[ubernostrum]

The courts have ruled many times using content that is in the public domain is fair use, you have no claim to trademark protection

If you take all your legal advice from people who repost whole movies onto youtube and put "no copyright intended" in the description as if it's a magic talisman, maybe.

But in the actual world, if you use someone else's trademark to make money, you're gonna have a bad time, and part of that bad time will be learning in excruciating detail what "public domain" and "fair use" actually mean.

"Something is viewable by the public on the internet" is not "public domain". Public domain means copyright has expired on the material, or that the material was for some reason never protected by copyright (such as certain works of the federal government, in the US). "Fair use" is a defense that can be raised to claims of copyright infringement, and uses a multi-factor test. None of the factors are "but it was there on the internet for me to take".

Neither of these involve trademarks, which are a different area entirely. Using someone else's trademark for your profit is very much not "public domain" and not "fair use", and will not end well.

[dkhenry]

Your correct that in the real world things are different, in fact here are the real world court cases that in my opinion clearly define the activity of the Brave browser as not a copyright violation.

This case was about google getting money while displaying parts of copyrighted material. The court ruled it was fair use. (https://www.documentcloud.org/documents/834877-google-books-...)

This case ( still pending ) was about google being able to display parts of news stories without paying the authors ( the initial ruling was it was legal, but Germany was allowed to impose a "tax", current guidance is that even the tax may not be allowed and Google will be able to display the content ) https://www.nytimes.com/reuters/2018/12/13/technology/13reut...

Since you referenced people who had the same idea as Brave and it was found to be illegal, would you care to reference those specific cases ?

[ubernostrum]

I referenced people who've tried this before and were made to shut down or change tactics before it escalated to a court ruling.

You also keep citing copyright cases. You cited a case where the multi-factor test of fair use was met, without explaining why you think Brave would meet that test.

You have not yet provided evidence of a case ruling that all trademarks are "public domain" free for the "fair use" of anyone for any purpose, and therefore that trademarks provide no protection whatsoever. I await your attempt to do so.