Every once in a while, an investment model comes along that turns the innovation community on its head. The venture capital industry, still less than 50 years old, is one example. Now an emerging paradigm called royalty-based financing, applied to early-stage startups, may be another. The approach has its roots in the Boston area, and is starting to generate some serious buzz in the Northwest. If you’re a VC, angel investor, or entrepreneur, it definitely needs to be on your radar.