What do you mean?
I understand that some people associate "THE" with OSU. That's great, really. That does not mean they should be granted a trademark on the most common word in the English language across an entire category of clothing (or, for anything).
Capitalized or not, whether you like football or not, and whether you think it's reasonably associated with OSU or not is immaterial. They were granted a trademark on the most common word in the English language, and that's dumb.
OSU ? Never heard about it. But this happened in the same country which trademarked Windows
Trademarks are usually restricted to tiny, tiny slices of the complete, generic meaning of the trademarked term.
Exactly how many sports clothing items were being sold with only the word "THE" (all caps) on them?
Davis would later go on to play for The Washington Football Team.