<Li> The creation of an administration board to enforce these requirements . </Li> <P> The studios did not fully implement the consent decree, and in 1942 with Allied Theatre Owners proposed an alternate "Unity Plan". They proposed booking larger blocks of theatres with the caveat of allowing theaters to reject films . This led to the formation of the Society of Independent Motion Picture Producers (SIMPP), which also filed a lawsuit against Paramount Detroit Theaters, the first major lawsuit of producers against exhibitors . The government declined the Unity proposal and reinstated the 1943 lawsuit . The case went to trial on October 8, 1945, one month and six days after the end of World War II . The case was decided in favor of the studios, and the government immediately appealed . </P> <P> The case reached the U.S. Supreme Court in 1948; their verdict went against the movie studios, forcing all of them to divest themselves of their movie theater chains . This, coupled with the advent of television and the attendant drop in movie ticket sales, brought about a severe slump in the movie business, a slump that would not be reversed until 1972, with the release of The Godfather, the first modern blockbuster . </P> <P> The Paramount decision is a bedrock of corporate antitrust law, and as such is cited in most cases where issues of vertical integration play a prominent role in restricting fair trade . </P>

What year did the supreme court rule that the studios had to sell their studios