Suggestions: Milkboned. Murkury. Quicksliver. Ielement. Quarker. .....plays on words that probably haven't been used yet.

That argument actually won't hold under trademark law. The law is there to prevent confusion - names that are too similar are prohibited as well. You can't put a cola on the market and call it "Koka Kola" for instance, that's just too close to the brand name of that lovely black sugar water.

Abigail