You need to study all the terms of the contract to which you agreed.

I came up with a quote but it turns out that it's already part of a song. What do I do?

If you can prove you "came up with" the phrase independently, there wouldn't be copyrght infringement. Your calling it a "quote" implies it came...

Those are a lot of questions that depend on specific facts and decisions on what you want to register. Without knowing more, the works seem like...

I make replacement housings for old Nintendo game boys. Are there any issues selling these?

Possible issues? Sure. Practical ones? Depends on the details about what's out there and what Nintendo still has going. A patent going back to...

Can I purchase a soup base starter, add different meats and vegetables. Repackaged it. THEN I RESALE IT?

You will need to comply with Food, Drug and Cosmetic Act standards for quality and labeling laws. There might be exemptions for some things, but...

Not without permission. It would likely be infringing.

Can I paint brands icon and sale it?

A single work of fine art like Andy Warhol's Campbell soup can paintings could have sufficient artistic merit. You might be called upon to explain...

Is it illegal to purchase replica online for personal use?

You are probably using 'replica' as a euphemism for 'counterfeit'. It's illegal to take delivery. Ask your vendor for a refund.

If someone trademarked the styling of a RUNWAY sign in 2019, but the sign has been in use BY FAAsince the 1940's, how can it be?

It's not that simple. First, a trademark is always connected to products. Use as a trademark on different products might not be infringing. It's...

Is it legal, and or necessary to patent or trademark intellectual property for a box subscription e-commerce business?

Patenting and registering trademarks are generally ways to strengthen your business against competitors -- especially copycats. Is it "necessary"?...