How do I know that I’m not infringing somebody’s trademark when I’m registering a name?

.art domain registry policies are clear in that a domain name may not be registered or used to infringe another person’s trademark. It is the registrant’s responsibility to do the appropriate searches when registering or using a .art domain. Infringement generally occurs when a party registers another’s trademark and takes some action such as holding themself out to be in the business of the trademark holder or trying to sell the name to the trademark holder at an inflated price.