Isn't that how patents work? You have to pay up no matter who implements it, as long as it is patented? (copyright, on the other hand, depends on whether your implementation is a derivative work of or copies etc. their implemenation).

Isn't that how patents work? You have to pay up no matter who implements it, as long as it is a patent? (copyright, on the other hand, depends on whether your implementation is a derivative work of or copies etc. their implemenation).