Remember Ridge Racer's amazing Galaga mini-game on PS1? Bandai Namco patented the concept of mini-games in loading screens, but video game lawyer David Hoppe noticed Bandai Namco's patent is about to expire. The patent was filed November 27, 1995, which means developers can build their own on November 27, 2015.
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Hoppe shouldn't have told anybody until the patent did expire, because I can totally see Namco Bandai deciding to re-apply for the patent just to be dicks now that this is getting press.