The Washington Redskins registered their trademark with the U.S. Patent Office in 1967. From all accounts, there were no complaints. That same office, acting arbitrarily, capriciously and unreasonably, revoked the trademark this week, bowing to continuing pressure from groups opposed to the name as a "racial slur" ("Washington's offensive line," June 20). Oklahoma, which got it's name from the Choctaw Indians, means, "red people"! Should the state be forced to change it's name, also? Hundreds of Native American schools throughout the country proudly use the nickname "Redskins." Should they be forced to change their nicknames, too?