Competent and Diligent Representation. 10. The Texas Disciplinary Rules of Professional Conduct, the Texas Rules of Disciplinary Procedure, the Texas Lawyers Creed, the Code of Ethics for Paralegals.Rule 7.01 Firm Names and Letterhead. The Texas Disciplinary Rules of Professional Conduct. The rules of conduct that all Texas attorneys must follow from the Texas State Bar. A:__Any person who believes that a rule of professional conduct has been violated may file a complaint with the State Bar. Model Rules of Professional Conduct American Bar Association. House of Delegates,Center for Professional.