> Probably something up to 50$.

$50 might get you 5 minutes of an attorneys time. For someone to fight this in court will in the hundreds of hours of billable time. None of these open source client library maintainers is likely going to be able to fund that.

> Redis lab is not that big as a company so they might not be able to hire top notch lawyers.

Redis is a company with a billion dollar valuation that has raised hundreds of millions of dollars, they can afford good lawyers.

Prior art for redis_py clearly belongs to Redis, regardless of when the trademark is actually filed. This is because Redis had to have existed before redis_py.