That Blue Football Turf

When they're at home, the Boise State University Broncos play football on their famously blue turf. Whether you think it's quirky or cool, it's trademarked: U.S. Registration No. 3,707,623, approved five years ago (Nov. 9, 2009).

Diagram from Boise State's trademark registration for blue turf

To learn more, see Michelle Gallagher, Who Owns Blue? An Examination of the Functionality Doctrine in University Sports Color, 104 Trademark Rep. 765 (2014)