Every case is different. Some cases are quickly settled over the course of a few months, while others can take over a year, especially if litigation is involved. Cases tend to settle quicker if there is strong evidence pointing to one party being at fault. If there is a disagreement either about which party was at fault, or to what amount the victim is entitled, then the length of a case will increase.
A large part of our Los Angeles Personal Injury Attorneys job representing our clients is making sure that the insurance companies do not pay out less than the specific accident calls for. We fight for our clients to get them a higher settlement, and are not afraid to litigate a case, so in certain situations a case can go on longer than initially anticipated.