Do I have to pay for a retroactive license?

Of course you have to pay. This is clear copyright infringement.

If I have an idea for an invention. What must I do to protect that idea? And how do I go about marketing my idea? If given..

This is a common and legitimate question. It is also a crazy question. How do I protect an invention. My friend---our intellectual property laws...

How can I determine whether or not the subject of my photograph is due "joint-authorship" credit in my photo of him?

I do not think this is a hard question. You worked with a friend to create a photograph. You and your friend do not get along so you want to cut...

I am a sole proprietor with a registered DBA company name. Can I use a brand name different from that under my sole prop DBA?

Please don't take offense. But you need a lawyer. "How does that work?" Branding involves complex issues of IP law, corporate law, and many...

Intellectual property, is it ok to sell a handmade copy if a person does not want to buy from the original source?

It is helpful to see the actual piece. I believe that piece could be sufficiently original to have valid copyright protection. Thus, if you go...

Competitor Domain name confusingly similar to my Registered Trademark

I agree that an ACPA action would be a good approach. But the key issue here is whether the First Use In Commerce of your competitor occurred...

Since when do you have to provide proof of pending lawsuit to get your intellectual property removed from someone's webpage?

It seems that you are upset with Facebook because it refuses to permanently disable an account of someone you accuse of copyright infringement, ...

What is considered Intellectual Property online, and what are your rights?

If I am not mistaken, I recently answered another question that you posted. You seem to be operating a web-site without understanding the "basics"...

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What disclaimer should I use for this situation?

I am worried that you have a misconception about disclaimers. Posting a disclaimer, even if it is clear and well-written, will not help you very...

I wanted to use an image from a movie with quotes that i said on a t shirt for personal use is that legal?

The answer is--it depends. And whether it is legal or not may be irrelevant--that is an academic question that is probably not very important to...