Using the term “World Series” in promotions or marketing for the MLB’s championship event requires caution due to its trademarked status, according to broadcast attorney Mitchell Stabbe, Partner at Wilkinson Barker Knauer LLP, writing on the Broadcast Law Blog. Major League Baseball (MLB) holds all registrations for World Series-related marks in baseball tournaments and merchandise. While MLB licenses the phrase for tournaments like the College World Series, its protection extends primarily to baseball-related goods and services. Some non-baseball competitions, like World Series of Poker, include disclaimers to avoid infringement. Broadcasters and media companies planning ads or promotions involving MLB trademarks are advised to consult a trademark attorney well-versed in these matters to ensure compliance.