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Law Office of Thomas R. Cox III
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Law Office of Thomas R. Cox III
Thomas Cox

2603 Oak Lawn Ave, Suite 230
Dallas TX 75219
(214) 526-5600

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Law Office of Thomas R. Cox III

Call: 214-526-5600

The Law Offices of Thomas R. Cox III is committed to quality legal service driven by passionate legal defense strategies, and treating criminal defendants with both dignity and respect. Attorney Tom Cox is committed to the principles that everyone is considered innocent until proven guilty. Tom Cox has devoted his legal career to the defense of those charged with criminal offences. Attorney Tom Cox lives out his beliefs through the Law Offices of Thomas R. Cox III.

Former Felony Assistant District Attorney

You want someone who knows the system, the prosecutors, the police, and the judges, from the inside. Someone who can quickly analyze your case, and the people involved, and give you the complete picture. Someone who knows all the options, and how to get results.

Experienced Representation in State and Federal Court

Extensive experience in all kinds of criminal matters in the State and Federal Courts. Former Coordinating Executive Editor, Journal of Criminal Law and Criminology. Former Chairman of Criminal Law Section, Dallas Bar Association.

Call: 214-526-5600

Practice Areas



The War on Drugs and the War on Terrorism have combined to increase the pressure on local, state, and federal law enforcement agencies to step up enforcement of drug laws. From tracking the financing of drug organizations to increased penalties for the possession, sale, and manufacture of illegal substances, people facing even minor drug charges have to contend with significant legal consequences.

Who Would You Want Handling Your Drug Case?

The Law Offices of Thomas R. Cox III is prepared to represent people charged with a wide range of drug offenses, from simple possession to complex drug conspiracies involving the importation of cocaine, heroin, marijuana, ecstasy, Methamphetamine, and other illegal drugs.

As designer drugs become more fashionable, and the manufacture of drugs like ecstasy (MDMA) and methamphetamine (meth) become more common, increasing numbers of people are being arrested and charged with drug offenses. At the Law Offices of Thomas R. Cox III, we have the skill, knowledge, and experience to effectively represent people charged with drug offenses. No drug case is too difficult and no case is treated as routine. Our goal is simple: to win.

Contact Tom Cox if you or someone you know has been charged with a state or federal drug crime.


The penalties for drunk driving are increasingly severe. In fact, the laws have become so harsh that even refusing a blood alcohol test can result in a mandatory driver's license suspension. At The Law Offices of Thomas R. Cox III, we aggressively defend the rights and interests of people charged with a DUI (Driving Under the Influence) or DWI (Driving While Intoxicated).

Who Would You Want Handling Your DWI?

The Law Offices of Thomas R. Cox III can provide all the experience in one exceptionally qualified attorney. Tom Cox has experience both prosecuting and defending DWIs. We understand how the police handle, and mishandle DWI cases, and how the prosecutor's office builds DWI cases.

Tom Cox understands how to challenge field tests and breath tests, how to help people obtain occupational driver's licenses, and how to avoid harsh DWI penalties. It has been said that "a cheap lawyer can be the most expensive lawyer you ever hire". This is especially true of DWI attorneys. Including fines, increased insurance premiums, driver's license surcharges, automobile interlock devices, and legal fees, the impact on earnings a DWI conviction can have on your lifetime earning power can cost upwards of $50,000.00 or more. In addition, it can result in jail time and a permanent criminal record.

Tom Cox quickly begins preparing your DWI defense. Once you receive a notice of suspension there are only fifteen days to request a hearing in order to prevent an administrative license suspension or automatic license revocation. We thoroughly prepare to represent our clients at the suspension hearing. This is only our first step. We examine the in-car video to ensure the officer had probable cause to make the stop and begin field sobriety tests. We determine whether the field sobriety tests, breath tests or blood tests were properly administered. We defend our clients with every strategy, tactic, and ounce of energy at our disposal. Our goal is simple: to win.

Weapon Violations

The Second Amendment guarantees the right to bear arms. However, that right is not absolute. Among the federal government, state governments, and local governments there are over 20,000 existing gun laws in the United States, making it difficult for people to know where or when they might be in violation of the law. At The Law Offices of Thomas R. Cox III, Tom Cox is committed to representing people charged with state and federal weapons charges.

While the number of laws regarding weapons makes it difficult to understand when and where a gun can be carried, weapons violations are serious. A conviction on a weapons charge can put your freedom at risk, prevent you from owning a gun, and can have a significant impact on future employment opportunities.

Many local. state, and federal jurisdictions have laws concerning the possession, carrying, use, sale, manufacture, and the importation of weapons. In addition, even the citizen licensed to carry firearms may be in violation of the law for having- a g- un at an educational institution, on the premises of a polling place on the day of an election, in a courthouse or correctional facility, on the premises of a racetrack, or in a secured area of an airport - sometimes referred to as weapons places prohibited.

Tom Cox has experience representing people charged with state and federal weapons charges. No weapons case is too difficult for Tom Cox, and no case is treated as routine. Our goal is simple: to win.

Sex Offenses

Those accused of sex offenses have been so often demonized by the media and politicians that the public perception is that an allegation is the equivalent of guilt. At The Law Offices of Thomas R. Cox III, Tom Cox recognizes that this is not true. Moreover, we understand that even an allegation can ruin a reputation. Tom Cox is committed to using every resource at his disposal to protect the legal rights, reputation, and the freedom of his clients charged with sex offenses.

"Sex offenses" is an umbrella term used to describe a wide variety of criminal sexual conduct. Sex offenses are much easier to prosecute than they are to prove, because too often people want to believe the victim would not make a false allegation. Cases involving sexual assault, child sexual abuse, and date rape are commonly built on circumstantial evidence, often the police and prosecutors are simply taking the word of the alleged victim over the word of the accused perpetrator.

While recent advances in technology, such as DNA testing, can exclude suspects, it cannot show with 100% certainty that someone is guilty. Tom Cox has experience in handling criminal cases involving sex offenses. Among the crimes a person may be charged with are:

  • Sexual Assault
  • Violations of sex offender registration requirements
  • Public lewdness
  • Child pornography
  • Prostitution
  • Child Abuse
  • Date Rape
  • Rape
  • Fondling
  • Computer sex crimes

The Law Offices of Thomas R. Cox III recognizes that allegations of a sexual offense place the rights, reputation, and freedom of our clients at risk. We use every strategy, tactic, and ounce of energy at our disposal to defend people charged with sex offenses.

Domestic Violence

Allegations of domestic violence are serious. A 91 1 call to the police in relation to a domestic assault almost always results in an arrest; and the prosecutor's office will often pursue a conviction even if the alleged victim recants or doesn't desire to prosecute the case. At The Law Offices of Thomas R. Cox III, Tom Cox is committed to aggressively defend the reputation of people charged with domestic violence.

While domestic violence should never be tolerated, neither should false allegations of domestic abuse. The resulting restraining orders or orders of protection based on false allegations can have significant impact on people's ability to visit their children, on obtaining new employment, as well as on the reputation of the accused.

Tom Cox regularly represents people facing domestic violence charges. Tom Cox recognizes that being arrested for domestic violence, being charged with a domestic assault, and being guilty of family violence are not the same. Tom Cox works closely with his clients to understand their situation and what led to the domestic violence allegations. Then he employs the experience of his office to defend his client's current and future legal interests.


There is no more serious circumstance than being charged with taking the life of another person. Being convicted can result in a loss of your liberty, and, possibly, the loss of your life. The Law Offices of Thomas R. Cox III has handled cases involving capital murder, manslaughter, and intoxicated manslaughter.

Being arrested and charged with murder is not equivalent to being guilty. State and federal law enforcement agencies have tremendous resources at their disposal to investigate murder cases and bring them to trial.

Tom Cox defends his clients with every strategy, tactic, and ounce of energy at his disposal. He is completely committed to ensuring that his client's receive the finest defense available.

Federal Cases

Federal criminal investigations can be significantly different from state criminal investigations. In state investigations, a suspect is often arrested before the case has been thoroughly investigated. There are also often significant differences between state and federal offences in the use of the Grand Jury. When federal prosecutors brings charges, they have often already thoroughly investigated the matter. Agencies involved in federal criminal investigation include:

  • Federal Bureau of Investigation (FBI)
  • Criminal Division of the IRS (CID)
  • Bureau of Alcohol, Tobacco and Firearms (ATF)
  • United States Postal Service (Postal Inspector)
  • Drug Enforcement Administration (DEA)
  • Department of Homeland Security
  • United States Marshals Service
  • United States Secret Service
  • Office of Inspector General - Various Agencies

Criminal investigations do not need to be initiated by a federal agency to be handled by a federal court. Often state investigations involving weapons violations, drug crimes, computer crimes, and white collar crimes such as mortgage fraud, healthcare fraud, tax fraud, conspiracy, banking fraud, securities fraud, bankruptcy fraud, and environmental crimes, end up in the federal courts.

The Law Offices of Thomas R. Cox III is prepared to fairly and aggressively challenge the government at every stage of a criminal prosecution. Tom Cox represent clients before federal grand juries, at trial, and any necessary appeals. Tom Cox recognizes that his clients' reputation, freedom, and in some cases their lives are at risk. He spends countless hours analyzing the facts, interviewing, and preparing witnesses. At trial, the goal is simple: to win.


Felony and misdemeanor criminal offenses involving theft or property crimes can produce a criminal record that will follow people for a lifetime. At Thc Law Offices of Thomas R. Cox III, we have experience representing clients facing misdemeanor theft charges as well as professionals involved in federal embezzlement investigations. Regardless of the severity of the criminal charges, we know that every case is critically important to our clients and that makes it critically important to us.

Theft and property crimes cover a wide array of criminal offenses. The dollar value of the theft or the amount of property damage that occurs is often the determining factor in the prosecutor's decision to charge a suspect with a felony or a misdemeanor. In addition, if a theft or property crime is committed across state lines, federal prosecutors may take over the case, increasing the risks and severity of the possible punishments.

Tom Cox has successfully represented people charged with a wide array of theft and property crimes:

  • Shoplifting
  • Commercial Auto Theft
  • Financial Crimes
  • Burglary
  • Theft
  • Fraud
  • Arson
  • Car Theft
  • Possession of Stolen Property
  • Check cases

Since a conviction, even for a misdemeanor, can follow a person for a lifetime, it is vital to engage the services of an experienced criminal defense lawyer. At The Law Offices of Thomas R. Cox no case is too difficult, and no case is treated as routine. Our goal is simple: to win.

White Collar Crimes

The Law Offices of Thomas R. Cox III has the knowledge to defend businesses and corporate executives dealing with allegations of corporate malfeasance, embezzlement, or fraud. Tom Cox protects our clients' interests at every legal proceeding. We strive to minimize the risks to our client's reputation, their business, and their financial security that can be associated with an indictment for a white collar criminal offense.

Crime Definitions


Assault & Battery

Assault is the threat or attempt to physically harm someone, while battery is the actual act of physical violence. These two crimes often occur together and thus are often charged together.

Domestic Violence

Physical or psychological abuse and/or negligence perpetrated against a member of a household by another usually spouses.

Drunk Driving

Driving while under the influence of alcohol. There are laws prohibiting driving under the influence of other substances.

Drug Offenses

A wide range of crimes dealing with the use, distribution, possession, or command of any controlled substance, or illegally used or distributed prescription medication.


The theft or misappropriation of assets that belong to an employer, company, or governing body, but are entrusted to the person(s) committing the: crime.


The act of or attempt to take assets from another person through intimidation, coercion, or other threats. Actual procurement of the assets is not required for the crime to be considered extortion.


Deceit with the intent of depriving someone of his/her property.

Illegal Possession of Weapons

The unlawful possession of any banned weapon, including various knives, automatic weapons, and others. Can also include the unlawful possession of any weapon at all by a person specifically not allowed to possess one, such as a convicted felon.


The intentional killing of one person by another. In most jurisdictions, any planned murder, or any death occurring during the course of a crime is considered first-degree murder, and all others are considered second-degree murder.


Any lewd or lascivious act perpetrated against a child up to 18 years old, including sexual touching, flashing, rape, pornography, and exposure to sexually explicit materials.

Probation Violations

Any violation of restrictions imposed on a person as a condition of his/her probation.


Forced sexual intercourse against the victims will, usually accomplished by means of duress, menace, violence, or force.

Sex Crimes

Any illegal sexual behavior, including incest, indecent exposure, rape, molestation, sexual assault, sexual abuse, statutory rape, necrophilia, bestiality, and more.


The illegal, non-consensual taking of another persons property. This term is sometimes used as an umbrella term encompassing larceny, burglary, embezzlement, looting, and similar crimes.

Vehicular Manslaughter

Causing the death of a person through the reckless, negligent, or illegal use of a motor vehicle.

How can we help you


When it comes to criminal law cases, an experienced and effective criminal defense attorney can mean the difference between a prison sentence and reduced or dismissed charges. Even in less serious cases, a good criminal defense attorney can make a serious impact on the outcome of the case by ensuring that the rights of the accused are protected throughout the legal process. For these and other reasons, it is vital that those accused of a crime select the most competent, experienced and effective attorney available.

If you or a loved one has been accused of a crime, you need a skilled and proven criminal defense attorney on your side. Please contact The Law Offices of Thomas R. Cox III for a free consultation speak with an expert criminal defense attorney who has extensive experience defending people charged with crimes. We may be able to intervene before charges are even filed. However, if the charges have already been filed, we can employ our vast resources to minimize or eliminate the penalties you face.

We Handle All Types of Criminal Defense Cases

For years, we have been effectively representing clients in federal and state, courts. We routinely handle the cases of those who have been charged with murder, drug offenses, fraud, rape, molestation, sex crimes, weapons charges, theft, vehicular manslaughter, white collar crime, driving under the influence, domestic violence, driving while intoxicated and other criminal charges.

We Can Help You

Our law office is intimately familiar with ali facets of criminal defense and can help you in many ways. If you have been charged with a crime, we can:

  • Work to get the charges against you dropped or lowered
  • interview police, involved parties, and any possible witnesses to expose any lies or exaggerations
  • Make sure that no evidence against you was obtained illegally
  • Conduct a thorough pre-trial investigation
  • Employ a private investigator, ballistics expert, polygraphist, or any other experts that may be able to help strengthen your defense
  • Obtain expert witnesses to testify on your behalf
  • Negotiate with prosecutors to make sure you face the minimum possible penalties

Legal Services

We also are experienced in representing clients in other criminal matters including parole violation hearings, criminal appeals, bail reduction, and expungement.

If you have been accused of a crime, please contact us today for a free consultation with a resourceful criminal defense attorney. We will work tirelessly to ensure the best possible outcome for your case.

Dallas TX Criminal Defense Attorney

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