Real estate or copyright photograph attorney questions ?

It's hard to see a clear cause of action. You took the photos, so you are the author and own the copyright. In theory there could be misleading...

You can use ideas but not copyrighted expression. Early in video games there was a case of Pac Man v. KC Munchkin. You should retain a copyright...

It's too late for a patent. You inly have one year from the first sale. Trademark advice is best from a trademark lawyer where you can get...

It's best to work it out now when they want the file. It may be important how the vector file was created. I'd say that when I draw a CAD file...

What happens if I sell my designs on my website?

Assuming we are only talking about images -- not, for example, images of something covered by design patent or trademark -- you should save your...

Can I trademark a 3 word phrase for t-shirts where the first letter of each word spells out a known trademark name

A backronym could be infringing if it causes a likelihood of confusion.

Is it necessary to contact or obtain permission from a manufacturer before selling their products on my site?

Your thorough disclaimer might be enough, but if you're drop shipping, you don't have a first sale - trademark exhaustion defense. And there...

In the US, selling replicas of landmarks such as you describe, if derived from public domain sources, like an historical landmark itself, is...

Can I legally use my own original artwork on tee shirts, etc and sell them, if the artwork is of a celebrity’s face?

Celebrities have a right of publicity and unless you draw from the live person you are likely copying from a photo and infringing copyright.

What good is a patent, when apple has several patents on a phone, yet there are several phone's just like theirs?

You're confusing generic ideas with what is really "covered" by a patent. Putting aside design patents -- which cover the ornamental appearance of...