What can i do?

Without knowing more, I suggest that you consult with an IP lawyer in private and discuss your objectives in more detail. You can start by calling...

The DBA is required when you are operating under a different name. Merely omitting the PLLC from a sign is not going to trigger a requirement for...

Will getting three domains (.com, .net, .org) together with my made up word nullify any attempts by others to use the word?

No. Before you invest in any trademark make sure you get some legal guidance upfront. It is of course best practice to clear it before you start...

I have a registered trademark for "Lantern Legal Services." Just because I might place that mark on hats, shirts and pens as promotional items does...

When you buy branded materials like fabric you do so for personal use not for all commercial activity. You are free to make whatever you want for...

How can I protect my intellectual property?

As noted, your ideas and concepts are not protectable. This is not to say that you cannot protect what you have, but we would have to analyze that...

You can, this is referred to as "bundling" and is quite common in things like kits and gift baskets. You just have to make sure you are not...

You really need to get a proper evaluation of what you intend to offer here. That said, using quotes will generally be permitted. This is...

It is very unclear from your post what exactly is happening here. I suggest that you consult with a lawyer in private and discuss your...

Could familiar objects (ie: puzzle pieces) used to practise concepts in student workbooks become a copyright issue?

Any creative expression will be covered by copyright law automatically. Then you register the work with the US Copyright Office so to perfect your...