Medical malpractice suits all have statutes of limitations, i.e. time limits upon which you can file a a medical malpractice lawsuit. The timeframe to file is determined by your state, and many states have reduced the timeframe to make it more difficult to delay a legitimate filing. Some states have even required mandatory arbitration before a lawsuit for medical malpractice can begin. The limit, which is generally two to three years in most states, begins on the day you are injured, or at least on the day you discovered your injury.