They trademarked our interlocking UT. It had been ours for decades, but Tennessee didn’t think to get a registered trademark for our symbol.
The lawsuit went all the way to SCOTUS. Final ruling UT East of the Mississippi is Tennessee and West of the Mississippi is texas.

Tennessee then dropped the UT as our symbol and the Power T is a registered trademark.
I absolutely hate texas for that. It happened when I was a student at Tennessee. We had the UT symbol on a wall in our fraternity house before the lawsuit. We opted to paint over it rather than pay texas to display it. The University was going to make us pay. We had a lottery pick to determine who had to paint over our UT. Guess who’s name was drawn out of the hat?

I hate painting and have absolutely hated texas ever since then.