Simpson's Duff Beer Facts and History: Can a brewer be prevented from using the name "Duff Beer" on the labelling of its beer cans? Yes, Duff Beer belongs to the Simpson's. TV's Homer Simpson can't get enough of it ... and now his favourite beer, Duff, has become a real-life collectors' item, being offered for sale for up to $10,000 a case. Duff Beer was banned from sale in 1996 after the makers of The Simpsons complained the name was stolen from their cartoon series, a beer called Duff has reappeared for sale via classified advertisements. People who bought a case of beer for about $24 in 1995 are now asking up to $10,000 for the same 24 cans. A Federal Court judge in 1996 ruled that the South Australian Brewing Company had illegally tried to "exploit a strong association" with The Simpsons by making and selling Duff Beer. The case went to court after Twentieth Century Fox Film Corp, the series' parent company, complained. Homer Simpson began chugging a fictional brew by the name of Duff Beer in 1990 when the phenomenally popular show began.