Super Bowl 2018 was in many ways no different than National Football League championship games of previous years. As always, one of the most anticipated aspects of the game were the commercials. Filled with humor, social statements, celebrities and avocados, the commercials generally proved to be as entertaining as they were expensive.And behind the scenes, the National Football League was as zealous as ever about protecting its intellectual property from those who would attempt an end-run around the league’s …