A work that is not subject to copyright protection would be in the public domain. Examples are works of the federal government (such as NASA imagery) or works for which protection has expired.
Once copyright protection has expired, a work enters the public domain, where it can be freely used and adapted.
Simple words are not subject to copyright. Perhaps you mean "trademark"? Also, you don't "apply for a copyright" for anything; copyright is automatic, at least in the USA and any of the other 160 countries that follow the Berne Convention.
It basically means "we don't know/care who the copyright holder is so use it at your own risk". And no, that disclaimer does not exempt someone from prosecution for infringement.
it means copyright it's the symbol for copyright
Thorvald Solberg has written: 'Copyright bibliography' -- subject(s): Bibliography, Copyright 'Foreign Copyright Laws: A List of the Foreign Copyright Laws Now in Force ..' 'The present international copyright situation' -- subject(s): Bern copyright convention (1886), Copyright, International Copyright, Revisions, 1928, Berne Convention for the Protection of Literary and Artistic Works 'Copyright in Congress, 1789-1904'
Neil Boorstyn has written: 'Copyright Law With Copyright Law Cumulative Supplement' 'Boorstyn on copyright' -- subject(s): Copyright
Laura N. Gasaway has written: 'Get copyright right' -- subject(s): Copyright, Copyright and electronic data processing, Fair use (Copyright), United States 'Legal protection for computer programs' -- subject(s): Copyright, Computer programs
Information itself is not subject to copyright. Only a creative work of authorship is protected by copyright.
Materials on the internet are protected by copyright, just as their analog counterparts.
J. H. Spoor has written: 'Copies in Copyright (Monographs on Industrial Property & Copyright Law)' 'Scripta manent' -- subject(s): Reproduction of money, documents, Law and legislation, Copyright 'Copies in copyright' -- subject(s): Photocopying, Fair use (Copyright)
Libby Baulch has written: 'Copyright rights' -- subject(s): Copyright and electronic data processing, Copyright
"Copyright obtained" is an unnecessarily wordy way of saying the material is protected by copyright.
copyright symbol is c with circle ©