I remember when IBM was upset that various companies were calling their 80286 computers "<Brandname> AT" like the IBM AT ("advanced technology"). But you can't trademark a preposition!
It's not that simple -- you can definitely trademark a preposition. Go search USPTO, it's not hard to find some: https://tmsearch.uspto.gov/search/search-results/90234636
It's not that simple -- you can definitely trademark a preposition. Go search USPTO, it's not hard to find some: https://tmsearch.uspto.gov/search/search-results/90234636