

NAL, but as it was explained to me by a lawyer: Part of a patent remaining valid is demonstrating that they put consistent effort into enforcing it. Nintendo not having filed suit against the other companies (if the games are indeed found to be violating the same patent) lays groundwork for invalidation. This is for example the reason Pepsico sued farmers in India for cultivating their patented potato - not because it would harm their business, but because it would harm the validity of their patent if they didn’t.
Yeah, and it sucks that plants can be patented. Monsanto in particular can go die in a fire.