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• The ideas themselves, the formulas, solutions, concepts, methods, systems, principles, discoveries, processes and inventions of any kind;
• The industrial or commercial use of the ideas contained in the works;
• The schemes, plans or rules to carry out mental acts, games or businesses;
• Isolated letters, digits or colors;
• The names and titles or isolated phrases;
• Simple formats or blank forms to be filled out with any type of information, as well as its instructions;
• Reproductions or imitations, without authorization, of shields, flags or emblems of any country, State, municipality or equivalent political-administrative division, nor the denominations, rules, symbols, acronyms or emblems of organizations international, governmental, non-governmental or any other organization officially recognized, as well as their verbal designation;
• The informative content of the news; and
• Information in common use such as sayings, sayings, legends, facts, calendars and metric scales

Additionally, Article 49 of Law 33-98 affirms that any work by the state that has not been in use within five years of its original publication shall be in the public domain. The full quote in English reads as follows: "ARTICLE 49. The State or its public entities, municipalities, as well as universities and other educational establishments in the country, shall enjoy the protection established by law, but, where they are declared heirs of copyright and have not made use thereof within five years from the respective declaration, the work shall the public domain."