Looney Tunes
Licensing and ownership

In 1933, Harman and Ising left, taking the rights to the Bosko characters with them. However, Warner Bros. retained the rights to the cartoons and the Looney Tunes and Merrie Melodies brand names, leaving their former producer Leon Schlesinger to start his own animation studio to continue the Looney Tunes series. With their retained Bosko rights, Harman and Ising began making cartoons at Metro-Goldwyn-Mayer in 1934 until they were fired in 1937 due to a lack of success. MGM proceeded to form their own studio to create its own cartoons. Time Warner eventually acquired the Bosko characters from Harman and Ising's estates. Meanwhile, the Schlesinger studio continued to make popular cartoons until 1944 when Schlesinger sold his studio to Warner Bros. Since then, Warner Bros. has owned all rights to all post-1933 characters created by Leon Schlesinger Productions and Warner Bros. Cartoons, even after the rights to individual cartoons were placed in other hands.

In 1955, Warner Bros. sold the television distribution rights to 191 of its cartoons (which included the black-and-white Looney Tunes and the black-and-white Merrie Melodies made after Harman and Ising left) to Guild Films. The copyrights to those cartoons were assigned to Sunset Productions, an entity owned by Warner Bros. The cartoons were distributed by Guild Films until it went bankrupt and was bought by Seven Arts. Seven Arts bought WB in 1967, and WB regained the TV distribution rights to the black and white cartoons.

In 1956, Associated Artists Productions (a.a.p.) acquired television distribution rights to most of Warner Bros.' pre-1950 library, including all Merrie Melodies (except for those sold to Guild and Lady, Play Your Mandolin!) and color Looney Tunes shorts that were released prior to August 1948, while Warner still owned the copyright to all of the cartoons. Unlike the previous TV package, this package had the Warner titles kept intact and an "Associated Artists Productions presents" title inserted at the head of each reel (as a result, each Merrie Melodies cartoon had the song " Merrily We Roll Along " playing twice). Two years later, United Artists bought a.a.p. (which had also bought Paramount's Popeye films) who merged the company into its television division, United Artists Television. In 1981, UA was sold to MGM, and five years later, Ted Turner acquired the pre-May 1986 MGM library, as well the rights to the a.a.p. library. In 1996, Turner's company, Turner Broadcasting System (whose Turner Entertainment division oversaw the film library), was purchased by Time Warner (now Warner Bros. Discovery), which was also Warner Bros.' corporate parent. Then when MGM/UA terminated its distribution deal with Time Warner in 1999, it surrendered its home video rights to the a.a.p. library to WB. Since then, Warner Home Video (now Warner Bros. Home Entertainment) has held the video rights to the entire Looney Tunes / Merrie Melodies animated output by virtue of Warner Bros.' ownership of Turner Entertainment.

Starting in 1960, the cartoons were repackaged into several different TV programs that remained popular for several decades before being purchased by Turner Broadcasting System. Turner's Cartoon Network reran the cartoons from its launch in 1992 until 2004, again from 2009 until 2017, and making a temporary return in April 2023 to celebrate WB's 100th anniversary. The Looney Tunes Show (not to be confused with the 2010s animated series of the same name), an early 2000s anthology produced by Warner Bros. Animation for the network, was broadcast from 2001 to 2004. The show featured shorts from the original Looney Tunes and Merrie Melodies theatrical series. As of 2021, classic cartoons continue to air on CN's sister channel, Boomerang and MeTV. Differing curated collections of Looney Tunes and Merrie Melodies are available for streaming on both the Boomerang streaming service and HBO Max.

Five dozen Looney Tunes and Merrie Melodies shorts from before December 1943 have lapsed into the public domain and are thus freely distributed through various unofficial releases.
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