There is, of course, a long thread on copyright issues elsewhere (by Medievalist, I believe).
But that's irrelevant to the issue of using brand names in stories. You can do that to your heart's content--though you may get a letter from Coca-Cola
® or Kleenex
® suggesting that you need to put a registered trademark dingus by the name.
Mind you, they don't really care if you put "
®" there or not. But their lawyers need to write the letter to show that they are definding their trademark. If you don't show evidence that you have defended the trademark, you can lose it. This happened to a product called Aspirin; the trademark was defended against infringement.
But you can refer to the products as much as you like, and you need not present them in a positive light, either. Check out the novel
American Psychopath: Easton-Ellis probably has more brand names in the book than verbs. And these products are being used, and praised, by a sociopathic murderer.
You have a great deal of latitude in free speech in the US, and speech in art is even more protected. If you suggest with a straight face in a nonfiction book that Coke
® causes autism, you may have a problem; but suggest in a novel that Coke
® turns children into giant leeches and you are probably safe (not only is it clearly labeled "fiction," but it is arguably being used in a satirical fashion, and is anyway an unbelievable claim).
Check out the book
Mondo Barbie (a pretty funny book, by the way). Barbie is a trademark of Mattel--but the writers of the stories in the collection do things with Barbie that Mattel probably dislikes. [/FONT]
Mattel is somewhat litigious--they have gone after a few websites, and after the song "Barbie Girl" by the band Aqua. The latter case went to the Supreme Court, and Mattel lost.
Last time I checked, Mattel still has a suit pending against ChinaBarbie.com, which was a porn site using the Barbie image and name in a way Mattel disliked. Mattel may have decided that, given the general attitudes of the Bush Administration on freedom of speech and on pornography, that the time was ripe to try again.
But insofar as I know, even Mattel hasn't been audacious enough to attack the use of Barbie in print media.
There is nothing you can do to assure you will never be sued for something you write in a novel. You can be sued for almost anything you say. I'm sure I could find grounds for suing you (probably unsuccessfully) for calling yourself "Goatpiper."
But I'd have no hesitation about writing, as Maryn said, "
Bobby looked at his Star Wars sheets, faded and pilling after only three launderings."[/SIZE]