I want to make a music video parody. If I state nonprofit intent and that I don't own the music, could I still get in trouble?

You will be using a recognized cadence which, if without permission/license, will be infringement, For Parody analysis see IP Counsel.

Can I file suit for breach of contract and/or DMCA violations?

Try Google to see if their takedown process is operational. Then see business or IP counsel for breach of contract analysis.

Do I own the copyrights to audio comments left on my website?

If the terms of the site establish copyright ownership then the user and owner should expect that the copyright ownership is given to the the site....

Is it possible to use someones artwork on a product for either profit or non profit if the trademark is expired?

You can't use property of another without permission unless the right has expired, term of copyright is life of the author plus 70 years. Finding...

Copyright infringement is performing any of the property rights belonging to the owner of the Copyright Property. Purchasing from an infringer is...

Hired an artist to create packaging for an audio CD. No Contract. He now wants to charge me for each use. Can I fight this?

Yes, you should be represented. While there is no written agreement you had substantial involvement and hence there may be an implied agreement. ...

The Asker and, hopefully, the Asker's attorney will have the process set out in DCMA. Have the attorney determine what the options are.

How do I file a copyright infringement complaint against another organization?

Copyright infringement occurs when someone copies your copyright property. Trademark infringement occurs when someone uses a mark similar in sight...

I am purchasing material from a already licensed dealer to make purses with the team logos all over the material. I want to sell

What is the agreement held by the 'already licensed dealer to make purses"? If you don't tack onto that license then you need licenses from each...

Can the originator own the name of an untrademarked, defunct Facebook page with no business/service/original content attached?

A Trademark is a Word, Symbol or Device that identifies the source of goods or services to a consumer thereby reducing consumer confusion as to the...