Can I sell light up cases if they do not have the original company's logo?

Maybe. As noted, the logo is a trademark issue. Even if you do not use their logos or trademarks the product you sell might be infringe their...

"how can I know if an idea has been copywriten or not? something inspired me but I want to know if I can use the idea or not.

Ideas are not protectable like inventions for example. What is protectable is the way in which ideas are expressed (literary work, sound recording,...

I will like to make a tv serires of animation but I'm scared if other studios have reason to belive it's a copyright ?

If your work was original then you probably have little to worry about. The test under a copyright infringement analysis is called "substantial...

Need Advice about Podcasting and Intellectual Properties of said Podcasts

Your situation requires a proper analysis. You have likely garnered rights to the name under common law being the first to use it within the scope...

Is this true? Can someone copyright a phrase? Granted it is their name, but that is not why I am using it.

So as others notes, we are in the realm of trademark here not copyright. The only way to address this specific situation is to properly analyze the...

Should I cease & desist?

This kind of scenario begs for a proper analysis. If you were using your name first then you have already acquired rights under common law. These...

As noted, your understanding of fair use is not quite accurate so your question I think is not really relevant to copyright law. If someone uses Go...

Which copyright form should I file?

If you have concerns about how to file it, I would get some help. Hiring someone to handle one copyright filing will not be an expensive affair....

What steps should I take to protect myself when selling merchandise inspired by intellectual properties - especially Disney?

Being the world's largest IP rights holder, Disney is of course aggressive when it comes to policing their properties. I did take a look at the...

I got A question about Trademarks and/or Copyrights.

What you are describing is not really trademark use because these sayings you plan to place on shirts are not being used to identify your products...