, Philly tough, and Miami tested, Mr. O’Brien brings his 25 years of federal criminal court experience to those accused of federal crimes in federal criminal courts throughout the nation. Mr. O’Brien has the resources, both in his team and in his experience and his training, to tackle your federal criminal case and accomplish the only objective that matters: Win.
Bar Number: 0160210
Florida, 1998
Bar Number: 639865
Massachusetts, 1998
Bar Number: 14114
Montana, 2023
Delaware School of Law
J.D., 1998
Siena College
BA English Literature, 1995
Mark J. O’Brien, Esquire is a nationally recognized Federal Criminal Defense Attorney with over 25 years’ experience in criminal courts all throughout the country. After beginning his professional career as a Miami, Florida prosecutor in the late 1990’s, Mr. O’Brien organized his own law firm in 2002 based upon the professional lessons he learned to that point in his life with the goal defending those accused of federal crimes with a mix of old school values and new school ideas.
During first decade in private practice from 2002 to 2012, Mr. O’Brien defended individuals and corporations charged with federal crimes throughout federal criminal courts in Florida. From 2012 to the present, Mr. O’Brien has accepted the defense of clients in federal criminal courts throughout the entire country, in addition to his previously established practice in all federal courts in Florida. Case after case, success after success, in federal court after federal court, all throughout the country, has resulted in a growing legacy. To put it simply, Mr. O’Brien wins and, as a result, he is a lawyer in demand.
Mr. O’Brien grew up in New York, attended law school near Philadelphia, Pennsylvania, and started his career in Miami, Florida. There is nothing he has not seen, done, or dealt with in and/or out of a criminal courtroom. New York raised, Philly tough, and Miami tested, Mr. O’Brien brings his 25 years of federal criminal court experience to those accused of federal crimes in federal criminal courts throughout the nation. Mr. O’Brien has the resources, both in his team and in his experience and his training, to tackle your federal criminal case and accomplish the only objective that matters: Win.
Bar Number: 0160210
Florida, 1998
Bar Number: 639865
Massachusetts, 1998
Bar Number: 14114
Montana, 2023
Delaware School of Law J.D., 1998
Siena College BA English Literature, 1995
Attorney Mark J. OâBrien is the firmâs managing partner and handles federal criminal cases throughout Florida and across the country. Attorney Victoria E. Hatfield is an equity partner who defends criminal cases in every county and circuit court in the State of Florida. Oliva M. Goodman is a partner and in charge of the firmâs criminal appellate division handling appeals and post-convictions motions. We offer legal services in English, Spanish, and Mandarin.
Tampa Office
511 W Bay Street
Suite 330
Tampa, FL 33606
(813) 669-7332
Yes. We offer free initial consultations via in person, video conferencing, or via telephone.
We offer fixed, flat fee retainer agreements for the entirety of your criminal case. Or we offer hourly rate retainer agreements for your criminal case.
TBD based upon the attorney chosen.
24 hours a day, 7 days a week, 365 days a year
Jeanette Hevel
Yes
English, Spanish, and Mandarin
-
O'Brien Hatfield, PA - Orlando
121 South Orange Avenue
Suite 1500
Orlando, FL 32801 -
O'Brien Hatfield, PA - Miami
1001 Brickell Bay Drive
Suite 2700 M-!
Miami, FL 33131
OâBrien Hatfield, PA is a federal and state criminal defense law firm with offices in Tampa, Florida, Orlando, Florida, and Miami, Florida.
Who We Are
I am the managing partner of OâBrien Hatfield, PA - a federal and state criminal defense law firm with offices in Tampa, Orlando, and Miami. My law firm consists of four lawyers, four legal assistants, two private investigators (both former United States Federal Special Agents), one sentencing mitigation specialist (a former United States Probation Officer), and numerous third party experts (who assist on a case by case basis).
Who I Am
I am nationally recognized criminal defense attorney with over 25 years of experience in state and federal criminal courts all throughout the country. After beginning my professional career as a Miami, Florida prosecutor in the late 1990âs, I organized my own law firm in 2002, based upon the professional lessons I learned to that point in my life, with the goal defending those accused of state and federal crimes. I was born and raised in New York. I attended law school and completed my internships in and around Philadelphia, Pennsylvania. And I started my career in Miami, Florida. There is nothing I have not seen, done, or dealt with in and/or out of a criminal courtroom. I bring 25 years of state and federal criminal court experience to those accused of federal crimes in federal criminal courts throughout the nation.
My Team
In addition to my experience and training, I have assembled a team to assist in defending my clients. Similar to my role as a former prosecutor, I brought professionals into the fold who used to work in various federal law enforcement capacities. It is important to stay one step ahead of the other side and the only true way to accomplish this goal is to have already done what the other side is planning to do. I supplement my experience, training, and skill with two former special agents and one former federal officer, each of whom have a very specific sets of skills. This includes a former Drug Enforcement Agency (DEA) Federal Special Agent, a former Internal Revenue Service (IRS) Criminal Investigation Division Federal Special Agent, and a former United States Probation Officer. Together, these three individuals have approximately 100 plus combined yearsâ experience (over 30 years each) in federal criminal courts throughout the country:
A Former United States Probation Officer
I have incorporated the knowledge, skill, training, and experience of a former United States Probation Officer who served United States District Court Judges in the preparation of pre-sentence investigation reports for over twenty-six years into my law firm. He has a wide ranging background related to the United States Sentencing Guidelines, statutory penalties, and mitigation development. During the first ten years of his career, he served as a United States Probation Officer and then a Senior United States Probation Officer in a special investigations division, conducting hundreds of pre-sentence investigations in a wide variety of criminal cases. During the last sixteen years of his career, he served as the supervisor of a special investigations unit where he analyzed nearly a thousand pre-sentence investigation reports for accuracy and completeness prepared by subordinate United States Probation Officers. Throughout his three decades in the public and now private practice, he received specialized training in all matters related to federal sentencing, including criminal background investigations, sentencing guideline applications, and legal research. Aaron also served as an adjunct trainer for both the Administrative Office of United States Courts and the Federal Judicial Center. Late in his career, he was commissioned as a member of the Administrative Office of the United States Courts Pre-Sentence Investigation Report Working Group. As a member of my law firm, and no other, Aaron now uses the knowledge and expertise he gained during his career to assist my clients in the pre-plea, pre-sentencing, and post-sentencing phases of their federal criminal cases. Over the course of my representation of you, he will conference with you multiple times to develop mitigation and assess your federal sentencing guideline ranges and statutory penalties. This is done at my direction. It is important to note that he shares with you the same attorney-client privilege that I share. Therefore, please be fully cooperative and truthful with him at all times. No other law firm has someone like him. Please take advantage of what he has to offer. We are truly blessed to have his expertise and experience on our side.
A Former White Collar Crime Federal Special Agent
I also incorporated the knowledge and skill and the training and experience of a former Federal Special Agent with the IRS Criminal Investigations Division. After twenty-seven years as a federal agent, he is now one of two of my law firmâs licensed private investigators. He is also a certified fraud examiner and forensic accountant. He provides invaluable knowledge and expertise in all of our white collar, fraud, and money laundering cases.
A Former Federal Intelligence and Narcotics Special Agent
We also have the knowledge and skill and the training and experience of a retired United States Marine Intelligence Officer and former United States Drug Enforcement Administration (DEA). He was the honor graduate in his DEA class. After graduating, he transferred to a then newly formed, paramilitary, special operations unit known as FAST. The FAST Unit deployed to the country of Afghanistan to assist in investigations against narcotics organizations supplying terrorists with funding. While in Afghanistan, he successfully extradited a top tier heroin drug traffickers and narco-terrorists to the United States for prosecution. Over his career, he participated in other world deployments, wherein he advised foreign nationals on the investigation of narco-traffickers. He has participated in all aspects of narco-trafficking law enforcement, including surveillance operations, wiretap operations, and arrest operations at the state and federal level. He was in charge of macro and micro narco-trafficking investigations, including state, national, and worldwide operations, including coordination with local agencies. After twenty-five distinguished years with the DEA, he finished his career in Tampa, Florida, wherein he retired as a Group Supervisor. He understands how federal, state, and local law enforcement agencies and prosecutors operate nationwide.
Bar and Court Admissions
I am a member of the Bar of the State of Florida (1998) and the Bar of the Commonwealth of Massachusetts (1998). I am also a member of the Bar of the State of Montana (2023).
In addition, I am a member of the Supreme Court of the State of Florida, the Massachusetts
Supreme Judicial Court, the Montana Supreme Court, and I a member or a pro hac vice member of the following federal district courts:
⢠Supreme Court of the United States of America
⢠United States Court of Appeals for the First Circuit
⢠United States Court of Appeals for the Second Circuit
⢠United States Court of Appeals for the Ninth Circuit
⢠United States Court of Appeals for the Eleventh Circuit
⢠United States District Court for the Northern District of Alabama
⢠United States District Court for the Eastern District of Arkansas
⢠United States District Court for the Central District of California
⢠United States District Court for Connecticut
⢠United States District Court for the Southern District of Florida
⢠United States District Court for the Middle District of Florida
⢠United States District Court for the Northern District of Florida
⢠United States District Court for the Southern District of Georgia
⢠United States District Court for the Middle District of Georgia
⢠United States District Court for the Northern District of Georgia
⢠United States District Court for the Southern District of Illinois
⢠United States District Court for the Southern District of Indiana
⢠United States District Court for the Eastern District of Kentucky
⢠United States District Court for Massachusetts
⢠United States District Court for the Eastern District of Michigan
⢠United States District Court for the Western District of Michigan
⢠United States District Court for the Southern District of Mississippi
⢠United States District Court for the Western District of Missouri
⢠United States District Court for Montana
⢠United States District Court for the Southern District of New York
⢠United States District Court for North Dakota
⢠United States District Court for Northern District of Oklahoma
⢠United States District Court for Rhode Island
⢠United States District Court for the Eastern District of Texas
⢠United States District Court for the Western District of Texas
⢠United States District Court for the Northern District of Texas
⢠United States District Court for the Eastern District of Virginia
⢠United States District Court for the Eastern District of Washington
⢠United States District Court for the Western District of Washington
⢠United States District Court for the Southern District of West Virginia
The United States Constitution guarantees every individual the right to a fair trial and the presumption of innocence until proven guilty. This fundamental principle is upheld in federal criminal defense, where Mr. OâBrien works tirelessly to protect the rights of the accused.
The role of a criminal defense attorney is to provide legal representation to individuals charged with federal and state crimes. These crimes can range from drug trafficking and white-collar crimes to terrorism and espionage. The stakes are high, as a conviction can result in lengthy prison sentences, hefty fines, and a criminal record that can follow an individual for the rest of his or her life.
One of the key arguments in favor of hiring O'Brien Hatfield, PA for your federal and state criminal defense is the importance of protecting the rights of the accused. The Constitution guarantees the right to a fair trial, which includes the right to legal representation. Without a skilled attorney, a defendant may not fully understand their rights or the legal process, which can lead to an unfair trial and an unfair result.
Another argument in favor of hiring O'Brien Hatfield, PA is the need to ensure that the government follows due process. The government has vast resources at its disposal, including federal and state law enforcement agencies and prosecutors. A skilled defense attorney will level the playing field by challenging the government's evidence and ensuring that you are treated fairly.
White collar crime is a term used to describe non-violent crimes committed by individuals in positions of power or trust, typically in the business or financial sectors. These crimes can include fraud, embezzlement, insider trading, and money laundering, among others. When accused of such crimes, individuals often seek the white collar criminal defense services of Mr. OâBrien to represent them in federal and state criminal court.
Our role is to protect the rights of his clients and ensure they receive a fair trial. This can involve challenging the evidence presented by the prosecution, negotiating plea deals, and presenting a strong defense case. In many cases, wherein trial is not the best option, we will work to mitigate the potential consequences of a conviction, such as fines, restitution, and most importantly imprisonment.
One of the key arguments in favor of retaining OâBrien Hatfield, PA is that everyone is entitled to a fair trial, regardless of the nature of the crime they are accused of committing. This is a fundamental principle of the American justice system, and it is the responsibility of the defense attorney to ensure that this principle is upheld. Additionally, we can help to prevent wrongful convictions by challenging the evidence presented by the prosecution and presenting a strong defense case with his federal and state criminal defense team.
The lawyers of O'Brien Hatfield, PA are a crucial component of the American justice system. He ensures that the rights of the accused are protected, and that the government follows due process. While the stakes are high, a skilled criminal defense attorney can make a significant difference in the outcome of a federal case.
Mark J. O’Brien, Esquire is a nationally recognized Federal Criminal Defense Attorney with over 25 years’ experience in criminal courts all throughout the country. After beginning his professional career as a Miami, Florida prosecutor in the late 1990’s, Mr. O’Brien organized his own law firm in 2002 based upon the professional lessons he learned to that point in his life with the goal defending those accused of federal crimes with a mix of old school values and new school ideas.
During first decade in private practice from 2002 to 2012, Mr. O’Brien defended individuals and corporations charged with federal crimes throughout federal criminal courts in Florida. From 2012 to the present, Mr. O’Brien has accepted the defense of clients in federal criminal courts throughout the entire country, in addition to his previously established practice in all federal courts in Florida. Case after case, success after success, in federal court after federal court, all throughout the country, has resulted in a growing legacy. To put it simply, Mr. O’Brien wins and, as a result, he is a lawyer in demand.
Mr. O’Brien grew up in New York, attended law school near Philadelphia, Pennsylvania, and started his career in Miami, Florida. There is nothing he has not seen, done, or dealt with in and/or out of a criminal courtroom. New York raised, Philly tough, and Miami tested, Mr. O’Brien brings his 25 years of federal criminal court experience to those accused of federal crimes in federal criminal courts throughout the nation. Mr. O’Brien has the resources, both in his team and in his experience and his training, to tackle your federal criminal case and accomplish the only objective that matters: Win.
Bar Number: 0160210
Florida, 1998
Bar Number: 639865
Massachusetts, 1998
Bar Number: 14114
Montana, 2023
Delaware School of Law
J.D., 1998
Siena College
BA English Literature, 1995
Mark J. O’Brien, Esquire is a nationally recognized Federal Criminal Defense Attorney with over 25 years’ experience in criminal courts all throughout the country. After beginning his professional career as a Miami, Florida prosecutor in the late 1990’s, Mr. O’Brien organized his own law firm in 2002 based upon the professional lessons he learned to that point in his life with the goal defending those accused of federal crimes with a mix of old school values and new school ideas.
During first decade in private practice from 2002 to 2012, Mr. O’Brien defended individuals and corporations charged with federal crimes throughout federal criminal courts in Florida. From 2012 to the present, Mr. O’Brien has accepted the defense of clients in federal criminal courts throughout the entire country, in addition to his previously established practice in all federal courts in Florida. Case after case, success after success, in federal court after federal court, all throughout the country, has resulted in a growing legacy. To put it simply, Mr. O’Brien wins and, as a result, he is a lawyer in demand.
Mr. O’Brien grew up in New York, attended law school near Philadelphia, Pennsylvania, and started his career in Miami, Florida. There is nothing he has not seen, done, or dealt with in and/or out of a criminal courtroom. New York raised, Philly tough, and Miami tested, Mr. O’Brien brings his 25 years of federal criminal court experience to those accused of federal crimes in federal criminal courts throughout the nation. Mr. O’Brien has the resources, both in his team and in his experience and his training, to tackle your federal criminal case and accomplish the only objective that matters: Win.
Bar Number: 0160210
Florida, 1998
Bar Number: 639865
Massachusetts, 1998
Bar Number: 14114
Montana, 2023
Delaware School of Law J.D., 1998
Siena College BA English Literature, 1995
This lawyer is licensed to practice in Florida and has no record of discipline from the Florida bar association. *
* Nolo has confirmed that every member attorney has a valid license and is in good standing with the state agency that licenses lawyers. Any past disbarments and suspensions (with possible exceptions for minor violations or nonpayment of dues, in our discretion) will be indicated accordingly in the badge. Member attorneys are required to notify Nolo immediately if they become the subject of any disciplinary action by any state licensing agency.
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This lawyer is licensed to practice in Florida and has no record of discipline from the Florida bar association. *
* Nolo has confirmed that every member attorney has a valid license and is in good standing with the state agency that licenses lawyers. Any past disbarments and suspensions (with possible exceptions for minor violations or nonpayment of dues, in our discretion) will be indicated accordingly in the badge. Member attorneys are required to notify Nolo immediately if they become the subject of any disciplinary action by any state licensing agency.
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