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Law Offices of Heather J. Mattes
Fighting For Pennsylvania Clients For Over 30 Years

Experienced West Chester Criminal Defense Attorney And Former Prosecutor


Attorney Heather J. Mattes defends the rights of clients in West Chester, Pennsylvania, and the Greater Philadelphia area. With more than 30 years of experience, she is a tough, smart litigator who represents clients facing investigation or arrest in a broad spectrum of crimes. This includes white collar crime, grand jury investigations, domestic assault, sex offense and child pornography cases, drug charges, and DUI/drunk driving charges. Her background as a former prosecutor gives her the ability to effectively anticipate and combat the opposition's tactics.

If you are charged with credit card or insurance fraud, accused of domestic assault or subject to an illegal search, the Law Offices of Heather J. Mattes is ready to take your case and get results. Under Pennsylvania law, she also provides post-conviction relief services. When you are facing investigation, arrest and conviction, Heather J. Mattes is the attorney you can trust throughout the entire criminal process.

The Kinds Of Representation We Provide

The Law Offices of Heather J. Mattes represents clients in criminal defense cases in federal and state court. This includes:

  • White collar crimes — Mail fraud, misappropriation of assets, identity theft and more
  • Grand jury investigations — Diligent legal representation in both state and federal grand jury investigations. Heather J. Mattes ensures that clients' rights are protected and that they avoid potential criminal liability.
  • Domestic assault — Simple assault, aggravated assault, child abuse, reckless endangerment and more
  • DUI and drunk driving — Advising clients on defense strategies such as sobriety test administration weaknesses, probable cause and Breathalyzer maintenance flaws
  • Drug charges — Including illegal search and seizure
  • Violent crimes and homicide — Aggravated assault, homicide, murder, kidnapping, internet crimes against children (ICAC) and domestic assault
  • Appellate representation — Fighting for you until there is a final resolution of your case
  • Expungements and record sealing — Striving to prevent damage to your reputation by keeping information regarding your arrest out of the public eye

Get Started On Your Criminal Defense Today

When representing you, Heather J. Mattes provides compassionate representation and never gives up on your case. As an experienced attorney, she can evaluate the facts and circumstances of your case and give you a frank assessment regarding the potential criminal liability you face, as well as the personal consequences that follow an arrest.

Attorney Heather J. Mattes is prepared to put her experience and skills to work for you. When necessary, she can provide counseling referrals to ensure that all of your needs are met. If you are facing a criminal charge, call the Law Offices of Heather J. Mattes at 877-241-9445 or contact her online for a free initial consultation on the facts of your case and to ensure that your rights are protected.


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