U.S. federal trademark · Serial No. 88119598
"National Window Day" is the title of a national day observing the invention of the window, to be observed June 1 of each year. Commercial use will involve the trademark holder, Dale Briere, leasing the use of the phrase "National Window Day" to commercial entities that will subsequently use the phrase in their advertising in different media. Some possibilities of media include: (1) print (such as in flyers inside newspapers) and (2) "print" or electronic image on their websites
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.