Edit: To your first point, Automattic, who originally registered the trademark, apparently has a license from the trademark owner (the Foundation) to use the mark (at least for that domain). https://wordpress.org/book/2015/11/the-wordpress-foundation/ WP Engine, by their own admission, does not have a license. It also seems odd to call Matt perverse in what seems to be a trademark dispute without any acknowledgment that he is the inventor of the software, as such the founder of the community, that his friend Christine Tremoulet coined the name, and that his company originally registered the trademark.