Pennsylvania 19. Notice to Defend is a legal document which is filed by a defendant in a civil case in the state of Pennsylvania. It is a formal notice that the defendant has been served with a complaint, and they must respond to the allegations in the complaint. The Notice to Defend is a formal notification of the commencement of a lawsuit and informs the defendant of their rights and obligations under Pennsylvania law. There are two types of Pennsylvania 19. Notice to Defend: (1) Motion to Dismiss, and (2) Answer. The Motion to Dismiss is filed by the defendant in order to have the case dismissed, while the Answer is filed by the defendant in order to respond to the allegations made in the complaint.