Legally, am I responsible for repaying back the money?

If you clearly were not entitled to the money, than you will need to pay it back.

It is highly unlikely that Snapple owns a patent for placing facts on bottle caps. You could have a patent search done to determine that, however.

Patent/Trademark: Feasibility /filing for a patent on a SaaS (software as a service) technology product for improving eCommerce

Although software inventions have become more difficult to protect, they are still patentable. Your invention sounds like it might meet the...

You could have a situation where you will never have a problem, or a serious infringement issue could arise. You need to have a trademark attorney...

Logo usage

You have to be very careful with this. You have to clear exactly what you are doing with a trademark attorney.

Can a client file a trademark registration for a logo design without a transfer of copyright?

You can file a trademark application for the logo design without transfer of the copyright. The issue of ownership of the copyright will almost...

Ownership of Inventions by an university professor

Chances are that the facts as you state them would allow for you to retain ownership of the invention. However, you will need to review your...

How can I get a copy of my discovery from an old case

Your previous attorney may have it, and it is possible the court may still have copies of it.

Can I sue for libel,when statements made by someone I have never met put untrue and damaging comments on Yelp?

As noted by the others, you should utilize Yelp's procedures.

Is there a way to present an idea to company while eliminating their ability to just steal the idea?

If the idea is not patentable (and, if you have not already done so, you may want to check with a patent attorney to confirm that), then your best...