how do I register a tomato name

[casino]

Hi Everyone, I need some help. Does anyone know how to register a new tomato name. I grow over 50 heirloom tomatoes in my garden and I have developed 3 tomatoes that I think are outstanding, everyone loves them. I picked out the names for these tomatoes but now I would like to register those names or have these names put on a list somewhere stating that I am the owner of these tomatoes and these names are registered to me. I have done an exhaustive google search on "how to register a tomato name" but somehow I am not finding what I am looking for. Any suggestions.