What are the legal considerations while launching an educational application?

You didn't suggest any issues to be concerned about here. No one can lay claim to facts. If you are using your own creative expression then you...

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There are many similar works. That does not mean that her work infringed yours. You will need a proper analysis done for that. It seems you are...

A state motto is not necessarily serving as a trademark although it might be. A trademark identifies goods and services in commerce so for example...

No one can lay claim to facts. So long as you are not copying creative expression you should not have any worries. There are of course many...

This sounds like you are creating a derivative work of Disney's. This would be an infringement at least presumably. Getting a license from...

If you intend to invest in this name as a trademark, you need to make sure you clear it probably. Before you invest in any trademark of your...

As noted, likely trademark infringement. If you present a false association, sponsorship, endorsement or other affiliation with them this can be a...

What can I do...?

As noted, we need to see that details and understand the context. If you have concerns, I suggest that you consult with a lawyer in private and...

Most times using images as a small part of a larger collage will be considered sufficiently transformative to obviate copyright issues. I would...

Can I get in trouble or get videos taken down from YouTube if I post videos with Disney merchandise in them?

The context matters for something like this. Doing this for what seems like mostly personal endeavors is different from doing it for mostly...