According to a story by the New York Times, professional athletes are increasingly looking to trademark law to protect words, phrases, and symbols associated with themselves. From the article:
“[Darrelle] Revis is among a number of athletes who are seeking federal trademark protection for their names, nicknames and even their catchphrases. The slogans come in all varieties: trash-talking (“Stomp You Out,” claimed by the former Giants defensive end Michael Strahan); self-aggrandizing (“I Love Me Some Me,” registered by Bengals wide receiver Terrell Owens); self-deprecating (“Manny Being Manny,” claimed, and later abandoned, by the baseball slugger Manny Ramirez); and just plain weird (“Got Strange?” registered by Vikings defensive end Jared Allen).”
This is great news. Now you can be sure that your officially licensed Terrell Owens t-shirt will perform at the level you expect from the brand — i.e., for only 6 weeks of the season.