Heisman Trophy winner Johnny Manziel's attorneys have filed a lawsuit claiming that T-shirt maker Eric Vaughan infringed on Manziel's trademark rights by using of his nickname, "Johnny Football" on T-shirts. The shirts that were sold had the slogan "Keep Calm and Johnny Football".

Darren Rovell of ESPN tweeted:

Manziel became famous as "Johnny Football" during the last football season while on the way to winning the Heisman and he could be collecting on that name. It looks like the because the NCAA will allow him to collect money should he win.

Although Manziel didn't file with the U.S. Patent and Trademark Office until Feb. 2 of this year, it doesn't have to be officially registered for there to be an ownership claim.

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