Free Consultation
$0 first 120 minutes
also known as Heather J. Mattes, Heather Mattes
Heather J. Mattes is an experienced criminal lawyer. She was born in Philadelphia, Pennsylvania and has lived and practiced here throughout her career. Ms. Mattes grew up in Delaware County where she attended public school and participated in the music program graduating as a national honor society member. In 2003, she was inducted into Sun Valley’s “Wall of Fame.”
Ms. Mattes attended The Pennsylvania State University where she graduated Summa Cum Laude with a degree in Communications Studies emphasizing ethics and philosophy. She graduated from the Villanova University School of Law and began her early practice as an Assistant Public Defender in West Chester, Pennsylvania for three years defending indigent clients at all levels of prosecution and in the state appellate courts.
For sixteen years, Ms. Mattes was an Assistant District Attorney in Delaware County, Pennsylvania where she tried misdemeanor and felony cases from driving under the influence to capital homicide as well as sexual assault and other special victim matters. She mentored and supervised other attorneys during her tenure.
Since 2005, Ms. Mattes has limited her practice to criminal defense in the state and federal courts. She is a member of the federal Criminal Justice Panel, the Pennsylvania Bar Association as well as the National Criminal Defense Lawyers. Ms. Mattes was a member of the Board of Pennsylvania Criminal Defense Lawyers for six years and remains active with the organization. She received commendations in 2014 and 2016 for her work with PACDL. In 2019 and 2020, Heather was the President of the Delaware County Chapter of PACDL.
1
Practice Area
42 years
Free Consultation
$0 first 120 minutes
Quickly connect with top attorneys through our legal directory to get help with your legal issue.
Chat with a live agent who can match you with the right attorney for your legal needs.
Chat withState: Pennsylvania
Acquired: 1984
No misconduct found
105 South High Street, Suite 2A, West Chester, PA, 19382
12 Client Reviews
Showing 1 - 5 of 12 reviews
Posted by Maria | October 09, 2025 | Criminal Defense
Beware read contract!!! She changes to "FLAT FEE after verbally saying RETAINER" IMO, HER REAL CAREER IS TAKING THE EASY WAY OUT
*HEATHER MATES. IN MY OPINION. HAS NO HONOR, INTEGRITY OR DO DILIGENCE TO HER JUDICIARY RESPONSIBLITIES as a criminal attorney. I could write a book on how much she butchered up my case but I'm just going to give you some bullet points. * I had a win-win case. The judge said in so many words that i...
Posted by anonymous | February 22, 2024 | Hired Attorney | Criminal Defense
Highly recommend!
Heather is a committed criminal defense attorney with extensive expertise in her field. She possesses a wide range of experience both in criminal defense and prosecution, utilizing her experience to secure optimal results for her clients' cases. Heather consistently demonstrated thoroughness, prepare...
Posted by anonymous | October 30, 2020 | Hired Attorney | Lawsuits & Disputes
Heather Jo Mattes is the best lawyer in PA
Dedicated, hardworking, driven and worth every penny. Professor Heather Jo Mattes dives into your case and does everything in her power to fight for your rights. Professor Heather Jo Mattes is very well at conversing and negotiation for any circumstance. Highly recommend 100%. It is very rare to find...
Posted by anonymous | January 06, 2019 | Hired Attorney
Highly recommend Heather Mattes
I cannot say enough good things about working with Heather. My family engaged her for an emergency situation over Christmas week and she put her everything into our case. She was compassionate, thorough, straightforward and no-nonsense. She was responsive at all hours of the day and night - via email...
Posted by Gloria | December 19, 2017 | Hired Attorney | Criminal Defense
Extremely Dissappointed
Although Heather is a nice person to talk to, I am very disappointed in the way that she handled the little bit of work, (if you want to call it that) and then keep my money . Yes it is true that her contract reads that your retainer is non-refundable and I signed the contract without really readin...
All services in this case were fully discussed prior to providing a written fee agreement and fulfilled when retained. Ethical attorneys employ written fee agreements and encourage potential clients to review them before signing. The Law Offices of Heather J. Mattes charged a minimal retainer in this matter. Ms. Mattes performed services for which she was retained and additional work to assist the client including successfully contacting prison authorities, clarifying issues related to the client's status and communicating in detail with the reviewer. Professional, superior service are always aspects of this office's representation.
"I'm a lawyer and if I got into trouble, I would hire her. I have known Heather for many years. She is the kind of lawyer that loves her job and takes pride in fighting for justice. She will stand by your side and know the law better than anyone else in the courtroom. In my opinion, she is one of the most talented and compassionate lawyers in the Commonwealth of Pennsylvania."
"Heather is a professional, competent and diligent attorney who is well known in Chester County. Highly recommended"
"I've known Heather Mattes to be a very well-prepared, knowledgeable and caring lawyer. She takes pride in doing good work. I highly recommend her!"
Criminal defense lawyer
Criminal defense lawyer
2016
President's and Directors' Commendation, Pennsylvania Criminal Defense Association
2004
Annual Award, Bikers Against Child abuse
2006 - Present
Adjunct Professor, Drexel University College of Medicine
2006 - Present
Principal, Law Offices of Heather J. Mattes
1989 - 2005
Assistant District Attorney, Delaware County District Attorney's Office
1985 - 1988
Assistant Public Defender, Chester County Public Defender's Office
2012 - Present
National Association of Criminal Defense Lawyers
2010 - Present
Homeowner's AssociationSecretary
2010 - Present
Delaware County Bar Association
2006 - Present
Pennsylvania Bar Association
2006 - Present
Chester County Bar Association
2019 - 2021
Delaware County Association of Criminal Defense LaPresident
2012 - 2020
Pennsylvania Association of Criminal Defense LawyersBoard of Directors
2010 - 2021
American Bar Association
1984
JD - Juris Doctor
1981
Bachelor of Arts
2015
Women In The Law
2016
English
Legal Answers