Why Is Caterpillar Inc Suing Cat & Cloud

"Cat & Cloud" already have the trademark, and they are always using it in conjunction with the word "cloud." Meanwhile, Caterpillar Inc, the maker of heavy machinery making over 54 billion dollars in revenue last year, is still suing this coffee shop in in an attempt to reverse their trademark around the word "Cat". Why?

As it's indicated by the podcast hosts, Caterpillar is doing this to a number of small businesses because they have a trademark for the work "Cat" as an abbreviation to the word "Caterpillar."