I remember tying that pattern over 15 years ago. It was a fly I had come up at my vice, and thought it was a new one. After showing it to some folks who had been fly fishing for many, many, more years than I, they told me they had tied that pattern over 20 years earlier. Not to take anything away from the fly or the tyer, but that is hardly a new pattern. (Although I'm not assuming the creator was claiming it is his own either). I think that it's pretty much impossible to truly invent a "brand new pattern" these days.