The methods and mechanics of the legal process. these include filing complaints, answers and demurrers; serving documents on the opposition; setting hearings, depositions, motions, petitions, interrogatories; preparing orders; giving notice to the other parties; conduct of trials; and all the rules and laws governing that process. every state has a set of procedural statutes (often called the codes of civil procedure and criminal procedure), and courts have so-called “local rules,” which govern times for filing documents, conduct of the courts and other technicalities. law practice before the federal courts operates under the federal rules of civil procedure and the federal rules of criminal procedure. procedural law is distinguished from “substantive” law, which involves the statutes and legal precedents upon which cases are tried and judgments made.