I want to compile some quotes from modern authors.

It would be best done with permission. The problem is that while short phrases are generally uncopyrightable, quotes are often part of a more...

Retain a patent lawyer to provide a confidential opinion based on the drawings or prototype for your product. You should probably also assume that...

Can I sue a dealership who is posting a car on Facebook market place for 500$ or free?

You can sue if you suffered financial injury. It sounds like that would be hard to prove.

Can I sell an APP - or subscriptions to it - that allows other people to Transform Data which is Published by a third party?

That's a sufficiently detailed set of facts that you should get a confidential opinion that analyzes all of them. Copying could violate copyright...

Can we trademark "Unreal Deli" or "Unreal Corned Beef" or even "Mrs. Goldfarb's Unreal Corned Beef"?

If you want a legal opinion based on actual facts you should retain a lawyer. Avvo is only to provide general direction to assist people, not free...

Can a company use my copyright image on their website without permission?

If done without permission it sounds like copyright infringement. Check the terms and conditions on the site to which you posted -- maybe you...

When it comes to a design patent does the context of what the product is matter?

The answer above is a good one. Context does matter, but that's from the perspective of where a person of ordinary skill would look for prior art....

Can an architect post a map of homes (with address and picture) they have done to their website without permission?

Maybe if it's not public information. With building permits and property tax records much of the information may be public. Recent architectural...

Can I sue Facebook for copyright and trade mark of my name?

You should retain a trademark lawyer. It is hard to imagine what a "legal notarized copyright license on my brand name" is. Trademarks need to be...

I am selling replica Fragrance Oil from popular designer perfumes online.

The above answer is right. You risk a trademark infringement case and should retain a lawyer. Usually an "inspired by" claim is hoped to be a...