Dunder Mifflin
Two websites were created to support the fictional company, one with the image of a public website, and one meant to look like the corporation's intranet. NBC sold branded merchandise at its NBC Universal Store website. Its logo was prominently displayed in several locations in downtown Scranton, Pennsylvania, where the show is set. Scranton has been associated internationally with Dunder Mifflin due to the show's international reach. In a 2008 St. Patrick's Day speech in the suburb of Dickson City, then-Taoiseach (prime minister) of Ireland, Bertie Ahern, referred to the city's fictional branch office.
The name is also at the center of a trademark infringement lawsuit filed by NBCUniversal against Jay Kennette Media Group; when NBC tried to obtain a trademark for the name in 2020, they were denied because Jay Kennette had already registered the trademark in 2017, and was selling merchandise well before NBC. Provided by Wikipedia