If the domains are in the standard TLDs and are obviously typosquatting, you can go after them using the UDRP. It's not cheap (low end is $1300), but you can go

If the domains are in the standard TLDs and are obviously typosquatting, you can go after them using the UDRP. It's not cheap (low end is $1300), but you can go after multiple domains at once if they're all owned by the same defendant.