Your understanding of trademark law is not correct. The crucial question is whether consumers will be confused by two different entities using the same or a si

Your understanding of trademark law is not correct. The crucial question is whether consumers will be confused by two different entities using the same or a similar trademark. One of the first things you learn about trademarks is that two companies can have the same trademark if they are in different industries and the consumer is unlikely to confuse the two companies. For example, there is both an airline and a faucet manufacturer called "Delta". There is both an electronics company and an agricultural seed company called "Pioneer". However, Lindows had to change their name to Linspire because it was clearly in the same industry as Microsoft and the consumer could easily confuse it with the trademarked Windows software. Similarly, the social networking site Teachbook eventually relented after being sued by Facebook and changed their name to TeachQuest. It definitely is not the case that this ruling grants the company Sky free trademarks on every word in the dictionary that contains those three letters.