Powerful Advocacy That Gets Results

Experienced Criminal Defense Attorney and Former Prosecutor in Pennsylvania

Heather J. Mattes is a Pennsylvania criminal defense lawyer providing representation for a wide variety of criminal charges in both state and federal court.

CRIMINAL LAW

criminal
Defending the rights of individuals facing criminal charges across Pennsylvania

DOMESTIC ASSAULT

domestic assault
Protecting your rights when facing domestic assault charges

DUI/DWI

DUI/DWI
Helping minimize the consequences of a DUI/drunk driving arrest

Representing Clients Across Southeastern Pennsylvania

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

Heather G. Mattes 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.

Heather J. Mattes, Avvo Rating Superb Top Attorney Criminal Defense
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PACDL
BBB

Exceptional juvenile justice attorney

Heather is very honest, intelligent, straightforward, caring and knowledgeable. My son was involved in multiple systems and Heather has exceptional talent in dealing with mental health/special education and criminal justice. I met her years ago on a professional level, and when my son got into trouble, she was the first person who came to mind....

— CK

hreview
2019-04-03T11:07:48-04:00

— CK

Heather is very honest, intelligent, straightforward, caring and knowledgeable. My son was involved in multiple systems and Heather has exceptional talent in dealing with mental health/special education and criminal justice. I met her years ago on a professional level, and when my son got into trouble, she was the first person who came to mind. She is fabulous!

Complete faith in Heather

Heather’s experience shines through in a courtroom. She seems to know everyone there and what their role is. At times seemed to direct them a bit when they seemed a little confused or in need of help. Even seemed to know their job better than they did (she likely had been in their role in...

— JB

hreview
2019-04-03T11:07:01-04:00

— JB

Heather’s experience shines through in a courtroom. She seems to know everyone there and what their role is. At times seemed to direct them a bit when they seemed a little confused or in need of help. Even seemed to know their job better than they did (she likely had been in their role in the past). She knew every step before it happened. Her preparation was right on. She works very hard, thinks fast and gets results. If she doesn’t get the results she wants the first time, she will not give up until she does. I have no idea how, but she does get unbelievable results. She is smart, sharp as a tack and tough as nails. On top of it, I truly feel she is a really good person who will do the right thing and really fight for you … and win. Things were not going well for me and I was temporarily in a bad way due to certain circumstances in my life. It seemed I wasn’t going to get any breaks from the courts. Heather worked hard and got me the break I needed to pull my life together and headed in a much better direction. She has no idea what a difference she has made in my life. Even when I told her, she was very, very modest about it (well, she is very professional and maybe she was just being her professional self). I am very grateful for what she has done for me and fortunate that she was referred to me. She is truly an amazing attorney. There would never be a reason to contact any other lawyer. Obviously, I would recommend her to anyone who needs results. Thank you, Heather!

Excellent criminal defense attorney

Heather is very thorough and always honest about possible outcomes. I would use her again if needed.

— a criminal defense client

hreview
2019-04-03T11:06:16-04:00

— a criminal defense client

Heather is very thorough and always honest about possible outcomes. I would use her again if needed.

See what our clients
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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 610-431-7900 or contact her online for a free initial consultation on the facts of your case and to ensure that your rights are protected.