Can I copyright/trademark knitting patterns/logo designed by grandmother when copyright has expired? Slightly change patterns?

There is no way to revive the copyright registration for the previous works. You can certainly register new creative expression. Any creative...

I'm wondering what/if any permission I need to sell photographs I take of public places in my hometown?

This is not going to be a problem. Just imagine how many different trademarks and business entities appear in one panoramic photo of NYC's Times...

Articles of clothing copyrighted and prevented from being on an album cover?

It really depends on the context. In general, so long as there is some kind of social or political commentary it would be a fair use. Only if it...

Even though you may have some good legal defenses to use their trademark "HYDRO FLASK" descriptively in text under nominative fair use, their...

As noted, this is not going to be a problem. Just imaging how many different trademarks and business entities appear in one panoramic photo of...

What am I entitled to or should I do?

If you were in five episodes knowing that the filming was occurring of course then I am sure they can argue implied consent as a minimum. The fact...

As noted, there may be other regulatory issues involved, but what you describe should not violate any IP laws. Where you have to be concerned in...

Do I need to worry about copyright or plagiarizing if I use a female Watson? I know Elementary was the first to use one.

Copyright does not affix to mere ideas. Any creative expression will be covered by copyright law automatically. Then you register the work with the...

Can I sell an illustration design that interprets a song?

It is likely going to hinge on how close a connection your market makes to the underlying work you are referring to. Would this be considered a...

Generally, you are permitted to reformat copyright protected material for personal use such as taking cassette recordings and copying them into a...