Texas Application for Renewal of Registration of an Entity Name is a form issued by the Texas Secretary of State that allows an entity to renew its name registration with the State of Texas. The form must be completed and filed with the Texas Secretary of State in order to continue doing business under the entity's registered name. The Texas Application for Renewal of Registration of an Entity Name is available in two different forms depending on the type of entity. The form for a For-profit entity is Form 503 and the form for a Non-profit entity is Form 503-NP. The form must include the legal name of the entity, type of entity, the Texas filing number, and the entity's address. It must also include the name and signature of the entity's authorized representative. Once the application is completed and filed, the Texas Secretary of State will process the application and issue a confirmation of the name registration renewal. The renewal is valid for two years from the date of filing.