Yeah, Karl, china does that copy/rip-off thing all the time. It's called stealing intellectual property.
I bought a new jacket and helmet this year.
The shield is one of those schmancy chromatic ones. I've only used it a couple of times because it been too cold to ride. Global warming seems to be going backwards here. But the shield works great, so far. You are asking for trouble riding with your shield open, around here, for long.
Maybe I've been lucky, and I do notice the wind at freeway speeds, but it really does help keep the face cool. There really isn't much of my face that isn't covered. You got the glasses and the cover, so it's just the nose and I'm thinking of a way to cover that.
My shield is really crappy. I tried to clean it as soon as I got it and plastic polish was removing some coating.
I've never seen a helmet that had great air flow, I drilled out my old one and that more than doubled the air flow, yet it was still an oven in there with the lid closed.
As far as stealing IP, it's really an issue of what is protected and what isn't. IDK what on a helmet would be protected with a patent. It would have to be new, I don't think any of the built in shades have a patent, but I guess they could.
Even the patent runs out after a while.
My whole point here is that you can buy any product and copy any part that's not protected. It's done all the time, in fact, if any business doesn't know their competitors products inside/out, they are fools.
They make special software tools just for doing this for apps, I know, I'm an app dev, have been for many years. Competitive companies always know the products that are on the market.
You can take any helmet and have it cloned in China, China's actually very good at it.