Valiant said:But it is a violation to say something is "compatable with" without permission, right? For instance, I can't start selling cleaning rags and write on the packaging "compatable with Pledge", not without permission of whomever controls that trademark.
When I go into a drug store (say, Boston or New York) every single generic medicine has "compare to Advil Extra Strength" or somesuch on the box. Every razor blade cartridge says "fits Gillette Mac III" or whatever on it, in smallish type. Looks pretty accepted to me.