Who would you sue? The courts?
In the US, I think it would be covered by this: https://www.law.cornell.edu/rules/frcp/rule_24
So presumably the analogue to that in Spain.
alt Hacker News
In the US, I think it would be covered by this: https://www.law.cornell.edu/rules/frcp/rule_24
So presumably the analogue to that in Spain.