texas law does not restrict who can form or have an ownership interest in a business entity, other than requiring the organizer to be a person capable of entering into a contract. a limited liability partnership (llp) is either a pre-existing general partnership or a pre-existing limited partnership (lp) that takes the additional and entirely optional step of registering with the secretary of state as an llp. filing a certificate of formation with the secretary of state creates a for-profit corporation, professional corporation, close corporation, nonprofit corporation, llc or limited partnership. a member of an llc is a person that holds an ownership or membership interest in the llc. filing a certificate of formation only prevents the secretary of state from filing a subsequent certificate of formation for an entity with a name that the secretary of state determines is not distinguishable in the records. texas law does not require a business to have a seal; therefore the secretary of state does not have information or regulations on how to design a seal or where to obtain one. form 205 (word, pdf) can be used to create a general purpose llc, but it is not designed to create an llc with a nonprofit purpose, and it is not designed to satisfy any requirements that the irs or texas comptroller might impose for tax-exemption.