I could use a little assistance!

[Hirulin]

Hi all! This is a question concerning copyright! I have recently started Engraving glasses as a way to earn a little extra pin money. I've looked online and can find practically NO-WHERE that engraves Elvish onto things!!! As I'm a fluent writer in the tengwar, I was wondering if I'd be able to sell Glasses which had the Elven Script engraved on then without getting into any trouble with the Tolkien Estate (We all know what they're like regarding the proff's works!) I wouldn't have thought that there would be a problem so long as I didn't engrave anything that was quoted in the books/movies (I was planning on doing names, simple messages etc!) Would the Tengwar be copyrighted do you think? I assumed not considering you can download the fonts and suchlike!!

Any advice would be welcomed!

Thank you in anticipation!

Namarie