In a complaint filed in Kansas City, Missouri, federal court, however, H&R Block accused the company of "stealing Block's name in order to co-opt the reputation and goodwill that Block has earned through decades of hard work." Block did not immediately respond to a request for comment. H&R Block said consumers were likely to be confused by the similar name, noting that it has referred to itself simply as "Block" in some advertisements since 2015.

https://www.reuters.com/business/hr-block-sues-block-formerly-square-over-new-name-2021-12-16/