The United Paramount Network (UPN) was an American broadcast television network that launched on January 16, 1995. It was originally owned by Chris-Craft Industries' subsidiary, United Television. Viacom (through its Paramount Television unit, which produced most of the network's series) turned it into a joint venture in 1996 after acquiring a 50% stake in the network, and subsequently purchased Chris-Craft's remaining stake in 2000. On December 31, 2005, UPN was kept by CBS Corporation, which was the new name for Viacom when it split into two separate companies. CBS Corporation and Time Warner (now Paramount Global and Warner Bros. Discovery, respectively) jointly announced on January 24, 2006, that the companies would shut down UPN and competitor The WB to launch a new joint venture network later that year. UPN ceased broadcasting on September 15, 2006, with The WB following two days later. Select programs from both networks moved to the new network, The CW (now controlled by Nexstar Media Group and partially owned by Paramount and WBD) when it launched on September 18, 2006. History 1948–1993: Origins of the network Paramount Pictures had played a pivotal role in the development of network television. It was a partner in the DuMont Television Network, and the Paramount Theaters chain, which was spun off from the corporate/studio parent, merged with ABC in a deal that helped cement that network's status as a major network. The Paramount Television Network was launched in 1948, but dissolved in the 1950s. In the wake of the successful Universal Studios ad hoc syndication package Operation Prime Time, which first featured a miniseries adaptation of John Jakes' novel The Bastard and went on to air several more productions, Paramount had earlier contemplated its own television network with the Paramount Television Service. Set to launch in early 1978, it would have run its programming for only one night a week. Thirty "Movies of the Week" would have followed Star Trek: Phase II on Saturday nights. Plans for the new network were scrapped when sufficient advertising slots could not be sold, though Paramount would contribute some programs to Operation Prime Time, such as the mini-series A Woman Called Golda, and the weekly pop music program, Solid Gold. Star Trek: Phase II was reworked as the theatrical film, Star Trek: The Motion Picture, absorbing the costs already incurred from the aborted television series. Paramount, and its eventual parent Viacom (which bought the