I think you mean trademark infringement. If your mark is confusingly similar to another operating in the same or related classes of goods or...

Can someone use my business name to start own business of the same kind even though I haven't trademarked my business?

You received good responses. I would get some solid advice before taking any action of course. There may be more than one way to approach this...

Does a word being trademarked disqualified it from use in a phrase?

The answer to your general question is of course not. There are hundreds of marks that use the term "Apple" within them despite the famous Apple...

It would ultimately depend on the context of that use. If you are thinking about trademark protection the following might be helpful. Before...

Best trademark class for a "slogan"? for retail store that will sell food, wine, furniture, clothing, jewelry i.e. "just do it"

You really need to get some actual advice before jumping in here. In general, retail of other's brands falls under IC 035 (business services). But...

Trade name infringement?

It all depends. If the real names are any where near as generic as your examples suggest this might be a problem and I would encourage...

Can I still use a title for my book even though someone has the exact title for a blog post of theirs?

Yes, you are free to title your book anything you want. Titles to single creative works like books or movies cannot be afforded any trademark...

Can I use copyrighted images, to accompany my site for profit, and still have it considered fair use?

Even if you are discussing a particular movie or book you cannot just use any content you find to help illustrate your discussion. You could for...

The principal concern here is with violating the right of privacy and publicity of those depicted in the items you sell, which are state governed...

Is it legal to upload a video (no audio) of a mechanic test driving my truck.? Does blurring the face make it legal?

The context matters here. If the mechanic had permission to be in the vehicle then I suppose it could be argued that he had an expectation of...