Trademark application

On the main Jitsi page I see a little tiny “TM” next to the Jitsi logo. It makes me think that you folks want to protect the name and logo as a trademark. But I don’t see that any trademark application has been filed at the US Patent and Trademark Office. As a happy provider of a server https://jitsi.oppedahl.com:8443/ I wonder if I could show my gratitude to the project by doing a free-of-charge trademark application for the project? But I do not know to whom I would get in touch. Maybe someone can let me know.