Can I show pictures of some of these ads in my book

You received some good insights. Using the material as you suggest is very likely going to be in the realm of fair use because you are using it...

If you are not counterfeiting the trademark holders here, meaning representing the products as if they were made by these other entities nor using...

Is it possible for me to contact trademark owner and ask for a license and then contact customs to retrieve my order?

People who have had product seized from CBP work out deals all the time with mark holders. In fact I have a friend and colleague right in L.A. that...

Am I infringing on other companies even though Im the first to Trademark the name?

You received very good responses so far. To chime in, you simply cannot receive trademark clearance advice like this over a free and public Q&A...

Can a publisher publish a new book series using the same title as an other book already published by somebody else?

Well it depends, but most likely yes and that is because titles to single creative works like books, songs, albums, etc. are not afforded any...

Writing book about a local TV show. Do I need permission from the station to use screen grabs from YouTube videos from the show?

If you do this the right way, it should fall cleanly in the context of fair use because you would be commenting directly on that footage much like...

Am I legally obligated to hand over ALL source code to a project that contains previously made code classes?

As my colleagues note, this all depends on the specifics involved. Is there a written agreement that outlines what is to be transferred? if not,...

The short answer is of course yes. The bigger answer is whether the context exposes you to any claims from his estate. Using real publically known...

How much would i need to alter in the image or merge with another image so it wouldn't be considered copyright infringement?

The likelihood that anything you will find online today is safely in the public domain is slim to none. Possible, but far from likely. There are...

How can I use a professional athlete on a custom t-shirt to sell at my clothing line?

This is clearly a publicity and privacy rights issue. You cannot use the name, image or likeness especially of a famous person without their...