Oklahoma (Form 5005-1(C)(1)) Electronic Case Filing System Registration is an online registration system for filing court cases in the state of Oklahoma. The system is used to register attorneys, law firms, and other individuals and entities with the Oklahoma court system. It also provides access to the Oklahoma Supreme Court network, allowing users to file court documents electronically. There are three types of Oklahoma (Form 5005-1(C)(1)) Electronic Case Filing System Registration: Individual Attorney Registration, Law Firm Registration, and Non-Attorney/Entity Registration. All registrations are completed online through the Oklahoma Supreme Court Network (OCN).