Do I have to relinquish my app designs to a customer if they didn't pay me?

Dariush addressed the central issue, which is whether the contract you signed (not the NDA but the agreement to build the app) addresses the...

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I agree with the other attorneys on this matter. Although, it's not entirely clear from you question whether your intent is to copy verbatim the KK...

I agree with the other attorneys on this matter. My only addition is that in the TM applications that I do for software clients, a valid screen...

Is it permissible for a mobile app to scan pages of a book under the following circumstances?

See Authors Guild v. Google. While this suit was settled, the issue was whether Google had the right to scan books protected under copyright law...

What is the best way to place quote from lyrics from a song on a t-shirt? What if the lyric/quote was note verbatin and altered

As discussed by prior attorneys, your use is commercial in nature and arguably a direct copyright infringement. Even if it wasn't, the music...

Business dealing with software developer trying to charge for project that was never completed + breached contract

Your software development contract will most likely detail the specific remedies you can pursue in the event of a breach. That said, you need to...

Does placing a copyright mark for myself on a 500 years old unclaimed historical document becomes my legal property?

US Copyright law protects works of original authorship. From what you've described you are simply reprinting/publishing a document that is already...

In California (and most other states) there is a personal right of publicity that may apply, depending on the use of your image. While the...

My Google play app has received warning for Impersonation and/or intellectual property violation.

There could be several issues here, and you'd need to provide more information regarding the specific message that you received from Google. ...

Can I pursue a business idea that was originally discussed with a party already developing a similar idea?

Under copyright law, ideas are not protectable. Trade secret law does allow certain "ideas" to be protected, but a basic understanding of both...