Is it legal to create a plugin that is similar in design to another's site?

Attorney Koslyn explains this well. You need to have your own counsel evaluate your system and compare it to the prior system to see what, if...

Patent infringement

You have gotten some good advice. You really need to retain IP counsel and discuss this with that counsel, in private.

Can I publish website links to PDF documents downloaded from my website, but which were produced by real estate brokers for free

If I understand correctly, you wish to download documents to your server and then provide access to your copy of such documents. This is very...

How to find an original legal document?

Issues such as font or form of creation (typewriter) are not really relevant. The key is whether or not this other person can demonstrate that he...

Can I play Youtube videos on a website without showing the video, and make money?

Just because a work includes a video component does not mean that non-visual aspects are exempt from protection. If you play a video so it can be...

Can a copyright owner that does NOT have an officially registered copyright STILL file for infringement, or not?

If registered, you may sue for damages. If not registered, you may register and sue for injunctive relief (cease and desist). As for damages if...

If I have developed a body spray that eases pain from burns, bites and stings; is this something that I need to have patented?

Attorney Natoli explains this very well. In your case, you can apply for a patent, which means revealing your product's secrets, or utilize "trade...

Are free knitting stitches copywritten ?

I believe that the copyright in this instance would apply to the pattern, not the clothing, but you need to run it my IP counsel to confirm that...

Copyright limits the right to copy. You are copying. Not good unless you have permission.

How does Piracy relate to copyright? And is it illegal to download pirated files?

Just because you have "always been told" something does not make it so. If you download something which is pirated, you are committing an illegal...