Why You Can’t Find Baltimore’s Beer at a Baltimore Orioles Game

The Baltimore Sun has an excellent story about the disappearance of National Bohemian Beer — commonly called Natty Boh — from Camden Yards, where the Baltimore Orioles play their home games.  Natty Boh was brewed in Baltimore by National Brewing Co. for many years, but it’s now brewed elsewhere by Pabst Brewing Co.  You can read the story here, but here’s a hint:  It’s all about trademark issues.