William John DiPetrillo & Associates, P.A. OVER 20 YEARS EXPERIENCE. A car accident can have a significant impact on your life. An experienced personal injury attorney can save you time and help you secure the best resolution for your automobile accident case. William John DiPetrillo and Associates accepts Personal injury cases on a contingency basis, meaning any attorney’s fees would be paid from settlement funds awarded to the client. Most personal injury attorneys do not go to trial. We can and will go to trial on most matters.