Thank you, yes I am wondering how a trademark can be challenged other than in the first 12 weeks. I've been making merchandise for defunct teams and being very careful about the logos I used. I applied for licensing with a league and they said they were not interested in working with me. Afterwards, they started making their own merchandise using the logo on my best selling product and said they would sue me if I did not stop using the logo. I spoke to a lawyer about registering it as a trademark since I was using it first and was told it was an ornamental design. Then the league applied for the trademark and was denied, stating it is an ornamental design because the team does not exist. With that reasoning, I believe it should apply for most defunct teams (other than major teams like you mentioned). For example, the NBA holds trademarks to ABA teams and will make a t-shirt once every 10 years or so and submit it as a specimen to renew the registration. Minor League Baseball has taken it to another level where they are taking screenshots of random eBay listings of old merchandise to renew registration. I don't believe the leagues should be able to hold these trademarks, so I am wondering how it can be disputed.