Would anyone ever "need" to obtain a copyrightor a patent for an unregistered trademark that is pending registration?

If your trademark is something like a car's hood ornament (the Rolls Royce Flying Lady) it might be suitable for a design patent, but the subject...

Is it ever necessary have a trademark copyrighted as well?

The artwork in your trademark might also be copyrightable. Words and short phrases generally not. Statutory damages and attorneys fees are easier...

Maybe, but sometimes a Terminal Disclaimer includes a common ownership term.

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Can I name my company based off a famous person’s nickname?

Retain a trademark lawyer. "Is there any way?" -- there is often a legal theory. If the modified name is identifiable in theory there could be a...

Yes. The method the work was reproduced makes no difference.

Is my complaint valid if it includes the businesses operational name but not the “registered” name?

Why not amend the complaint to identify the correct company?

It's life of the Author plus 70 for current works, but a little more complicated. The original Mona Lisa is in the public domain. But you're...

How can i use a movie poster or movies still photos in my blogg?

Unless it is a poster from the early days of movies it is likely copyrighted. If so, you can't reproduce it or publicly display it without...

Can i print android logo on merchandise for commercial use?

Check with Android. You can't just print a logo if you don't meet their standards.

Does it Violate any laws?

There is not enough information to provide guidance, even the general direction for which Avvo is intended. It would be best to retain a lawyer to...