Only if your contract specifically states that the artist will check your logo against registered trademarks for potential infringement. Usually that requires two people, an IP lawyer and a logo designer.
You're technically correct, but for a simple logo designed by an artist doesn't usually need an IP lawyer as long as the concept is unique enough. It's not going to be an issue nearly as much as if the logo was sourced from an icon aggregator site that completely disavowed any copyright claims.