Once you know the name you want is available, you can file the appropriate forms for your business structure with the CA Secretary of State. Corporation. If your business structure is a partnership, corporation, or limited liability (LLC), you must register or incorporate with the California Secretary of State.24-hour rush service available. Persons doing business for profit under a fictitious name (does not include surname in company name). The CT-1 Form and Instructions are available online. The corporation's articles of incorporation and bylaws should be included in the initial filing. This form is designed to assist nonprofit organizations that have chosen to incorporate in California and the pro bono attorneys who represent them.