Mitgang was one of the original named plaintiffs in "Authors Guild vs. Google" (2005), the purpose of which was to prevent Google from providing a complete searchable index of extant literature.
Mitgang a fost unul dintre principalii reclamanți în cazul "Authors Guild vs. Google" (2005), al cărui scop era de a preveni compania Google să furnizeze un index de căutare complet al literaturii existente.