"In the United States, it is not registration, but actual use of a designation a...

"In the United States, it is not registration, but actual use of a designation as a mark that creates rights and priority over others. Thus, the rule is that ownership of a mark goes to the first-to-use, not the first-to-file."

https://www.legalteamusa.net/trademark-law-first-to-use-v-fi...