Many patent infringement litigation cases can be extremely expensive and require significant resources to litigate. Further, many businesses and IP owners who have suffered significant damages from infringement, do not have resources to pay a firm out of pocket for fees and expenses. For this reason, many businesses and IP owners seek a law firm who will work on a contingent contract. In these situations, the law firm often requires no money up front for attorney's fees and only gets paid their fees out of any recovery. Further, in many of these contingent contract arrangements, the law firm also advances the litigation expenses. As each patent infringement case is unique, contigent contracts typically vary depending on several factors. In fact, many patent litigation firms do not offer contingent contracts and only accept cases where the client pays a retainer including all billed fees and all expenses.