Can i print song titles or lyrics on my tshirts for sale to the public?

There are too many variables to answer here. Hire an intellectual property lawyer. You have both possible trademark and possible copyright...

Can I play music from YouTube in the background of live streams on Twitch or other services?

I think your assumption that anything on Youtube puts things in the clear is flawed. and it doesn't sound like you are commenting or criticizing...

Sound Recording Infringement case?

Statutory damages are available if (1) you have a registration and (2) there is an infringement such as by copying, broadcasting, performing or...

What can I do if the people who hired me to finish their logo refuse to pay me because they didn't like my price?

Obviously you should have had a contract first. If you had, what would have been the price? If you register copyright you will need to identify...

Can I use an abbreviation of a city’s name instead the name?

In theory, you should be able to use geographical information in a public database. However, professional sports leagues often push the limits of...

The above answer is a good one. What you showed publicly is prior art for you, but you have a year to file a US application from your public...

To finalize your trademark, do you have to make a sale?

The above answer is a good one. You need to have "use in commerce". Using a trademark means the mark is closely connected to the goods at the...

What is the easiest and cheapest way to change a nickname to a legal name on a power of attorney and a will?

I don't see any intellectual property issues, I'll change it to a different subject. It will be state-specific, but it may be that you can just...

If you are packaging and selling salsa, you need to check the FDA for ingredient labeling requirements. As a general rule, they want common names,...

How do I protect my idea for a tv show then promote it?

You can register copyright in your script. Copyright does not protect ideas, only particular expressions. After you write the script you can...