Obx-stock created obx as an abbreviation for the outer banks of north carolina. obx-stock used obx on oval stickers for cars and applied obx to souvenirs sold in the outer banks. the company obtained trademark registration for obx for a range of goods. in practice, obx was widely used by many businesses that advertise their outer banks location. bicast began to sell stickers printed with "ob xtreme." obx-stock sued bicast for trademark infringement. the district court held for bicast, finding that obx was either a generic mark or a descriptive mark without secondary meaning and so was not valid. obx-stock appealed. what would support obx-stock's position?