Oracle vs. Google

I was reading that tech companies are lining up behind Google in the case that will soon be before the Supreme Court, which has to do with whether some APIs are copyrighted and therefore the property of Oracle.

API = application programming interface.

Anyway, if Oracle wins, I gather there's money in this game.

I want to copyright an API.
But first I have to write one, so...
I'll get right on that, by and by.