 Budweiser Budvar Brewery and the American brewery Anheuser-Busch have been engaged in an ongoing trademark dispute over the name "Budweiser" since the start of the 20th century.In 1939, only one week before the German occupation of Czechoslovakia, Budweiser Budvar agreed to concede exclusive rights to the American brewery in the United States area.During World War II and the Cold War, Budweiser Budvar was unable to compete with then independent Anheuser-Busch.