Terms of the deal were not disclosed and it was not immediately clear why the two companies, whose parent companies have sparred in court for years, decided to put their differences aside for this licensing agreement. Viacom is currently seeking to overturn its defeat in a landmark $1 billion lawsuit in which the media conglomerate charged YouTube and parent company Google Inc with "massive" copyright infringement. Viacom alleged in its 2007 suit that many of its programs, including "The Daily Show with Jon Stewart," "South Park," and "SpongeBob SquarePants," have been illegally uploaded on YouTube and that YouTube and Google executives knew about it but did nothing to stop it. The case has been closely-watched as a test of the Digital Millennium Copyright Act, a 1998 federal law making it a crime to produce technology to circumvent anti-piracy measures, and limiting liability of online service providers for copyright infringement by users.