redis-rs has been around since 2013, so before redis inc. was called anything related to redis (the were called Garantia data) or they hired the redis creator (in 2015) or bought the redis trademark (in 2018).

That might not be legally relevant but it is certainly ethically relevant.

> That might not be legally relevant but it is certainly ethically relevant.

I don't know if it's ethically relevant. I'm sure there was someone named Matt Damon before the actor Matt Damon, and maybe that guy was even an actor, but I wouldn't say today's Matt Damon is ethically violating ancient history's Matt Damon.

What is the right rule for abandonware? It can't be, whoever got there first. Anyway. I don't buy your timeline. Redis-rs comes after the name Redis, certainly, which these guys now own. It doesn't matter when these two events you picked out of a hat occurred.