A Registered Agent is necessary to receive service of process on law suits. Many businesses have a Louisiana Registered Agent because the business is a Louisiana company or the business has registered with the Louisiana Secretary of State's Office. If a business does not have a Louisiana Registered Agent, the Secretary of State is designated as the agent for service of process on suits involving all foreign corporations not registered with the Secretary of State. The Secretary of State is designated as the agent for service of process on suits involving domestic corporations after a diligent effort but unsuccessful attempt has been made to serve the corporation.