Copyright protects advertising and sales text. For most companies, however, trademark is a larger issue, as it protects corporate image by protecting the use of logos, slogans, and trade dress.
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Ideas cannot be protected by copyright. If your idea is a new process, you may wish to seek patent protection for it.
Yes; logos and slogans are also protected by trademark law.
Not necessarily, but if you are using a nickname or pseudonym for publishing, it would be worthwhile to note that in the copyright registration.
Using the Snoopy graphic in advertising may require obtaining proper licensing and permission from the copyright owner, which is typically the company or individual who owns the Peanuts brand. It's important to check with the appropriate licensing authority or legal counsel to ensure compliance with copyright laws before using the Snoopy graphic in advertising.
Since names, titles, and common words/phrases are not eligible for copyright protection an advertising slogan could only be registered as a trademark.
Copyright protects every print ad, jingle, and commercial you see. But the fair use provision in the law has been determined to allow some rather surprising things: one case found that using car manufacturer logos in an ad for an auto service station ("we specialize in...") was fair use.
The copyright holder, or anyone the copyright holder authorizes.
Very quietly and without advertising it, or your intentions of doing it, on a public message board. You do know that is against the law and you can be arrested for copyright infringement, right?
Names (including nicknames), titles, slogans, and common words/phrases do not qualify for copyright protection. In some cases, however, they can be registered as trademarks.
Use the latest copyright date.