CaseFileXpress, LP (CFX) is the first approved Electronic Filing Service Provider (EFSP) for Texas State Courts and Washington, D.C. Superior Courts. CFX has designed a secure, efficient, electronic pathway for legal professionals to use (eFiling), which creates substantial savings and increases bottom line firm profitability. It also provides for better control of your most valuable asset - professional time. All you need is a case file document and an Internet connection. eFile from anywhere, anytime.