Are we in legal jeopardy for using this software?

First, who possesses the other 20% ownership of the code? If you do, then this changes the outcome or at least presumably. Next, you allude to...

"Fan art" is really just another way of saying moderately tolerated copyright infringement. What you describe is still an infringement even if you...

Can I have another persons personal name as a .com

You received some very good responses. A better "what if" in response to your question is what if this person has his lawyer sue you EVEN IF we...

Can I start a company that allows users to rent their books (textbooks, literature,etc) to other users?

This should not be a problem provided that the product is covered under the First Sale Doctrine. Anything that is governed under an End User...

Can I take pictures of the side of a six pack of beer or other advertisement and print that out on 25x36 canvas and sell that

There is no straight forward response for this. Under a copyright analysis this could be seen as creating derivative works and thus infringing. If...

How do I obtain a license to adapt a film to a script/score for the stage?

There is little doubt that these works are not in the public domain and you may need more than just one license to cover for all the layers of...

You simply can't receive any trademark clearance advice over a free and quite public Q&A platform. Assuming you have no federal registration...

Copyright issue

There could be more than one way to approach this. There is the copyright angle as well as perhaps a trade dress issue. Any creative expression...

That should not be a problem. The key issue with trademark cases is when there is some market confusion as to the source of the good or service....

How do we stop people from stealing our magazine and reselling the PDF file on their website as a download for a fee?

Using the DMCA take down process is a good start. If the website and ISP are not in the US jurisdiction or in a country that respects US IP rights...