Two things that can not be copyrighted?

Answer 1

Copyright does not protect names, titles, common words/phrases, facts, ideas, discoveries, systems, or methods of operation. It may, however, protect the way these things are expressed provided they meet the necessary criteria for copyright registration.

Answer 2

* Works that have not been fixed in a tangible form of expression. For example, you can not copyright choreographic works that have not been notated or recorded, or improvisational speeches or performances that have not been written or recorded. * Titles, names, short phrases, and slogans; familiar symbols or designs; mere variations of typographic ornamentation, lettering, or coloring; mere listings of ingredients or contents. * Ideas, procedures, methods, systems, processes, concepts, principles, discoveries, or devices, as distinguished from a description, explanation, or illustration. * Works consisting entirely of information that is common property and containing no original authorship (for example: standard calendars, height and weight charts, tape measures and rulers, and lists or tables.

Answer 3

Common knowledge, simple facts, and government works do not qualify for copyright protection. In addition, ideas (rather than their expression) and patentable inventions do not qualify.

Answer 4

Anything in the public domain is not protected by copyright. Material licensed under creative commons also may not be subject to copyright, depending on the specific license type.