Mimicking High-End Brands is Legal?

Sounds like it could be trademark infringement. Happens all the time.

Are there standard restrictions when advertising trademarked names or images or is it different for each particular product?

You can't use their logos or trade dress without permission. You can use their name descriptively in text to refer to them. For example, "all our...

This is not a fair use scenario. You need a license to record the covers called a mechanical license (see Harry Fox Agency online) and perhaps...

Is it legal to issue and sell a souvenir passport in USA, with the wording "Trump Republic Passport"

The issue is likely going to be publicity and privacy rights which come up when you use the name, image or likeness of someone (especially a famous...

Does a "corrected" edition of a book erase plagiarism and source fabrication?

Just to avoid any unnecessary confusion, the term "plagiarism" is only relevant in the academic realm. What happens as between this other author's...

Your scenario engenders more questions than answers at this point. For example, where is this business operating from and is it within the scope of...

What kind of contract should my developer sign?

Yes, usually what is created is an independent contractor agreement that covers things such as: work-for-hire/assignment, indemnifications,...

I'm not sure if this is relevant, but the copyright law specifically carves out an exemption for use of copyright protected material within the...

Property Release request

It is always best to get a release, but whether one is actually required is another question. I understand that you purchased the photo, but does...

Can I publish for profit a table book of quotes I took from the internet?

Using quotes will generally be permitted. This is largely because using what amounts to a very small portion of a much larger body of work will not...